diff --git a/ionic/components/app/test/sink/firebase-debug.js b/ionic/components/app/test/sink/firebase-debug.js
deleted file mode 100644
index f3b7c8dde5..0000000000
--- a/ionic/components/app/test/sink/firebase-debug.js
+++ /dev/null
@@ -1,13050 +0,0 @@
-/*! @license Firebase v2.2.4
-    License: https://www.firebase.com/terms/terms-of-service.html */
-var CLOSURE_NO_DEPS = true;
-var COMPILED = false;
-var goog = goog || {};
-goog.global = this;
-goog.global.CLOSURE_UNCOMPILED_DEFINES;
-goog.global.CLOSURE_DEFINES;
-goog.isDef = function(val) {
-  return val !== void 0;
-};
-goog.exportPath_ = function(name, opt_object, opt_objectToExportTo) {
-  var parts = name.split(".");
-  var cur = opt_objectToExportTo || goog.global;
-  if (!(parts[0] in cur) && cur.execScript) {
-    cur.execScript("var " + parts[0]);
-  }
-  for (var part;parts.length && (part = parts.shift());) {
-    if (!parts.length && goog.isDef(opt_object)) {
-      cur[part] = opt_object;
-    } else {
-      if (cur[part]) {
-        cur = cur[part];
-      } else {
-        cur = cur[part] = {};
-      }
-    }
-  }
-};
-goog.define = function(name, defaultValue) {
-  var value = defaultValue;
-  if (!COMPILED) {
-    if (goog.global.CLOSURE_UNCOMPILED_DEFINES && Object.prototype.hasOwnProperty.call(goog.global.CLOSURE_UNCOMPILED_DEFINES, name)) {
-      value = goog.global.CLOSURE_UNCOMPILED_DEFINES[name];
-    } else {
-      if (goog.global.CLOSURE_DEFINES && Object.prototype.hasOwnProperty.call(goog.global.CLOSURE_DEFINES, name)) {
-        value = goog.global.CLOSURE_DEFINES[name];
-      }
-    }
-  }
-  goog.exportPath_(name, value);
-};
-goog.define("goog.DEBUG", true);
-goog.define("goog.LOCALE", "en");
-goog.define("goog.TRUSTED_SITE", true);
-goog.define("goog.STRICT_MODE_COMPATIBLE", false);
-goog.define("goog.DISALLOW_TEST_ONLY_CODE", COMPILED && !goog.DEBUG);
-goog.provide = function(name) {
-  if (!COMPILED) {
-    if (goog.isProvided_(name)) {
-      throw Error('Namespace "' + name + '" already declared.');
-    }
-  }
-  goog.constructNamespace_(name);
-};
-goog.constructNamespace_ = function(name, opt_obj) {
-  if (!COMPILED) {
-    delete goog.implicitNamespaces_[name];
-    var namespace = name;
-    while (namespace = namespace.substring(0, namespace.lastIndexOf("."))) {
-      if (goog.getObjectByName(namespace)) {
-        break;
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-      goog.implicitNamespaces_[namespace] = true;
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-  if (goog.moduleLoaderState_.moduleName) {
-    throw Error("goog.module may only be called once per module.");
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-  goog.moduleLoaderState_.moduleName = name;
-  if (!COMPILED) {
-    if (goog.isProvided_(name)) {
-      throw Error('Namespace "' + name + '" already declared.');
-    }
-    delete goog.implicitNamespaces_[name];
-  }
-};
-goog.module.get = function(name) {
-  return goog.module.getInternal_(name);
-};
-goog.module.getInternal_ = function(name) {
-  if (!COMPILED) {
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-      return name in goog.loadedModules_ ? goog.loadedModules_[name] : goog.getObjectByName(name);
-    } else {
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-};
-goog.moduleLoaderState_ = null;
-goog.isInModuleLoader_ = function() {
-  return goog.moduleLoaderState_ != null;
-};
-goog.module.declareTestMethods = function() {
-  if (!goog.isInModuleLoader_()) {
-    throw new Error("goog.module.declareTestMethods must be called from " + "within a goog.module");
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-  goog.moduleLoaderState_.declareTestMethods = true;
-};
-goog.module.declareLegacyNamespace = function() {
-  if (!COMPILED && !goog.isInModuleLoader_()) {
-    throw new Error("goog.module.declareLegacyNamespace must be called from " + "within a goog.module");
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-  if (!COMPILED && !goog.moduleLoaderState_.moduleName) {
-    throw Error("goog.module must be called prior to " + "goog.module.declareLegacyNamespace.");
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-  goog.moduleLoaderState_.declareLegacyNamespace = true;
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-goog.setTestOnly = function(opt_message) {
-  if (goog.DISALLOW_TEST_ONLY_CODE) {
-    opt_message = opt_message || "";
-    throw Error("Importing test-only code into non-debug environment" + (opt_message ? ": " + opt_message : "."));
-  }
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-goog.forwardDeclare = function(name) {
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-  };
-  goog.implicitNamespaces_ = {"goog.module":true};
-}
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-      cur = cur[part];
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-      return null;
-    }
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-  return cur;
-};
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-    global[x] = obj[x];
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-    var provide, require;
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-      deps.pathIsModule[path] = !!opt_isModule;
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-    for (var j = 0;require = requires[j];j++) {
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-        deps.requires[path] = {};
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-      deps.requires[path][require] = true;
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-};
-goog.define("goog.ENABLE_DEBUG_LOADER", true);
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-    goog.global.console["error"](msg);
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-};
-goog.require = function(name) {
-  if (!COMPILED) {
-    if (goog.ENABLE_DEBUG_LOADER && goog.IS_OLD_IE_) {
-      goog.maybeProcessDeferredDep_(name);
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-        return goog.module.getInternal_(name);
-      } else {
-        return null;
-      }
-    }
-    if (goog.ENABLE_DEBUG_LOADER) {
-      var path = goog.getPathFromDeps_(name);
-      if (path) {
-        goog.included_[path] = true;
-        goog.writeScripts_();
-        return null;
-      }
-    }
-    var errorMessage = "goog.require could not find: " + name;
-    goog.logToConsole_(errorMessage);
-    throw Error(errorMessage);
-  }
-};
-goog.basePath = "";
-goog.global.CLOSURE_BASE_PATH;
-goog.global.CLOSURE_NO_DEPS;
-goog.global.CLOSURE_IMPORT_SCRIPT;
-goog.nullFunction = function() {
-};
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-  return opt_returnValue;
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-goog.abstractMethod = function() {
-  throw Error("unimplemented abstract method");
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-    if (goog.DEBUG) {
-      goog.instantiatedSingletons_[goog.instantiatedSingletons_.length] = ctor;
-    }
-    return ctor.instance_ = new ctor;
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-};
-goog.instantiatedSingletons_ = [];
-goog.define("goog.LOAD_MODULE_USING_EVAL", true);
-goog.define("goog.SEAL_MODULE_EXPORTS", goog.DEBUG);
-goog.loadedModules_ = {};
-goog.DEPENDENCIES_ENABLED = !COMPILED && goog.ENABLE_DEBUG_LOADER;
-if (goog.DEPENDENCIES_ENABLED) {
-  goog.included_ = {};
-  goog.dependencies_ = {pathIsModule:{}, nameToPath:{}, requires:{}, visited:{}, written:{}, deferred:{}};
-  goog.inHtmlDocument_ = function() {
-    var doc = goog.global.document;
-    return typeof doc != "undefined" && "write" in doc;
-  };
-  goog.findBasePath_ = function() {
-    if (goog.global.CLOSURE_BASE_PATH) {
-      goog.basePath = goog.global.CLOSURE_BASE_PATH;
-      return;
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-      if (!goog.inHtmlDocument_()) {
-        return;
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-    var doc = goog.global.document;
-    var scripts = doc.getElementsByTagName("script");
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-      var script = (scripts[i]);
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-      var l = qmark == -1 ? src.length : qmark;
-      if (src.substr(l - 7, 7) == "base.js") {
-        goog.basePath = src.substr(0, l - 7);
-        return;
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-    }
-  };
-  goog.importScript_ = function(src, opt_sourceText) {
-    var importScript = goog.global.CLOSURE_IMPORT_SCRIPT || goog.writeScriptTag_;
-    if (importScript(src, opt_sourceText)) {
-      goog.dependencies_.written[src] = true;
-    }
-  };
-  goog.IS_OLD_IE_ = !goog.global.atob && goog.global.document && goog.global.document.all;
-  goog.importModule_ = function(src) {
-    var bootstrap = 'goog.retrieveAndExecModule_("' + src + '");';
-    if (goog.importScript_("", bootstrap)) {
-      goog.dependencies_.written[src] = true;
-    }
-  };
-  goog.queuedModules_ = [];
-  goog.wrapModule_ = function(srcUrl, scriptText) {
-    if (!goog.LOAD_MODULE_USING_EVAL || !goog.isDef(goog.global.JSON)) {
-      return "" + "goog.loadModule(function(exports) {" + '"use strict";' + scriptText + "\n" + ";return exports" + "});" + "\n//# sourceURL=" + srcUrl + "\n";
-    } else {
-      return "" + "goog.loadModule(" + goog.global.JSON.stringify(scriptText + "\n//# sourceURL=" + srcUrl + "\n") + ");";
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-  };
-  goog.loadQueuedModules_ = function() {
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-    if (count > 0) {
-      var queue = goog.queuedModules_;
-      goog.queuedModules_ = [];
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-        var path = queue[i];
-        goog.maybeProcessDeferredPath_(path);
-      }
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-  goog.maybeProcessDeferredDep_ = function(name) {
-    if (goog.isDeferredModule_(name) && goog.allDepsAreAvailable_(name)) {
-      var path = goog.getPathFromDeps_(name);
-      goog.maybeProcessDeferredPath_(goog.basePath + path);
-    }
-  };
-  goog.isDeferredModule_ = function(name) {
-    var path = goog.getPathFromDeps_(name);
-    if (path && goog.dependencies_.pathIsModule[path]) {
-      var abspath = goog.basePath + path;
-      return abspath in goog.dependencies_.deferred;
-    }
-    return false;
-  };
-  goog.allDepsAreAvailable_ = function(name) {
-    var path = goog.getPathFromDeps_(name);
-    if (path && path in goog.dependencies_.requires) {
-      for (var requireName in goog.dependencies_.requires[path]) {
-        if (!goog.isProvided_(requireName) && !goog.isDeferredModule_(requireName)) {
-          return false;
-        }
-      }
-    }
-    return true;
-  };
-  goog.maybeProcessDeferredPath_ = function(abspath) {
-    if (abspath in goog.dependencies_.deferred) {
-      var src = goog.dependencies_.deferred[abspath];
-      delete goog.dependencies_.deferred[abspath];
-      goog.globalEval(src);
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-        exports = moduleDef.call(goog.global, {});
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-        if (goog.isString(moduleDef)) {
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-        } else {
-          throw Error("Invalid module definition");
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-      var moduleName = goog.moduleLoaderState_.moduleName;
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-        throw Error('Invalid module name "' + moduleName + '"');
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-        goog.constructNamespace_(moduleName, exports);
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-      goog.loadedModules_[moduleName] = exports;
-      if (goog.moduleLoaderState_.declareTestMethods) {
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-            goog.global[entry] = exports[entry];
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-    } finally {
-      goog.moduleLoaderState_ = previousState;
-    }
-  };
-  goog.loadModuleFromSource_ = function(source) {
-    var exports = {};
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-    return exports;
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-  goog.writeScriptTag_ = function(src, opt_sourceText) {
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-      var doc = goog.global.document;
-      if (doc.readyState == "complete") {
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-          throw Error('Cannot write "' + src + '" after document load');
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-  goog.lastNonModuleScriptIndex_ = 0;
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-      goog.loadQueuedModules_();
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-    return true;
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-  goog.writeScripts_ = function() {
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-    var seenScript = {};
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-        return;
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-          scripts.push(path);
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-          if (!goog.isProvided_(requireName)) {
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-              visitNode(deps.nameToPath[requireName]);
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-        visitNode(path);
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-      var path = scripts[i];
-      goog.dependencies_.written[path] = true;
-    }
-    var moduleState = goog.moduleLoaderState_;
-    goog.moduleLoaderState_ = null;
-    var loadingModule = false;
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-      var path = scripts[i];
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-        if (!deps.pathIsModule[path]) {
-          goog.importScript_(goog.basePath + path);
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-          loadingModule = true;
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-        }
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-        goog.moduleLoaderState_ = moduleState;
-        throw Error("Undefined script input");
-      }
-    }
-    goog.moduleLoaderState_ = moduleState;
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-  if (!goog.global.CLOSURE_NO_DEPS) {
-    goog.importScript_(goog.basePath + "deps.js");
-  }
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-    var importScript = goog.global.CLOSURE_IMPORT_SCRIPT || goog.writeScriptTag_;
-    var scriptText = null;
-    var xhr = new goog.global["XMLHttpRequest"];
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-      scriptText = this.responseText;
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-      var execModuleScript = goog.wrapModule_(src, scriptText);
-      var isOldIE = goog.IS_OLD_IE_;
-      if (isOldIE) {
-        goog.dependencies_.deferred[originalPath] = execModuleScript;
-        goog.queuedModules_.push(originalPath);
-      } else {
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-goog.isArrayLike = function(val) {
-  var type = goog.typeOf(val);
-  return type == "array" || type == "object" && typeof val.length == "number";
-};
-goog.isDateLike = function(val) {
-  return goog.isObject(val) && typeof val.getFullYear == "function";
-};
-goog.isString = function(val) {
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-goog.isBoolean = function(val) {
-  return typeof val == "boolean";
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-goog.isNumber = function(val) {
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-goog.isFunction = function(val) {
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-goog.isObject = function(val) {
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-goog.getUid = function(obj) {
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-goog.hasUid = function(obj) {
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-  }
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-goog.UID_PROPERTY_ = "closure_uid_" + (Math.random() * 1E9 >>> 0);
-goog.uidCounter_ = 0;
-goog.getHashCode = goog.getUid;
-goog.removeHashCode = goog.removeUid;
-goog.cloneObject = function(obj) {
-  var type = goog.typeOf(obj);
-  if (type == "object" || type == "array") {
-    if (obj.clone) {
-      return obj.clone();
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-    var clone = type == "array" ? [] : {};
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-      clone[key] = goog.cloneObject(obj[key]);
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-    return clone;
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-  return obj;
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-goog.bindNative_ = function(fn, selfObj, var_args) {
-  return(fn.call.apply(fn.bind, arguments));
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-goog.bind = function(fn, selfObj, var_args) {
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-    goog.bind = goog.bindNative_;
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-    goog.bind = goog.bindJs_;
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-  return goog.bind.apply(null, arguments);
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-goog.partial = function(fn, var_args) {
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-goog.mixin = function(target, source) {
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-goog.now = goog.TRUSTED_SITE && Date.now || function() {
-  return+new Date;
-};
-goog.globalEval = function(script) {
-  if (goog.global.execScript) {
-    goog.global.execScript(script, "JavaScript");
-  } else {
-    if (goog.global.eval) {
-      if (goog.evalWorksForGlobals_ == null) {
-        goog.global.eval("var _et_ = 1;");
-        if (typeof goog.global["_et_"] != "undefined") {
-          delete goog.global["_et_"];
-          goog.evalWorksForGlobals_ = true;
-        } else {
-          goog.evalWorksForGlobals_ = false;
-        }
-      }
-      if (goog.evalWorksForGlobals_) {
-        goog.global.eval(script);
-      } else {
-        var doc = goog.global.document;
-        var scriptElt = doc.createElement("script");
-        scriptElt.type = "text/javascript";
-        scriptElt.defer = false;
-        scriptElt.appendChild(doc.createTextNode(script));
-        doc.body.appendChild(scriptElt);
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-    } else {
-      throw Error("goog.globalEval not available");
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-  }
-};
-goog.evalWorksForGlobals_ = null;
-goog.cssNameMapping_;
-goog.cssNameMappingStyle_;
-goog.getCssName = function(className, opt_modifier) {
-  var getMapping = function(cssName) {
-    return goog.cssNameMapping_[cssName] || cssName;
-  };
-  var renameByParts = function(cssName) {
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-  var rename;
-  if (goog.cssNameMapping_) {
-    rename = goog.cssNameMappingStyle_ == "BY_WHOLE" ? getMapping : renameByParts;
-  } else {
-    rename = function(a) {
-      return a;
-    };
-  }
-  if (opt_modifier) {
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-  } else {
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-  }
-};
-goog.setCssNameMapping = function(mapping, opt_style) {
-  goog.cssNameMapping_ = mapping;
-  goog.cssNameMappingStyle_ = opt_style;
-};
-goog.global.CLOSURE_CSS_NAME_MAPPING;
-if (!COMPILED && goog.global.CLOSURE_CSS_NAME_MAPPING) {
-  goog.cssNameMapping_ = goog.global.CLOSURE_CSS_NAME_MAPPING;
-}
-goog.getMsg = function(str, opt_values) {
-  if (opt_values) {
-    str = str.replace(/\{\$([^}]+)}/g, function(match, key) {
-      return key in opt_values ? opt_values[key] : match;
-    });
-  }
-  return str;
-};
-goog.getMsgWithFallback = function(a, b) {
-  return a;
-};
-goog.exportSymbol = function(publicPath, object, opt_objectToExportTo) {
-  goog.exportPath_(publicPath, object, opt_objectToExportTo);
-};
-goog.exportProperty = function(object, publicName, symbol) {
-  object[publicName] = symbol;
-};
-goog.inherits = function(childCtor, parentCtor) {
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-  tempCtor.prototype = parentCtor.prototype;
-  childCtor.superClass_ = parentCtor.prototype;
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-  };
-};
-goog.base = function(me, opt_methodName, var_args) {
-  var caller = arguments.callee.caller;
-  if (goog.STRICT_MODE_COMPATIBLE || goog.DEBUG && !caller) {
-    throw Error("arguments.caller not defined.  goog.base() cannot be used " + "with strict mode code. See " + "http://www.ecma-international.org/ecma-262/5.1/#sec-C");
-  }
-  if (caller.superClass_) {
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-  if (me[opt_methodName] === caller) {
-    return me.constructor.prototype[opt_methodName].apply(me, args);
-  } else {
-    throw Error("goog.base called from a method of one name " + "to a method of a different name");
-  }
-};
-goog.scope = function(fn) {
-  fn.call(goog.global);
-};
-if (!COMPILED) {
-  goog.global["COMPILED"] = COMPILED;
-}
-goog.defineClass = function(superClass, def) {
-  var constructor = def.constructor;
-  var statics = def.statics;
-  if (!constructor || constructor == Object.prototype.constructor) {
-    constructor = function() {
-      throw Error("cannot instantiate an interface (no constructor defined).");
-    };
-  }
-  var cls = goog.defineClass.createSealingConstructor_(constructor, superClass);
-  if (superClass) {
-    goog.inherits(cls, superClass);
-  }
-  delete def.constructor;
-  delete def.statics;
-  goog.defineClass.applyProperties_(cls.prototype, def);
-  if (statics != null) {
-    if (statics instanceof Function) {
-      statics(cls);
-    } else {
-      goog.defineClass.applyProperties_(cls, statics);
-    }
-  }
-  return cls;
-};
-goog.defineClass.ClassDescriptor;
-goog.define("goog.defineClass.SEAL_CLASS_INSTANCES", goog.DEBUG);
-goog.defineClass.createSealingConstructor_ = function(ctr, superClass) {
-  if (goog.defineClass.SEAL_CLASS_INSTANCES && Object.seal instanceof Function) {
-    if (superClass && superClass.prototype && superClass.prototype[goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_]) {
-      return ctr;
-    }
-    var wrappedCtr = function() {
-      var instance = ctr.apply(this, arguments) || this;
-      instance[goog.UID_PROPERTY_] = instance[goog.UID_PROPERTY_];
-      if (this.constructor === wrappedCtr) {
-        Object.seal(instance);
-      }
-      return instance;
-    };
-    return wrappedCtr;
-  }
-  return ctr;
-};
-goog.defineClass.OBJECT_PROTOTYPE_FIELDS_ = ["constructor", "hasOwnProperty", "isPrototypeOf", "propertyIsEnumerable", "toLocaleString", "toString", "valueOf"];
-goog.defineClass.applyProperties_ = function(target, source) {
-  var key;
-  for (key in source) {
-    if (Object.prototype.hasOwnProperty.call(source, key)) {
-      target[key] = source[key];
-    }
-  }
-  for (var i = 0;i < goog.defineClass.OBJECT_PROTOTYPE_FIELDS_.length;i++) {
-    key = goog.defineClass.OBJECT_PROTOTYPE_FIELDS_[i];
-    if (Object.prototype.hasOwnProperty.call(source, key)) {
-      target[key] = source[key];
-    }
-  }
-};
-goog.tagUnsealableClass = function(ctr) {
-  if (!COMPILED && goog.defineClass.SEAL_CLASS_INSTANCES) {
-    ctr.prototype[goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_] = true;
-  }
-};
-goog.UNSEALABLE_CONSTRUCTOR_PROPERTY_ = "goog_defineClass_legacy_unsealable";
-goog.provide("goog.debug.Error");
-goog.debug.Error = function(opt_msg) {
-  if (Error.captureStackTrace) {
-    Error.captureStackTrace(this, goog.debug.Error);
-  } else {
-    var stack = (new Error).stack;
-    if (stack) {
-      this.stack = stack;
-    }
-  }
-  if (opt_msg) {
-    this.message = String(opt_msg);
-  }
-};
-goog.inherits(goog.debug.Error, Error);
-goog.debug.Error.prototype.name = "CustomError";
-goog.provide("goog.object");
-goog.object.forEach = function(obj, f, opt_obj) {
-  for (var key in obj) {
-    f.call(opt_obj, obj[key], key, obj);
-  }
-};
-goog.object.filter = function(obj, f, opt_obj) {
-  var res = {};
-  for (var key in obj) {
-    if (f.call(opt_obj, obj[key], key, obj)) {
-      res[key] = obj[key];
-    }
-  }
-  return res;
-};
-goog.object.map = function(obj, f, opt_obj) {
-  var res = {};
-  for (var key in obj) {
-    res[key] = f.call(opt_obj, obj[key], key, obj);
-  }
-  return res;
-};
-goog.object.some = function(obj, f, opt_obj) {
-  for (var key in obj) {
-    if (f.call(opt_obj, obj[key], key, obj)) {
-      return true;
-    }
-  }
-  return false;
-};
-goog.object.every = function(obj, f, opt_obj) {
-  for (var key in obj) {
-    if (!f.call(opt_obj, obj[key], key, obj)) {
-      return false;
-    }
-  }
-  return true;
-};
-goog.object.getCount = function(obj) {
-  var rv = 0;
-  for (var key in obj) {
-    rv++;
-  }
-  return rv;
-};
-goog.object.getAnyKey = function(obj) {
-  for (var key in obj) {
-    return key;
-  }
-};
-goog.object.getAnyValue = function(obj) {
-  for (var key in obj) {
-    return obj[key];
-  }
-};
-goog.object.contains = function(obj, val) {
-  return goog.object.containsValue(obj, val);
-};
-goog.object.getValues = function(obj) {
-  var res = [];
-  var i = 0;
-  for (var key in obj) {
-    res[i++] = obj[key];
-  }
-  return res;
-};
-goog.object.getKeys = function(obj) {
-  var res = [];
-  var i = 0;
-  for (var key in obj) {
-    res[i++] = key;
-  }
-  return res;
-};
-goog.object.getValueByKeys = function(obj, var_args) {
-  var isArrayLike = goog.isArrayLike(var_args);
-  var keys = isArrayLike ? var_args : arguments;
-  for (var i = isArrayLike ? 0 : 1;i < keys.length;i++) {
-    obj = obj[keys[i]];
-    if (!goog.isDef(obj)) {
-      break;
-    }
-  }
-  return obj;
-};
-goog.object.containsKey = function(obj, key) {
-  return key in obj;
-};
-goog.object.containsValue = function(obj, val) {
-  for (var key in obj) {
-    if (obj[key] == val) {
-      return true;
-    }
-  }
-  return false;
-};
-goog.object.findKey = function(obj, f, opt_this) {
-  for (var key in obj) {
-    if (f.call(opt_this, obj[key], key, obj)) {
-      return key;
-    }
-  }
-  return undefined;
-};
-goog.object.findValue = function(obj, f, opt_this) {
-  var key = goog.object.findKey(obj, f, opt_this);
-  return key && obj[key];
-};
-goog.object.isEmpty = function(obj) {
-  for (var key in obj) {
-    return false;
-  }
-  return true;
-};
-goog.object.clear = function(obj) {
-  for (var i in obj) {
-    delete obj[i];
-  }
-};
-goog.object.remove = function(obj, key) {
-  var rv;
-  if (rv = key in obj) {
-    delete obj[key];
-  }
-  return rv;
-};
-goog.object.add = function(obj, key, val) {
-  if (key in obj) {
-    throw Error('The object already contains the key "' + key + '"');
-  }
-  goog.object.set(obj, key, val);
-};
-goog.object.get = function(obj, key, opt_val) {
-  if (key in obj) {
-    return obj[key];
-  }
-  return opt_val;
-};
-goog.object.set = function(obj, key, value) {
-  obj[key] = value;
-};
-goog.object.setIfUndefined = function(obj, key, value) {
-  return key in obj ? obj[key] : obj[key] = value;
-};
-goog.object.setWithReturnValueIfNotSet = function(obj, key, f) {
-  if (key in obj) {
-    return obj[key];
-  }
-  var val = f();
-  obj[key] = val;
-  return val;
-};
-goog.object.equals = function(a, b) {
-  for (var k in a) {
-    if (!(k in b) || a[k] !== b[k]) {
-      return false;
-    }
-  }
-  for (var k in b) {
-    if (!(k in a)) {
-      return false;
-    }
-  }
-  return true;
-};
-goog.object.clone = function(obj) {
-  var res = {};
-  for (var key in obj) {
-    res[key] = obj[key];
-  }
-  return res;
-};
-goog.object.unsafeClone = function(obj) {
-  var type = goog.typeOf(obj);
-  if (type == "object" || type == "array") {
-    if (obj.clone) {
-      return obj.clone();
-    }
-    var clone = type == "array" ? [] : {};
-    for (var key in obj) {
-      clone[key] = goog.object.unsafeClone(obj[key]);
-    }
-    return clone;
-  }
-  return obj;
-};
-goog.object.transpose = function(obj) {
-  var transposed = {};
-  for (var key in obj) {
-    transposed[obj[key]] = key;
-  }
-  return transposed;
-};
-goog.object.PROTOTYPE_FIELDS_ = ["constructor", "hasOwnProperty", "isPrototypeOf", "propertyIsEnumerable", "toLocaleString", "toString", "valueOf"];
-goog.object.extend = function(target, var_args) {
-  var key, source;
-  for (var i = 1;i < arguments.length;i++) {
-    source = arguments[i];
-    for (key in source) {
-      target[key] = source[key];
-    }
-    for (var j = 0;j < goog.object.PROTOTYPE_FIELDS_.length;j++) {
-      key = goog.object.PROTOTYPE_FIELDS_[j];
-      if (Object.prototype.hasOwnProperty.call(source, key)) {
-        target[key] = source[key];
-      }
-    }
-  }
-};
-goog.object.create = function(var_args) {
-  var argLength = arguments.length;
-  if (argLength == 1 && goog.isArray(arguments[0])) {
-    return goog.object.create.apply(null, arguments[0]);
-  }
-  if (argLength % 2) {
-    throw Error("Uneven number of arguments");
-  }
-  var rv = {};
-  for (var i = 0;i < argLength;i += 2) {
-    rv[arguments[i]] = arguments[i + 1];
-  }
-  return rv;
-};
-goog.object.createSet = function(var_args) {
-  var argLength = arguments.length;
-  if (argLength == 1 && goog.isArray(arguments[0])) {
-    return goog.object.createSet.apply(null, arguments[0]);
-  }
-  var rv = {};
-  for (var i = 0;i < argLength;i++) {
-    rv[arguments[i]] = true;
-  }
-  return rv;
-};
-goog.object.createImmutableView = function(obj) {
-  var result = obj;
-  if (Object.isFrozen && !Object.isFrozen(obj)) {
-    result = Object.create(obj);
-    Object.freeze(result);
-  }
-  return result;
-};
-goog.object.isImmutableView = function(obj) {
-  return!!Object.isFrozen && Object.isFrozen(obj);
-};
-goog.provide("goog.dom.NodeType");
-goog.dom.NodeType = {ELEMENT:1, ATTRIBUTE:2, TEXT:3, CDATA_SECTION:4, ENTITY_REFERENCE:5, ENTITY:6, PROCESSING_INSTRUCTION:7, COMMENT:8, DOCUMENT:9, DOCUMENT_TYPE:10, DOCUMENT_FRAGMENT:11, NOTATION:12};
-goog.provide("goog.json");
-goog.provide("goog.json.Replacer");
-goog.provide("goog.json.Reviver");
-goog.provide("goog.json.Serializer");
-goog.define("goog.json.USE_NATIVE_JSON", false);
-goog.json.isValid = function(s) {
-  if (/^\s*$/.test(s)) {
-    return false;
-  }
-  var backslashesRe = /\\["\\\/bfnrtu]/g;
-  var simpleValuesRe = /"[^"\\\n\r\u2028\u2029\x00-\x08\x0a-\x1f]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g;
-  var openBracketsRe = /(?:^|:|,)(?:[\s\u2028\u2029]*\[)+/g;
-  var remainderRe = /^[\],:{}\s\u2028\u2029]*$/;
-  return remainderRe.test(s.replace(backslashesRe, "@").replace(simpleValuesRe, "]").replace(openBracketsRe, ""));
-};
-goog.json.parse = goog.json.USE_NATIVE_JSON ? (goog.global["JSON"]["parse"]) : function(s) {
-  var o = String(s);
-  if (goog.json.isValid(o)) {
-    try {
-      return(eval("(" + o + ")"));
-    } catch (ex) {
-    }
-  }
-  throw Error("Invalid JSON string: " + o);
-};
-goog.json.unsafeParse = goog.json.USE_NATIVE_JSON ? (goog.global["JSON"]["parse"]) : function(s) {
-  return(eval("(" + s + ")"));
-};
-goog.json.Replacer;
-goog.json.Reviver;
-goog.json.serialize = goog.json.USE_NATIVE_JSON ? (goog.global["JSON"]["stringify"]) : function(object, opt_replacer) {
-  return(new goog.json.Serializer(opt_replacer)).serialize(object);
-};
-goog.json.Serializer = function(opt_replacer) {
-  this.replacer_ = opt_replacer;
-};
-goog.json.Serializer.prototype.serialize = function(object) {
-  var sb = [];
-  this.serializeInternal(object, sb);
-  return sb.join("");
-};
-goog.json.Serializer.prototype.serializeInternal = function(object, sb) {
-  switch(typeof object) {
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-      this.serializeString_((object), sb);
-      break;
-    case "number":
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-      break;
-    case "boolean":
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-      break;
-    case "undefined":
-      sb.push("null");
-      break;
-    case "object":
-      if (object == null) {
-        sb.push("null");
-        break;
-      }
-      if (goog.isArray(object)) {
-        this.serializeArray((object), sb);
-        break;
-      }
-      this.serializeObject_((object), sb);
-      break;
-    case "function":
-      break;
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-      throw Error("Unknown type: " + typeof object);;
-  }
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-goog.json.Serializer.charToJsonCharCache_ = {'"':'\\"', "\\":"\\\\", "/":"\\/", "\b":"\\b", "\f":"\\f", "\n":"\\n", "\r":"\\r", "\t":"\\t", "\x0B":"\\u000b"};
-goog.json.Serializer.charsToReplace_ = /\uffff/.test("\uffff") ? /[\\\"\x00-\x1f\x7f-\uffff]/g : /[\\\"\x00-\x1f\x7f-\xff]/g;
-goog.json.Serializer.prototype.serializeString_ = function(s, sb) {
-  sb.push('"', s.replace(goog.json.Serializer.charsToReplace_, function(c) {
-    if (c in goog.json.Serializer.charToJsonCharCache_) {
-      return goog.json.Serializer.charToJsonCharCache_[c];
-    }
-    var cc = c.charCodeAt(0);
-    var rv = "\\u";
-    if (cc < 16) {
-      rv += "000";
-    } else {
-      if (cc < 256) {
-        rv += "00";
-      } else {
-        if (cc < 4096) {
-          rv += "0";
-        }
-      }
-    }
-    return goog.json.Serializer.charToJsonCharCache_[c] = rv + cc.toString(16);
-  }), '"');
-};
-goog.json.Serializer.prototype.serializeNumber_ = function(n, sb) {
-  sb.push(isFinite(n) && !isNaN(n) ? n : "null");
-};
-goog.json.Serializer.prototype.serializeArray = function(arr, sb) {
-  var l = arr.length;
-  sb.push("[");
-  var sep = "";
-  for (var i = 0;i < l;i++) {
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-    sep = ",";
-  }
-  sb.push("]");
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-goog.json.Serializer.prototype.serializeObject_ = function(obj, sb) {
-  sb.push("{");
-  var sep = "";
-  for (var key in obj) {
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-        sep = ",";
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-  }
-  sb.push("}");
-};
-goog.provide("goog.string");
-goog.provide("goog.string.Unicode");
-goog.define("goog.string.DETECT_DOUBLE_ESCAPING", false);
-goog.define("goog.string.FORCE_NON_DOM_HTML_UNESCAPING", false);
-goog.string.Unicode = {NBSP:"\u00a0"};
-goog.string.startsWith = function(str, prefix) {
-  return str.lastIndexOf(prefix, 0) == 0;
-};
-goog.string.endsWith = function(str, suffix) {
-  var l = str.length - suffix.length;
-  return l >= 0 && str.indexOf(suffix, l) == l;
-};
-goog.string.caseInsensitiveStartsWith = function(str, prefix) {
-  return goog.string.caseInsensitiveCompare(prefix, str.substr(0, prefix.length)) == 0;
-};
-goog.string.caseInsensitiveEndsWith = function(str, suffix) {
-  return goog.string.caseInsensitiveCompare(suffix, str.substr(str.length - suffix.length, suffix.length)) == 0;
-};
-goog.string.caseInsensitiveEquals = function(str1, str2) {
-  return str1.toLowerCase() == str2.toLowerCase();
-};
-goog.string.subs = function(str, var_args) {
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-  var returnString = "";
-  var subsArguments = Array.prototype.slice.call(arguments, 1);
-  while (subsArguments.length && splitParts.length > 1) {
-    returnString += splitParts.shift() + subsArguments.shift();
-  }
-  return returnString + splitParts.join("%s");
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-goog.string.collapseWhitespace = function(str) {
-  return str.replace(/[\s\xa0]+/g, " ").replace(/^\s+|\s+$/g, "");
-};
-goog.string.isEmptyOrWhitespace = function(str) {
-  return/^[\s\xa0]*$/.test(str);
-};
-goog.string.isEmptyString = function(str) {
-  return str.length == 0;
-};
-goog.string.isEmpty = goog.string.isEmptyOrWhitespace;
-goog.string.isEmptyOrWhitespaceSafe = function(str) {
-  return goog.string.isEmptyOrWhitespace(goog.string.makeSafe(str));
-};
-goog.string.isEmptySafe = goog.string.isEmptyOrWhitespaceSafe;
-goog.string.isBreakingWhitespace = function(str) {
-  return!/[^\t\n\r ]/.test(str);
-};
-goog.string.isAlpha = function(str) {
-  return!/[^a-zA-Z]/.test(str);
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-goog.string.isNumeric = function(str) {
-  return!/[^0-9]/.test(str);
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-goog.string.isAlphaNumeric = function(str) {
-  return!/[^a-zA-Z0-9]/.test(str);
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-goog.string.isSpace = function(ch) {
-  return ch == " ";
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-goog.string.isUnicodeChar = function(ch) {
-  return ch.length == 1 && ch >= " " && ch <= "~" || ch >= "\u0080" && ch <= "\ufffd";
-};
-goog.string.stripNewlines = function(str) {
-  return str.replace(/(\r\n|\r|\n)+/g, " ");
-};
-goog.string.canonicalizeNewlines = function(str) {
-  return str.replace(/(\r\n|\r|\n)/g, "\n");
-};
-goog.string.normalizeWhitespace = function(str) {
-  return str.replace(/\xa0|\s/g, " ");
-};
-goog.string.normalizeSpaces = function(str) {
-  return str.replace(/\xa0|[ \t]+/g, " ");
-};
-goog.string.collapseBreakingSpaces = function(str) {
-  return str.replace(/[\t\r\n ]+/g, " ").replace(/^[\t\r\n ]+|[\t\r\n ]+$/g, "");
-};
-goog.string.trim = goog.TRUSTED_SITE && String.prototype.trim ? function(str) {
-  return str.trim();
-} : function(str) {
-  return str.replace(/^[\s\xa0]+|[\s\xa0]+$/g, "");
-};
-goog.string.trimLeft = function(str) {
-  return str.replace(/^[\s\xa0]+/, "");
-};
-goog.string.trimRight = function(str) {
-  return str.replace(/[\s\xa0]+$/, "");
-};
-goog.string.caseInsensitiveCompare = function(str1, str2) {
-  var test1 = String(str1).toLowerCase();
-  var test2 = String(str2).toLowerCase();
-  if (test1 < test2) {
-    return-1;
-  } else {
-    if (test1 == test2) {
-      return 0;
-    } else {
-      return 1;
-    }
-  }
-};
-goog.string.numerateCompareRegExp_ = /(\.\d+)|(\d+)|(\D+)/g;
-goog.string.numerateCompare = function(str1, str2) {
-  if (str1 == str2) {
-    return 0;
-  }
-  if (!str1) {
-    return-1;
-  }
-  if (!str2) {
-    return 1;
-  }
-  var tokens1 = str1.toLowerCase().match(goog.string.numerateCompareRegExp_);
-  var tokens2 = str2.toLowerCase().match(goog.string.numerateCompareRegExp_);
-  var count = Math.min(tokens1.length, tokens2.length);
-  for (var i = 0;i < count;i++) {
-    var a = tokens1[i];
-    var b = tokens2[i];
-    if (a != b) {
-      var num1 = parseInt(a, 10);
-      if (!isNaN(num1)) {
-        var num2 = parseInt(b, 10);
-        if (!isNaN(num2) && num1 - num2) {
-          return num1 - num2;
-        }
-      }
-      return a < b ? -1 : 1;
-    }
-  }
-  if (tokens1.length != tokens2.length) {
-    return tokens1.length - tokens2.length;
-  }
-  return str1 < str2 ? -1 : 1;
-};
-goog.string.urlEncode = function(str) {
-  return encodeURIComponent(String(str));
-};
-goog.string.urlDecode = function(str) {
-  return decodeURIComponent(str.replace(/\+/g, " "));
-};
-goog.string.newLineToBr = function(str, opt_xml) {
-  return str.replace(/(\r\n|\r|\n)/g, opt_xml ? "<br />" : "<br>");
-};
-goog.string.htmlEscape = function(str, opt_isLikelyToContainHtmlChars) {
-  if (opt_isLikelyToContainHtmlChars) {
-    str = str.replace(goog.string.AMP_RE_, "&amp;").replace(goog.string.LT_RE_, "&lt;").replace(goog.string.GT_RE_, "&gt;").replace(goog.string.QUOT_RE_, "&quot;").replace(goog.string.SINGLE_QUOTE_RE_, "&#39;").replace(goog.string.NULL_RE_, "&#0;");
-    if (goog.string.DETECT_DOUBLE_ESCAPING) {
-      str = str.replace(goog.string.E_RE_, "&#101;");
-    }
-    return str;
-  } else {
-    if (!goog.string.ALL_RE_.test(str)) {
-      return str;
-    }
-    if (str.indexOf("&") != -1) {
-      str = str.replace(goog.string.AMP_RE_, "&amp;");
-    }
-    if (str.indexOf("<") != -1) {
-      str = str.replace(goog.string.LT_RE_, "&lt;");
-    }
-    if (str.indexOf(">") != -1) {
-      str = str.replace(goog.string.GT_RE_, "&gt;");
-    }
-    if (str.indexOf('"') != -1) {
-      str = str.replace(goog.string.QUOT_RE_, "&quot;");
-    }
-    if (str.indexOf("'") != -1) {
-      str = str.replace(goog.string.SINGLE_QUOTE_RE_, "&#39;");
-    }
-    if (str.indexOf("\x00") != -1) {
-      str = str.replace(goog.string.NULL_RE_, "&#0;");
-    }
-    if (goog.string.DETECT_DOUBLE_ESCAPING && str.indexOf("e") != -1) {
-      str = str.replace(goog.string.E_RE_, "&#101;");
-    }
-    return str;
-  }
-};
-goog.string.AMP_RE_ = /&/g;
-goog.string.LT_RE_ = /</g;
-goog.string.GT_RE_ = />/g;
-goog.string.QUOT_RE_ = /"/g;
-goog.string.SINGLE_QUOTE_RE_ = /'/g;
-goog.string.NULL_RE_ = /\x00/g;
-goog.string.E_RE_ = /e/g;
-goog.string.ALL_RE_ = goog.string.DETECT_DOUBLE_ESCAPING ? /[\x00&<>"'e]/ : /[\x00&<>"']/;
-goog.string.unescapeEntities = function(str) {
-  if (goog.string.contains(str, "&")) {
-    if (!goog.string.FORCE_NON_DOM_HTML_UNESCAPING && "document" in goog.global) {
-      return goog.string.unescapeEntitiesUsingDom_(str);
-    } else {
-      return goog.string.unescapePureXmlEntities_(str);
-    }
-  }
-  return str;
-};
-goog.string.unescapeEntitiesWithDocument = function(str, document) {
-  if (goog.string.contains(str, "&")) {
-    return goog.string.unescapeEntitiesUsingDom_(str, document);
-  }
-  return str;
-};
-goog.string.unescapeEntitiesUsingDom_ = function(str, opt_document) {
-  var seen = {"&amp;":"&", "&lt;":"<", "&gt;":">", "&quot;":'"'};
-  var div;
-  if (opt_document) {
-    div = opt_document.createElement("div");
-  } else {
-    div = goog.global.document.createElement("div");
-  }
-  return str.replace(goog.string.HTML_ENTITY_PATTERN_, function(s, entity) {
-    var value = seen[s];
-    if (value) {
-      return value;
-    }
-    if (entity.charAt(0) == "#") {
-      var n = Number("0" + entity.substr(1));
-      if (!isNaN(n)) {
-        value = String.fromCharCode(n);
-      }
-    }
-    if (!value) {
-      div.innerHTML = s + " ";
-      value = div.firstChild.nodeValue.slice(0, -1);
-    }
-    return seen[s] = value;
-  });
-};
-goog.string.unescapePureXmlEntities_ = function(str) {
-  return str.replace(/&([^;]+);/g, function(s, entity) {
-    switch(entity) {
-      case "amp":
-        return "&";
-      case "lt":
-        return "<";
-      case "gt":
-        return ">";
-      case "quot":
-        return'"';
-      default:
-        if (entity.charAt(0) == "#") {
-          var n = Number("0" + entity.substr(1));
-          if (!isNaN(n)) {
-            return String.fromCharCode(n);
-          }
-        }
-        return s;
-    }
-  });
-};
-goog.string.HTML_ENTITY_PATTERN_ = /&([^;\s<&]+);?/g;
-goog.string.whitespaceEscape = function(str, opt_xml) {
-  return goog.string.newLineToBr(str.replace(/  /g, " &#160;"), opt_xml);
-};
-goog.string.preserveSpaces = function(str) {
-  return str.replace(/(^|[\n ]) /g, "$1" + goog.string.Unicode.NBSP);
-};
-goog.string.stripQuotes = function(str, quoteChars) {
-  var length = quoteChars.length;
-  for (var i = 0;i < length;i++) {
-    var quoteChar = length == 1 ? quoteChars : quoteChars.charAt(i);
-    if (str.charAt(0) == quoteChar && str.charAt(str.length - 1) == quoteChar) {
-      return str.substring(1, str.length - 1);
-    }
-  }
-  return str;
-};
-goog.string.truncate = function(str, chars, opt_protectEscapedCharacters) {
-  if (opt_protectEscapedCharacters) {
-    str = goog.string.unescapeEntities(str);
-  }
-  if (str.length > chars) {
-    str = str.substring(0, chars - 3) + "...";
-  }
-  if (opt_protectEscapedCharacters) {
-    str = goog.string.htmlEscape(str);
-  }
-  return str;
-};
-goog.string.truncateMiddle = function(str, chars, opt_protectEscapedCharacters, opt_trailingChars) {
-  if (opt_protectEscapedCharacters) {
-    str = goog.string.unescapeEntities(str);
-  }
-  if (opt_trailingChars && str.length > chars) {
-    if (opt_trailingChars > chars) {
-      opt_trailingChars = chars;
-    }
-    var endPoint = str.length - opt_trailingChars;
-    var startPoint = chars - opt_trailingChars;
-    str = str.substring(0, startPoint) + "..." + str.substring(endPoint);
-  } else {
-    if (str.length > chars) {
-      var half = Math.floor(chars / 2);
-      var endPos = str.length - half;
-      half += chars % 2;
-      str = str.substring(0, half) + "..." + str.substring(endPos);
-    }
-  }
-  if (opt_protectEscapedCharacters) {
-    str = goog.string.htmlEscape(str);
-  }
-  return str;
-};
-goog.string.specialEscapeChars_ = {"\x00":"\\0", "\b":"\\b", "\f":"\\f", "\n":"\\n", "\r":"\\r", "\t":"\\t", "\x0B":"\\x0B", '"':'\\"', "\\":"\\\\"};
-goog.string.jsEscapeCache_ = {"'":"\\'"};
-goog.string.quote = function(s) {
-  s = String(s);
-  if (s.quote) {
-    return s.quote();
-  } else {
-    var sb = ['"'];
-    for (var i = 0;i < s.length;i++) {
-      var ch = s.charAt(i);
-      var cc = ch.charCodeAt(0);
-      sb[i + 1] = goog.string.specialEscapeChars_[ch] || (cc > 31 && cc < 127 ? ch : goog.string.escapeChar(ch));
-    }
-    sb.push('"');
-    return sb.join("");
-  }
-};
-goog.string.escapeString = function(str) {
-  var sb = [];
-  for (var i = 0;i < str.length;i++) {
-    sb[i] = goog.string.escapeChar(str.charAt(i));
-  }
-  return sb.join("");
-};
-goog.string.escapeChar = function(c) {
-  if (c in goog.string.jsEscapeCache_) {
-    return goog.string.jsEscapeCache_[c];
-  }
-  if (c in goog.string.specialEscapeChars_) {
-    return goog.string.jsEscapeCache_[c] = goog.string.specialEscapeChars_[c];
-  }
-  var rv = c;
-  var cc = c.charCodeAt(0);
-  if (cc > 31 && cc < 127) {
-    rv = c;
-  } else {
-    if (cc < 256) {
-      rv = "\\x";
-      if (cc < 16 || cc > 256) {
-        rv += "0";
-      }
-    } else {
-      rv = "\\u";
-      if (cc < 4096) {
-        rv += "0";
-      }
-    }
-    rv += cc.toString(16).toUpperCase();
-  }
-  return goog.string.jsEscapeCache_[c] = rv;
-};
-goog.string.contains = function(str, subString) {
-  return str.indexOf(subString) != -1;
-};
-goog.string.caseInsensitiveContains = function(str, subString) {
-  return goog.string.contains(str.toLowerCase(), subString.toLowerCase());
-};
-goog.string.countOf = function(s, ss) {
-  return s && ss ? s.split(ss).length - 1 : 0;
-};
-goog.string.removeAt = function(s, index, stringLength) {
-  var resultStr = s;
-  if (index >= 0 && index < s.length && stringLength > 0) {
-    resultStr = s.substr(0, index) + s.substr(index + stringLength, s.length - index - stringLength);
-  }
-  return resultStr;
-};
-goog.string.remove = function(s, ss) {
-  var re = new RegExp(goog.string.regExpEscape(ss), "");
-  return s.replace(re, "");
-};
-goog.string.removeAll = function(s, ss) {
-  var re = new RegExp(goog.string.regExpEscape(ss), "g");
-  return s.replace(re, "");
-};
-goog.string.regExpEscape = function(s) {
-  return String(s).replace(/([-()\[\]{}+?*.$\^|,:#<!\\])/g, "\\$1").replace(/\x08/g, "\\x08");
-};
-goog.string.repeat = function(string, length) {
-  return(new Array(length + 1)).join(string);
-};
-goog.string.padNumber = function(num, length, opt_precision) {
-  var s = goog.isDef(opt_precision) ? num.toFixed(opt_precision) : String(num);
-  var index = s.indexOf(".");
-  if (index == -1) {
-    index = s.length;
-  }
-  return goog.string.repeat("0", Math.max(0, length - index)) + s;
-};
-goog.string.makeSafe = function(obj) {
-  return obj == null ? "" : String(obj);
-};
-goog.string.buildString = function(var_args) {
-  return Array.prototype.join.call(arguments, "");
-};
-goog.string.getRandomString = function() {
-  var x = 2147483648;
-  return Math.floor(Math.random() * x).toString(36) + Math.abs(Math.floor(Math.random() * x) ^ goog.now()).toString(36);
-};
-goog.string.compareVersions = function(version1, version2) {
-  var order = 0;
-  var v1Subs = goog.string.trim(String(version1)).split(".");
-  var v2Subs = goog.string.trim(String(version2)).split(".");
-  var subCount = Math.max(v1Subs.length, v2Subs.length);
-  for (var subIdx = 0;order == 0 && subIdx < subCount;subIdx++) {
-    var v1Sub = v1Subs[subIdx] || "";
-    var v2Sub = v2Subs[subIdx] || "";
-    var v1CompParser = new RegExp("(\\d*)(\\D*)", "g");
-    var v2CompParser = new RegExp("(\\d*)(\\D*)", "g");
-    do {
-      var v1Comp = v1CompParser.exec(v1Sub) || ["", "", ""];
-      var v2Comp = v2CompParser.exec(v2Sub) || ["", "", ""];
-      if (v1Comp[0].length == 0 && v2Comp[0].length == 0) {
-        break;
-      }
-      var v1CompNum = v1Comp[1].length == 0 ? 0 : parseInt(v1Comp[1], 10);
-      var v2CompNum = v2Comp[1].length == 0 ? 0 : parseInt(v2Comp[1], 10);
-      order = goog.string.compareElements_(v1CompNum, v2CompNum) || goog.string.compareElements_(v1Comp[2].length == 0, v2Comp[2].length == 0) || goog.string.compareElements_(v1Comp[2], v2Comp[2]);
-    } while (order == 0);
-  }
-  return order;
-};
-goog.string.compareElements_ = function(left, right) {
-  if (left < right) {
-    return-1;
-  } else {
-    if (left > right) {
-      return 1;
-    }
-  }
-  return 0;
-};
-goog.string.HASHCODE_MAX_ = 4294967296;
-goog.string.hashCode = function(str) {
-  var result = 0;
-  for (var i = 0;i < str.length;++i) {
-    result = 31 * result + str.charCodeAt(i);
-    result %= goog.string.HASHCODE_MAX_;
-  }
-  return result;
-};
-goog.string.uniqueStringCounter_ = Math.random() * 2147483648 | 0;
-goog.string.createUniqueString = function() {
-  return "goog_" + goog.string.uniqueStringCounter_++;
-};
-goog.string.toNumber = function(str) {
-  var num = Number(str);
-  if (num == 0 && goog.string.isEmptyOrWhitespace(str)) {
-    return NaN;
-  }
-  return num;
-};
-goog.string.isLowerCamelCase = function(str) {
-  return/^[a-z]+([A-Z][a-z]*)*$/.test(str);
-};
-goog.string.isUpperCamelCase = function(str) {
-  return/^([A-Z][a-z]*)+$/.test(str);
-};
-goog.string.toCamelCase = function(str) {
-  return String(str).replace(/\-([a-z])/g, function(all, match) {
-    return match.toUpperCase();
-  });
-};
-goog.string.toSelectorCase = function(str) {
-  return String(str).replace(/([A-Z])/g, "-$1").toLowerCase();
-};
-goog.string.toTitleCase = function(str, opt_delimiters) {
-  var delimiters = goog.isString(opt_delimiters) ? goog.string.regExpEscape(opt_delimiters) : "\\s";
-  delimiters = delimiters ? "|[" + delimiters + "]+" : "";
-  var regexp = new RegExp("(^" + delimiters + ")([a-z])", "g");
-  return str.replace(regexp, function(all, p1, p2) {
-    return p1 + p2.toUpperCase();
-  });
-};
-goog.string.capitalize = function(str) {
-  return String(str.charAt(0)).toUpperCase() + String(str.substr(1)).toLowerCase();
-};
-goog.string.parseInt = function(value) {
-  if (isFinite(value)) {
-    value = String(value);
-  }
-  if (goog.isString(value)) {
-    return/^\s*-?0x/i.test(value) ? parseInt(value, 16) : parseInt(value, 10);
-  }
-  return NaN;
-};
-goog.string.splitLimit = function(str, separator, limit) {
-  var parts = str.split(separator);
-  var returnVal = [];
-  while (limit > 0 && parts.length) {
-    returnVal.push(parts.shift());
-    limit--;
-  }
-  if (parts.length) {
-    returnVal.push(parts.join(separator));
-  }
-  return returnVal;
-};
-goog.string.editDistance = function(a, b) {
-  var v0 = [];
-  var v1 = [];
-  if (a == b) {
-    return 0;
-  }
-  if (!a.length || !b.length) {
-    return Math.max(a.length, b.length);
-  }
-  for (var i = 0;i < b.length + 1;i++) {
-    v0[i] = i;
-  }
-  for (var i = 0;i < a.length;i++) {
-    v1[0] = i + 1;
-    for (var j = 0;j < b.length;j++) {
-      var cost = a[i] != b[j];
-      v1[j + 1] = Math.min(v1[j] + 1, v0[j + 1] + 1, v0[j] + cost);
-    }
-    for (var j = 0;j < v0.length;j++) {
-      v0[j] = v1[j];
-    }
-  }
-  return v1[b.length];
-};
-goog.provide("goog.labs.userAgent.util");
-goog.require("goog.string");
-goog.labs.userAgent.util.getNativeUserAgentString_ = function() {
-  var navigator = goog.labs.userAgent.util.getNavigator_();
-  if (navigator) {
-    var userAgent = navigator.userAgent;
-    if (userAgent) {
-      return userAgent;
-    }
-  }
-  return "";
-};
-goog.labs.userAgent.util.getNavigator_ = function() {
-  return goog.global.navigator;
-};
-goog.labs.userAgent.util.userAgent_ = goog.labs.userAgent.util.getNativeUserAgentString_();
-goog.labs.userAgent.util.setUserAgent = function(opt_userAgent) {
-  goog.labs.userAgent.util.userAgent_ = opt_userAgent || goog.labs.userAgent.util.getNativeUserAgentString_();
-};
-goog.labs.userAgent.util.getUserAgent = function() {
-  return goog.labs.userAgent.util.userAgent_;
-};
-goog.labs.userAgent.util.matchUserAgent = function(str) {
-  var userAgent = goog.labs.userAgent.util.getUserAgent();
-  return goog.string.contains(userAgent, str);
-};
-goog.labs.userAgent.util.matchUserAgentIgnoreCase = function(str) {
-  var userAgent = goog.labs.userAgent.util.getUserAgent();
-  return goog.string.caseInsensitiveContains(userAgent, str);
-};
-goog.labs.userAgent.util.extractVersionTuples = function(userAgent) {
-  var versionRegExp = new RegExp("(\\w[\\w ]+)" + "/" + "([^\\s]+)" + "\\s*" + "(?:\\((.*?)\\))?", "g");
-  var data = [];
-  var match;
-  while (match = versionRegExp.exec(userAgent)) {
-    data.push([match[1], match[2], match[3] || undefined]);
-  }
-  return data;
-};
-goog.provide("goog.labs.userAgent.platform");
-goog.require("goog.labs.userAgent.util");
-goog.require("goog.string");
-goog.labs.userAgent.platform.isAndroid = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Android");
-};
-goog.labs.userAgent.platform.isIpod = function() {
-  return goog.labs.userAgent.util.matchUserAgent("iPod");
-};
-goog.labs.userAgent.platform.isIphone = function() {
-  return goog.labs.userAgent.util.matchUserAgent("iPhone") && !goog.labs.userAgent.util.matchUserAgent("iPod") && !goog.labs.userAgent.util.matchUserAgent("iPad");
-};
-goog.labs.userAgent.platform.isIpad = function() {
-  return goog.labs.userAgent.util.matchUserAgent("iPad");
-};
-goog.labs.userAgent.platform.isIos = function() {
-  return goog.labs.userAgent.platform.isIphone() || goog.labs.userAgent.platform.isIpad() || goog.labs.userAgent.platform.isIpod();
-};
-goog.labs.userAgent.platform.isMacintosh = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Macintosh");
-};
-goog.labs.userAgent.platform.isLinux = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Linux");
-};
-goog.labs.userAgent.platform.isWindows = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Windows");
-};
-goog.labs.userAgent.platform.isChromeOS = function() {
-  return goog.labs.userAgent.util.matchUserAgent("CrOS");
-};
-goog.labs.userAgent.platform.getVersion = function() {
-  var userAgentString = goog.labs.userAgent.util.getUserAgent();
-  var version = "", re;
-  if (goog.labs.userAgent.platform.isWindows()) {
-    re = /Windows (?:NT|Phone) ([0-9.]+)/;
-    var match = re.exec(userAgentString);
-    if (match) {
-      version = match[1];
-    } else {
-      version = "0.0";
-    }
-  } else {
-    if (goog.labs.userAgent.platform.isIos()) {
-      re = /(?:iPhone|iPod|iPad|CPU)\s+OS\s+(\S+)/;
-      var match = re.exec(userAgentString);
-      version = match && match[1].replace(/_/g, ".");
-    } else {
-      if (goog.labs.userAgent.platform.isMacintosh()) {
-        re = /Mac OS X ([0-9_.]+)/;
-        var match = re.exec(userAgentString);
-        version = match ? match[1].replace(/_/g, ".") : "10";
-      } else {
-        if (goog.labs.userAgent.platform.isAndroid()) {
-          re = /Android\s+([^\);]+)(\)|;)/;
-          var match = re.exec(userAgentString);
-          version = match && match[1];
-        } else {
-          if (goog.labs.userAgent.platform.isChromeOS()) {
-            re = /(?:CrOS\s+(?:i686|x86_64)\s+([0-9.]+))/;
-            var match = re.exec(userAgentString);
-            version = match && match[1];
-          }
-        }
-      }
-    }
-  }
-  return version || "";
-};
-goog.labs.userAgent.platform.isVersionOrHigher = function(version) {
-  return goog.string.compareVersions(goog.labs.userAgent.platform.getVersion(), version) >= 0;
-};
-goog.provide("goog.crypt.Hash");
-goog.crypt.Hash = function() {
-  this.blockSize = -1;
-};
-goog.crypt.Hash.prototype.reset = goog.abstractMethod;
-goog.crypt.Hash.prototype.update = goog.abstractMethod;
-goog.crypt.Hash.prototype.digest = goog.abstractMethod;
-goog.provide("goog.crypt.Sha1");
-goog.require("goog.crypt.Hash");
-goog.crypt.Sha1 = function() {
-  goog.crypt.Sha1.base(this, "constructor");
-  this.blockSize = 512 / 8;
-  this.chain_ = [];
-  this.buf_ = [];
-  this.W_ = [];
-  this.pad_ = [];
-  this.pad_[0] = 128;
-  for (var i = 1;i < this.blockSize;++i) {
-    this.pad_[i] = 0;
-  }
-  this.inbuf_ = 0;
-  this.total_ = 0;
-  this.reset();
-};
-goog.inherits(goog.crypt.Sha1, goog.crypt.Hash);
-goog.crypt.Sha1.prototype.reset = function() {
-  this.chain_[0] = 1732584193;
-  this.chain_[1] = 4023233417;
-  this.chain_[2] = 2562383102;
-  this.chain_[3] = 271733878;
-  this.chain_[4] = 3285377520;
-  this.inbuf_ = 0;
-  this.total_ = 0;
-};
-goog.crypt.Sha1.prototype.compress_ = function(buf, opt_offset) {
-  if (!opt_offset) {
-    opt_offset = 0;
-  }
-  var W = this.W_;
-  if (goog.isString(buf)) {
-    for (var i = 0;i < 16;i++) {
-      W[i] = buf.charCodeAt(opt_offset) << 24 | buf.charCodeAt(opt_offset + 1) << 16 | buf.charCodeAt(opt_offset + 2) << 8 | buf.charCodeAt(opt_offset + 3);
-      opt_offset += 4;
-    }
-  } else {
-    for (var i = 0;i < 16;i++) {
-      W[i] = buf[opt_offset] << 24 | buf[opt_offset + 1] << 16 | buf[opt_offset + 2] << 8 | buf[opt_offset + 3];
-      opt_offset += 4;
-    }
-  }
-  for (var i = 16;i < 80;i++) {
-    var t = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16];
-    W[i] = (t << 1 | t >>> 31) & 4294967295;
-  }
-  var a = this.chain_[0];
-  var b = this.chain_[1];
-  var c = this.chain_[2];
-  var d = this.chain_[3];
-  var e = this.chain_[4];
-  var f, k;
-  for (var i = 0;i < 80;i++) {
-    if (i < 40) {
-      if (i < 20) {
-        f = d ^ b & (c ^ d);
-        k = 1518500249;
-      } else {
-        f = b ^ c ^ d;
-        k = 1859775393;
-      }
-    } else {
-      if (i < 60) {
-        f = b & c | d & (b | c);
-        k = 2400959708;
-      } else {
-        f = b ^ c ^ d;
-        k = 3395469782;
-      }
-    }
-    var t = (a << 5 | a >>> 27) + f + e + k + W[i] & 4294967295;
-    e = d;
-    d = c;
-    c = (b << 30 | b >>> 2) & 4294967295;
-    b = a;
-    a = t;
-  }
-  this.chain_[0] = this.chain_[0] + a & 4294967295;
-  this.chain_[1] = this.chain_[1] + b & 4294967295;
-  this.chain_[2] = this.chain_[2] + c & 4294967295;
-  this.chain_[3] = this.chain_[3] + d & 4294967295;
-  this.chain_[4] = this.chain_[4] + e & 4294967295;
-};
-goog.crypt.Sha1.prototype.update = function(bytes, opt_length) {
-  if (bytes == null) {
-    return;
-  }
-  if (!goog.isDef(opt_length)) {
-    opt_length = bytes.length;
-  }
-  var lengthMinusBlock = opt_length - this.blockSize;
-  var n = 0;
-  var buf = this.buf_;
-  var inbuf = this.inbuf_;
-  while (n < opt_length) {
-    if (inbuf == 0) {
-      while (n <= lengthMinusBlock) {
-        this.compress_(bytes, n);
-        n += this.blockSize;
-      }
-    }
-    if (goog.isString(bytes)) {
-      while (n < opt_length) {
-        buf[inbuf] = bytes.charCodeAt(n);
-        ++inbuf;
-        ++n;
-        if (inbuf == this.blockSize) {
-          this.compress_(buf);
-          inbuf = 0;
-          break;
-        }
-      }
-    } else {
-      while (n < opt_length) {
-        buf[inbuf] = bytes[n];
-        ++inbuf;
-        ++n;
-        if (inbuf == this.blockSize) {
-          this.compress_(buf);
-          inbuf = 0;
-          break;
-        }
-      }
-    }
-  }
-  this.inbuf_ = inbuf;
-  this.total_ += opt_length;
-};
-goog.crypt.Sha1.prototype.digest = function() {
-  var digest = [];
-  var totalBits = this.total_ * 8;
-  if (this.inbuf_ < 56) {
-    this.update(this.pad_, 56 - this.inbuf_);
-  } else {
-    this.update(this.pad_, this.blockSize - (this.inbuf_ - 56));
-  }
-  for (var i = this.blockSize - 1;i >= 56;i--) {
-    this.buf_[i] = totalBits & 255;
-    totalBits /= 256;
-  }
-  this.compress_(this.buf_);
-  var n = 0;
-  for (var i = 0;i < 5;i++) {
-    for (var j = 24;j >= 0;j -= 8) {
-      digest[n] = this.chain_[i] >> j & 255;
-      ++n;
-    }
-  }
-  return digest;
-};
-goog.provide("goog.asserts");
-goog.provide("goog.asserts.AssertionError");
-goog.require("goog.debug.Error");
-goog.require("goog.dom.NodeType");
-goog.require("goog.string");
-goog.define("goog.asserts.ENABLE_ASSERTS", goog.DEBUG);
-goog.asserts.AssertionError = function(messagePattern, messageArgs) {
-  messageArgs.unshift(messagePattern);
-  goog.debug.Error.call(this, goog.string.subs.apply(null, messageArgs));
-  messageArgs.shift();
-  this.messagePattern = messagePattern;
-};
-goog.inherits(goog.asserts.AssertionError, goog.debug.Error);
-goog.asserts.AssertionError.prototype.name = "AssertionError";
-goog.asserts.DEFAULT_ERROR_HANDLER = function(e) {
-  throw e;
-};
-goog.asserts.errorHandler_ = goog.asserts.DEFAULT_ERROR_HANDLER;
-goog.asserts.doAssertFailure_ = function(defaultMessage, defaultArgs, givenMessage, givenArgs) {
-  var message = "Assertion failed";
-  if (givenMessage) {
-    message += ": " + givenMessage;
-    var args = givenArgs;
-  } else {
-    if (defaultMessage) {
-      message += ": " + defaultMessage;
-      args = defaultArgs;
-    }
-  }
-  var e = new goog.asserts.AssertionError("" + message, args || []);
-  goog.asserts.errorHandler_(e);
-};
-goog.asserts.setErrorHandler = function(errorHandler) {
-  if (goog.asserts.ENABLE_ASSERTS) {
-    goog.asserts.errorHandler_ = errorHandler;
-  }
-};
-goog.asserts.assert = function(condition, opt_message, var_args) {
-  if (goog.asserts.ENABLE_ASSERTS && !condition) {
-    goog.asserts.doAssertFailure_("", null, opt_message, Array.prototype.slice.call(arguments, 2));
-  }
-  return condition;
-};
-goog.asserts.fail = function(opt_message, var_args) {
-  if (goog.asserts.ENABLE_ASSERTS) {
-    goog.asserts.errorHandler_(new goog.asserts.AssertionError("Failure" + (opt_message ? ": " + opt_message : ""), Array.prototype.slice.call(arguments, 1)));
-  }
-};
-goog.asserts.assertNumber = function(value, opt_message, var_args) {
-  if (goog.asserts.ENABLE_ASSERTS && !goog.isNumber(value)) {
-    goog.asserts.doAssertFailure_("Expected number but got %s: %s.", [goog.typeOf(value), value], opt_message, Array.prototype.slice.call(arguments, 2));
-  }
-  return(value);
-};
-goog.asserts.assertString = function(value, opt_message, var_args) {
-  if (goog.asserts.ENABLE_ASSERTS && !goog.isString(value)) {
-    goog.asserts.doAssertFailure_("Expected string but got %s: %s.", [goog.typeOf(value), value], opt_message, Array.prototype.slice.call(arguments, 2));
-  }
-  return(value);
-};
-goog.asserts.assertFunction = function(value, opt_message, var_args) {
-  if (goog.asserts.ENABLE_ASSERTS && !goog.isFunction(value)) {
-    goog.asserts.doAssertFailure_("Expected function but got %s: %s.", [goog.typeOf(value), value], opt_message, Array.prototype.slice.call(arguments, 2));
-  }
-  return(value);
-};
-goog.asserts.assertObject = function(value, opt_message, var_args) {
-  if (goog.asserts.ENABLE_ASSERTS && !goog.isObject(value)) {
-    goog.asserts.doAssertFailure_("Expected object but got %s: %s.", [goog.typeOf(value), value], opt_message, Array.prototype.slice.call(arguments, 2));
-  }
-  return(value);
-};
-goog.asserts.assertArray = function(value, opt_message, var_args) {
-  if (goog.asserts.ENABLE_ASSERTS && !goog.isArray(value)) {
-    goog.asserts.doAssertFailure_("Expected array but got %s: %s.", [goog.typeOf(value), value], opt_message, Array.prototype.slice.call(arguments, 2));
-  }
-  return(value);
-};
-goog.asserts.assertBoolean = function(value, opt_message, var_args) {
-  if (goog.asserts.ENABLE_ASSERTS && !goog.isBoolean(value)) {
-    goog.asserts.doAssertFailure_("Expected boolean but got %s: %s.", [goog.typeOf(value), value], opt_message, Array.prototype.slice.call(arguments, 2));
-  }
-  return(value);
-};
-goog.asserts.assertElement = function(value, opt_message, var_args) {
-  if (goog.asserts.ENABLE_ASSERTS && (!goog.isObject(value) || value.nodeType != goog.dom.NodeType.ELEMENT)) {
-    goog.asserts.doAssertFailure_("Expected Element but got %s: %s.", [goog.typeOf(value), value], opt_message, Array.prototype.slice.call(arguments, 2));
-  }
-  return(value);
-};
-goog.asserts.assertInstanceof = function(value, type, opt_message, var_args) {
-  if (goog.asserts.ENABLE_ASSERTS && !(value instanceof type)) {
-    goog.asserts.doAssertFailure_("Expected instanceof %s but got %s.", [goog.asserts.getType_(type), goog.asserts.getType_(value)], opt_message, Array.prototype.slice.call(arguments, 3));
-  }
-  return value;
-};
-goog.asserts.assertObjectPrototypeIsIntact = function() {
-  for (var key in Object.prototype) {
-    goog.asserts.fail(key + " should not be enumerable in Object.prototype.");
-  }
-};
-goog.asserts.getType_ = function(value) {
-  if (value instanceof Function) {
-    return value.displayName || value.name || "unknown type name";
-  } else {
-    if (value instanceof Object) {
-      return value.constructor.displayName || value.constructor.name || Object.prototype.toString.call(value);
-    } else {
-      return value === null ? "null" : typeof value;
-    }
-  }
-};
-goog.provide("goog.array");
-goog.provide("goog.array.ArrayLike");
-goog.require("goog.asserts");
-goog.define("goog.NATIVE_ARRAY_PROTOTYPES", goog.TRUSTED_SITE);
-goog.define("goog.array.ASSUME_NATIVE_FUNCTIONS", false);
-goog.array.ArrayLike;
-goog.array.peek = function(array) {
-  return array[array.length - 1];
-};
-goog.array.last = goog.array.peek;
-goog.array.ARRAY_PROTOTYPE_ = Array.prototype;
-goog.array.indexOf = goog.NATIVE_ARRAY_PROTOTYPES && (goog.array.ASSUME_NATIVE_FUNCTIONS || goog.array.ARRAY_PROTOTYPE_.indexOf) ? function(arr, obj, opt_fromIndex) {
-  goog.asserts.assert(arr.length != null);
-  return goog.array.ARRAY_PROTOTYPE_.indexOf.call(arr, obj, opt_fromIndex);
-} : function(arr, obj, opt_fromIndex) {
-  var fromIndex = opt_fromIndex == null ? 0 : opt_fromIndex < 0 ? Math.max(0, arr.length + opt_fromIndex) : opt_fromIndex;
-  if (goog.isString(arr)) {
-    if (!goog.isString(obj) || obj.length != 1) {
-      return-1;
-    }
-    return arr.indexOf(obj, fromIndex);
-  }
-  for (var i = fromIndex;i < arr.length;i++) {
-    if (i in arr && arr[i] === obj) {
-      return i;
-    }
-  }
-  return-1;
-};
-goog.array.lastIndexOf = goog.NATIVE_ARRAY_PROTOTYPES && (goog.array.ASSUME_NATIVE_FUNCTIONS || goog.array.ARRAY_PROTOTYPE_.lastIndexOf) ? function(arr, obj, opt_fromIndex) {
-  goog.asserts.assert(arr.length != null);
-  var fromIndex = opt_fromIndex == null ? arr.length - 1 : opt_fromIndex;
-  return goog.array.ARRAY_PROTOTYPE_.lastIndexOf.call(arr, obj, fromIndex);
-} : function(arr, obj, opt_fromIndex) {
-  var fromIndex = opt_fromIndex == null ? arr.length - 1 : opt_fromIndex;
-  if (fromIndex < 0) {
-    fromIndex = Math.max(0, arr.length + fromIndex);
-  }
-  if (goog.isString(arr)) {
-    if (!goog.isString(obj) || obj.length != 1) {
-      return-1;
-    }
-    return arr.lastIndexOf(obj, fromIndex);
-  }
-  for (var i = fromIndex;i >= 0;i--) {
-    if (i in arr && arr[i] === obj) {
-      return i;
-    }
-  }
-  return-1;
-};
-goog.array.forEach = goog.NATIVE_ARRAY_PROTOTYPES && (goog.array.ASSUME_NATIVE_FUNCTIONS || goog.array.ARRAY_PROTOTYPE_.forEach) ? function(arr, f, opt_obj) {
-  goog.asserts.assert(arr.length != null);
-  goog.array.ARRAY_PROTOTYPE_.forEach.call(arr, f, opt_obj);
-} : function(arr, f, opt_obj) {
-  var l = arr.length;
-  var arr2 = goog.isString(arr) ? arr.split("") : arr;
-  for (var i = 0;i < l;i++) {
-    if (i in arr2) {
-      f.call(opt_obj, arr2[i], i, arr);
-    }
-  }
-};
-goog.array.forEachRight = function(arr, f, opt_obj) {
-  var l = arr.length;
-  var arr2 = goog.isString(arr) ? arr.split("") : arr;
-  for (var i = l - 1;i >= 0;--i) {
-    if (i in arr2) {
-      f.call(opt_obj, arr2[i], i, arr);
-    }
-  }
-};
-goog.array.filter = goog.NATIVE_ARRAY_PROTOTYPES && (goog.array.ASSUME_NATIVE_FUNCTIONS || goog.array.ARRAY_PROTOTYPE_.filter) ? function(arr, f, opt_obj) {
-  goog.asserts.assert(arr.length != null);
-  return goog.array.ARRAY_PROTOTYPE_.filter.call(arr, f, opt_obj);
-} : function(arr, f, opt_obj) {
-  var l = arr.length;
-  var res = [];
-  var resLength = 0;
-  var arr2 = goog.isString(arr) ? arr.split("") : arr;
-  for (var i = 0;i < l;i++) {
-    if (i in arr2) {
-      var val = arr2[i];
-      if (f.call(opt_obj, val, i, arr)) {
-        res[resLength++] = val;
-      }
-    }
-  }
-  return res;
-};
-goog.array.map = goog.NATIVE_ARRAY_PROTOTYPES && (goog.array.ASSUME_NATIVE_FUNCTIONS || goog.array.ARRAY_PROTOTYPE_.map) ? function(arr, f, opt_obj) {
-  goog.asserts.assert(arr.length != null);
-  return goog.array.ARRAY_PROTOTYPE_.map.call(arr, f, opt_obj);
-} : function(arr, f, opt_obj) {
-  var l = arr.length;
-  var res = new Array(l);
-  var arr2 = goog.isString(arr) ? arr.split("") : arr;
-  for (var i = 0;i < l;i++) {
-    if (i in arr2) {
-      res[i] = f.call(opt_obj, arr2[i], i, arr);
-    }
-  }
-  return res;
-};
-goog.array.reduce = goog.NATIVE_ARRAY_PROTOTYPES && (goog.array.ASSUME_NATIVE_FUNCTIONS || goog.array.ARRAY_PROTOTYPE_.reduce) ? function(arr, f, val, opt_obj) {
-  goog.asserts.assert(arr.length != null);
-  var params = [];
-  for (var i = 1, l = arguments.length;i < l;i++) {
-    params.push(arguments[i]);
-  }
-  if (opt_obj) {
-    params[0] = goog.bind(f, opt_obj);
-  }
-  return goog.array.ARRAY_PROTOTYPE_.reduce.apply(arr, params);
-} : function(arr, f, val, opt_obj) {
-  var rval = val;
-  goog.array.forEach(arr, function(val, index) {
-    rval = f.call(opt_obj, rval, val, index, arr);
-  });
-  return rval;
-};
-goog.array.reduceRight = goog.NATIVE_ARRAY_PROTOTYPES && (goog.array.ASSUME_NATIVE_FUNCTIONS || goog.array.ARRAY_PROTOTYPE_.reduceRight) ? function(arr, f, val, opt_obj) {
-  goog.asserts.assert(arr.length != null);
-  if (opt_obj) {
-    f = goog.bind(f, opt_obj);
-  }
-  return goog.array.ARRAY_PROTOTYPE_.reduceRight.call(arr, f, val);
-} : function(arr, f, val, opt_obj) {
-  var rval = val;
-  goog.array.forEachRight(arr, function(val, index) {
-    rval = f.call(opt_obj, rval, val, index, arr);
-  });
-  return rval;
-};
-goog.array.some = goog.NATIVE_ARRAY_PROTOTYPES && (goog.array.ASSUME_NATIVE_FUNCTIONS || goog.array.ARRAY_PROTOTYPE_.some) ? function(arr, f, opt_obj) {
-  goog.asserts.assert(arr.length != null);
-  return goog.array.ARRAY_PROTOTYPE_.some.call(arr, f, opt_obj);
-} : function(arr, f, opt_obj) {
-  var l = arr.length;
-  var arr2 = goog.isString(arr) ? arr.split("") : arr;
-  for (var i = 0;i < l;i++) {
-    if (i in arr2 && f.call(opt_obj, arr2[i], i, arr)) {
-      return true;
-    }
-  }
-  return false;
-};
-goog.array.every = goog.NATIVE_ARRAY_PROTOTYPES && (goog.array.ASSUME_NATIVE_FUNCTIONS || goog.array.ARRAY_PROTOTYPE_.every) ? function(arr, f, opt_obj) {
-  goog.asserts.assert(arr.length != null);
-  return goog.array.ARRAY_PROTOTYPE_.every.call(arr, f, opt_obj);
-} : function(arr, f, opt_obj) {
-  var l = arr.length;
-  var arr2 = goog.isString(arr) ? arr.split("") : arr;
-  for (var i = 0;i < l;i++) {
-    if (i in arr2 && !f.call(opt_obj, arr2[i], i, arr)) {
-      return false;
-    }
-  }
-  return true;
-};
-goog.array.count = function(arr, f, opt_obj) {
-  var count = 0;
-  goog.array.forEach(arr, function(element, index, arr) {
-    if (f.call(opt_obj, element, index, arr)) {
-      ++count;
-    }
-  }, opt_obj);
-  return count;
-};
-goog.array.find = function(arr, f, opt_obj) {
-  var i = goog.array.findIndex(arr, f, opt_obj);
-  return i < 0 ? null : goog.isString(arr) ? arr.charAt(i) : arr[i];
-};
-goog.array.findIndex = function(arr, f, opt_obj) {
-  var l = arr.length;
-  var arr2 = goog.isString(arr) ? arr.split("") : arr;
-  for (var i = 0;i < l;i++) {
-    if (i in arr2 && f.call(opt_obj, arr2[i], i, arr)) {
-      return i;
-    }
-  }
-  return-1;
-};
-goog.array.findRight = function(arr, f, opt_obj) {
-  var i = goog.array.findIndexRight(arr, f, opt_obj);
-  return i < 0 ? null : goog.isString(arr) ? arr.charAt(i) : arr[i];
-};
-goog.array.findIndexRight = function(arr, f, opt_obj) {
-  var l = arr.length;
-  var arr2 = goog.isString(arr) ? arr.split("") : arr;
-  for (var i = l - 1;i >= 0;i--) {
-    if (i in arr2 && f.call(opt_obj, arr2[i], i, arr)) {
-      return i;
-    }
-  }
-  return-1;
-};
-goog.array.contains = function(arr, obj) {
-  return goog.array.indexOf(arr, obj) >= 0;
-};
-goog.array.isEmpty = function(arr) {
-  return arr.length == 0;
-};
-goog.array.clear = function(arr) {
-  if (!goog.isArray(arr)) {
-    for (var i = arr.length - 1;i >= 0;i--) {
-      delete arr[i];
-    }
-  }
-  arr.length = 0;
-};
-goog.array.insert = function(arr, obj) {
-  if (!goog.array.contains(arr, obj)) {
-    arr.push(obj);
-  }
-};
-goog.array.insertAt = function(arr, obj, opt_i) {
-  goog.array.splice(arr, opt_i, 0, obj);
-};
-goog.array.insertArrayAt = function(arr, elementsToAdd, opt_i) {
-  goog.partial(goog.array.splice, arr, opt_i, 0).apply(null, elementsToAdd);
-};
-goog.array.insertBefore = function(arr, obj, opt_obj2) {
-  var i;
-  if (arguments.length == 2 || (i = goog.array.indexOf(arr, opt_obj2)) < 0) {
-    arr.push(obj);
-  } else {
-    goog.array.insertAt(arr, obj, i);
-  }
-};
-goog.array.remove = function(arr, obj) {
-  var i = goog.array.indexOf(arr, obj);
-  var rv;
-  if (rv = i >= 0) {
-    goog.array.removeAt(arr, i);
-  }
-  return rv;
-};
-goog.array.removeAt = function(arr, i) {
-  goog.asserts.assert(arr.length != null);
-  return goog.array.ARRAY_PROTOTYPE_.splice.call(arr, i, 1).length == 1;
-};
-goog.array.removeIf = function(arr, f, opt_obj) {
-  var i = goog.array.findIndex(arr, f, opt_obj);
-  if (i >= 0) {
-    goog.array.removeAt(arr, i);
-    return true;
-  }
-  return false;
-};
-goog.array.removeAllIf = function(arr, f, opt_obj) {
-  var removedCount = 0;
-  goog.array.forEachRight(arr, function(val, index) {
-    if (f.call(opt_obj, val, index, arr)) {
-      if (goog.array.removeAt(arr, index)) {
-        removedCount++;
-      }
-    }
-  });
-  return removedCount;
-};
-goog.array.concat = function(var_args) {
-  return goog.array.ARRAY_PROTOTYPE_.concat.apply(goog.array.ARRAY_PROTOTYPE_, arguments);
-};
-goog.array.join = function(var_args) {
-  return goog.array.ARRAY_PROTOTYPE_.concat.apply(goog.array.ARRAY_PROTOTYPE_, arguments);
-};
-goog.array.toArray = function(object) {
-  var length = object.length;
-  if (length > 0) {
-    var rv = new Array(length);
-    for (var i = 0;i < length;i++) {
-      rv[i] = object[i];
-    }
-    return rv;
-  }
-  return[];
-};
-goog.array.clone = goog.array.toArray;
-goog.array.extend = function(arr1, var_args) {
-  for (var i = 1;i < arguments.length;i++) {
-    var arr2 = arguments[i];
-    if (goog.isArrayLike(arr2)) {
-      var len1 = arr1.length || 0;
-      var len2 = arr2.length || 0;
-      arr1.length = len1 + len2;
-      for (var j = 0;j < len2;j++) {
-        arr1[len1 + j] = arr2[j];
-      }
-    } else {
-      arr1.push(arr2);
-    }
-  }
-};
-goog.array.splice = function(arr, index, howMany, var_args) {
-  goog.asserts.assert(arr.length != null);
-  return goog.array.ARRAY_PROTOTYPE_.splice.apply(arr, goog.array.slice(arguments, 1));
-};
-goog.array.slice = function(arr, start, opt_end) {
-  goog.asserts.assert(arr.length != null);
-  if (arguments.length <= 2) {
-    return goog.array.ARRAY_PROTOTYPE_.slice.call(arr, start);
-  } else {
-    return goog.array.ARRAY_PROTOTYPE_.slice.call(arr, start, opt_end);
-  }
-};
-goog.array.removeDuplicates = function(arr, opt_rv, opt_hashFn) {
-  var returnArray = opt_rv || arr;
-  var defaultHashFn = function(item) {
-    return goog.isObject(current) ? "o" + goog.getUid(current) : (typeof current).charAt(0) + current;
-  };
-  var hashFn = opt_hashFn || defaultHashFn;
-  var seen = {}, cursorInsert = 0, cursorRead = 0;
-  while (cursorRead < arr.length) {
-    var current = arr[cursorRead++];
-    var key = hashFn(current);
-    if (!Object.prototype.hasOwnProperty.call(seen, key)) {
-      seen[key] = true;
-      returnArray[cursorInsert++] = current;
-    }
-  }
-  returnArray.length = cursorInsert;
-};
-goog.array.binarySearch = function(arr, target, opt_compareFn) {
-  return goog.array.binarySearch_(arr, opt_compareFn || goog.array.defaultCompare, false, target);
-};
-goog.array.binarySelect = function(arr, evaluator, opt_obj) {
-  return goog.array.binarySearch_(arr, evaluator, true, undefined, opt_obj);
-};
-goog.array.binarySearch_ = function(arr, compareFn, isEvaluator, opt_target, opt_selfObj) {
-  var left = 0;
-  var right = arr.length;
-  var found;
-  while (left < right) {
-    var middle = left + right >> 1;
-    var compareResult;
-    if (isEvaluator) {
-      compareResult = compareFn.call(opt_selfObj, arr[middle], middle, arr);
-    } else {
-      compareResult = compareFn(opt_target, arr[middle]);
-    }
-    if (compareResult > 0) {
-      left = middle + 1;
-    } else {
-      right = middle;
-      found = !compareResult;
-    }
-  }
-  return found ? left : ~left;
-};
-goog.array.sort = function(arr, opt_compareFn) {
-  arr.sort(opt_compareFn || goog.array.defaultCompare);
-};
-goog.array.stableSort = function(arr, opt_compareFn) {
-  for (var i = 0;i < arr.length;i++) {
-    arr[i] = {index:i, value:arr[i]};
-  }
-  var valueCompareFn = opt_compareFn || goog.array.defaultCompare;
-  function stableCompareFn(obj1, obj2) {
-    return valueCompareFn(obj1.value, obj2.value) || obj1.index - obj2.index;
-  }
-  goog.array.sort(arr, stableCompareFn);
-  for (var i = 0;i < arr.length;i++) {
-    arr[i] = arr[i].value;
-  }
-};
-goog.array.sortByKey = function(arr, keyFn, opt_compareFn) {
-  var keyCompareFn = opt_compareFn || goog.array.defaultCompare;
-  goog.array.sort(arr, function(a, b) {
-    return keyCompareFn(keyFn(a), keyFn(b));
-  });
-};
-goog.array.sortObjectsByKey = function(arr, key, opt_compareFn) {
-  goog.array.sortByKey(arr, function(obj) {
-    return obj[key];
-  }, opt_compareFn);
-};
-goog.array.isSorted = function(arr, opt_compareFn, opt_strict) {
-  var compare = opt_compareFn || goog.array.defaultCompare;
-  for (var i = 1;i < arr.length;i++) {
-    var compareResult = compare(arr[i - 1], arr[i]);
-    if (compareResult > 0 || compareResult == 0 && opt_strict) {
-      return false;
-    }
-  }
-  return true;
-};
-goog.array.equals = function(arr1, arr2, opt_equalsFn) {
-  if (!goog.isArrayLike(arr1) || !goog.isArrayLike(arr2) || arr1.length != arr2.length) {
-    return false;
-  }
-  var l = arr1.length;
-  var equalsFn = opt_equalsFn || goog.array.defaultCompareEquality;
-  for (var i = 0;i < l;i++) {
-    if (!equalsFn(arr1[i], arr2[i])) {
-      return false;
-    }
-  }
-  return true;
-};
-goog.array.compare3 = function(arr1, arr2, opt_compareFn) {
-  var compare = opt_compareFn || goog.array.defaultCompare;
-  var l = Math.min(arr1.length, arr2.length);
-  for (var i = 0;i < l;i++) {
-    var result = compare(arr1[i], arr2[i]);
-    if (result != 0) {
-      return result;
-    }
-  }
-  return goog.array.defaultCompare(arr1.length, arr2.length);
-};
-goog.array.defaultCompare = function(a, b) {
-  return a > b ? 1 : a < b ? -1 : 0;
-};
-goog.array.inverseDefaultCompare = function(a, b) {
-  return-goog.array.defaultCompare(a, b);
-};
-goog.array.defaultCompareEquality = function(a, b) {
-  return a === b;
-};
-goog.array.binaryInsert = function(array, value, opt_compareFn) {
-  var index = goog.array.binarySearch(array, value, opt_compareFn);
-  if (index < 0) {
-    goog.array.insertAt(array, value, -(index + 1));
-    return true;
-  }
-  return false;
-};
-goog.array.binaryRemove = function(array, value, opt_compareFn) {
-  var index = goog.array.binarySearch(array, value, opt_compareFn);
-  return index >= 0 ? goog.array.removeAt(array, index) : false;
-};
-goog.array.bucket = function(array, sorter, opt_obj) {
-  var buckets = {};
-  for (var i = 0;i < array.length;i++) {
-    var value = array[i];
-    var key = sorter.call(opt_obj, value, i, array);
-    if (goog.isDef(key)) {
-      var bucket = buckets[key] || (buckets[key] = []);
-      bucket.push(value);
-    }
-  }
-  return buckets;
-};
-goog.array.toObject = function(arr, keyFunc, opt_obj) {
-  var ret = {};
-  goog.array.forEach(arr, function(element, index) {
-    ret[keyFunc.call(opt_obj, element, index, arr)] = element;
-  });
-  return ret;
-};
-goog.array.range = function(startOrEnd, opt_end, opt_step) {
-  var array = [];
-  var start = 0;
-  var end = startOrEnd;
-  var step = opt_step || 1;
-  if (opt_end !== undefined) {
-    start = startOrEnd;
-    end = opt_end;
-  }
-  if (step * (end - start) < 0) {
-    return[];
-  }
-  if (step > 0) {
-    for (var i = start;i < end;i += step) {
-      array.push(i);
-    }
-  } else {
-    for (var i = start;i > end;i += step) {
-      array.push(i);
-    }
-  }
-  return array;
-};
-goog.array.repeat = function(value, n) {
-  var array = [];
-  for (var i = 0;i < n;i++) {
-    array[i] = value;
-  }
-  return array;
-};
-goog.array.flatten = function(var_args) {
-  var CHUNK_SIZE = 8192;
-  var result = [];
-  for (var i = 0;i < arguments.length;i++) {
-    var element = arguments[i];
-    if (goog.isArray(element)) {
-      for (var c = 0;c < element.length;c += CHUNK_SIZE) {
-        var chunk = goog.array.slice(element, c, c + CHUNK_SIZE);
-        var recurseResult = goog.array.flatten.apply(null, chunk);
-        for (var r = 0;r < recurseResult.length;r++) {
-          result.push(recurseResult[r]);
-        }
-      }
-    } else {
-      result.push(element);
-    }
-  }
-  return result;
-};
-goog.array.rotate = function(array, n) {
-  goog.asserts.assert(array.length != null);
-  if (array.length) {
-    n %= array.length;
-    if (n > 0) {
-      goog.array.ARRAY_PROTOTYPE_.unshift.apply(array, array.splice(-n, n));
-    } else {
-      if (n < 0) {
-        goog.array.ARRAY_PROTOTYPE_.push.apply(array, array.splice(0, -n));
-      }
-    }
-  }
-  return array;
-};
-goog.array.moveItem = function(arr, fromIndex, toIndex) {
-  goog.asserts.assert(fromIndex >= 0 && fromIndex < arr.length);
-  goog.asserts.assert(toIndex >= 0 && toIndex < arr.length);
-  var removedItems = goog.array.ARRAY_PROTOTYPE_.splice.call(arr, fromIndex, 1);
-  goog.array.ARRAY_PROTOTYPE_.splice.call(arr, toIndex, 0, removedItems[0]);
-};
-goog.array.zip = function(var_args) {
-  if (!arguments.length) {
-    return[];
-  }
-  var result = [];
-  for (var i = 0;true;i++) {
-    var value = [];
-    for (var j = 0;j < arguments.length;j++) {
-      var arr = arguments[j];
-      if (i >= arr.length) {
-        return result;
-      }
-      value.push(arr[i]);
-    }
-    result.push(value);
-  }
-};
-goog.array.shuffle = function(arr, opt_randFn) {
-  var randFn = opt_randFn || Math.random;
-  for (var i = arr.length - 1;i > 0;i--) {
-    var j = Math.floor(randFn() * (i + 1));
-    var tmp = arr[i];
-    arr[i] = arr[j];
-    arr[j] = tmp;
-  }
-};
-goog.array.copyByIndex = function(arr, index_arr) {
-  var result = [];
-  goog.array.forEach(index_arr, function(index) {
-    result.push(arr[index]);
-  });
-  return result;
-};
-goog.provide("goog.labs.userAgent.browser");
-goog.require("goog.array");
-goog.require("goog.labs.userAgent.util");
-goog.require("goog.object");
-goog.require("goog.string");
-goog.labs.userAgent.browser.matchOpera_ = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Opera") || goog.labs.userAgent.util.matchUserAgent("OPR");
-};
-goog.labs.userAgent.browser.matchIE_ = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Trident") || goog.labs.userAgent.util.matchUserAgent("MSIE");
-};
-goog.labs.userAgent.browser.matchFirefox_ = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Firefox");
-};
-goog.labs.userAgent.browser.matchSafari_ = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Safari") && !(goog.labs.userAgent.browser.matchChrome_() || goog.labs.userAgent.browser.matchCoast_() || goog.labs.userAgent.browser.matchOpera_() || goog.labs.userAgent.browser.isSilk() || goog.labs.userAgent.util.matchUserAgent("Android"));
-};
-goog.labs.userAgent.browser.matchCoast_ = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Coast");
-};
-goog.labs.userAgent.browser.matchIosWebview_ = function() {
-  return(goog.labs.userAgent.util.matchUserAgent("iPad") || goog.labs.userAgent.util.matchUserAgent("iPhone")) && !goog.labs.userAgent.browser.matchSafari_() && !goog.labs.userAgent.browser.matchChrome_() && !goog.labs.userAgent.browser.matchCoast_() && goog.labs.userAgent.util.matchUserAgent("AppleWebKit");
-};
-goog.labs.userAgent.browser.matchChrome_ = function() {
-  return(goog.labs.userAgent.util.matchUserAgent("Chrome") || goog.labs.userAgent.util.matchUserAgent("CriOS")) && !goog.labs.userAgent.browser.matchOpera_();
-};
-goog.labs.userAgent.browser.matchAndroidBrowser_ = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Android") && !(goog.labs.userAgent.browser.isChrome() || goog.labs.userAgent.browser.isFirefox() || goog.labs.userAgent.browser.isOpera() || goog.labs.userAgent.browser.isSilk());
-};
-goog.labs.userAgent.browser.isOpera = goog.labs.userAgent.browser.matchOpera_;
-goog.labs.userAgent.browser.isIE = goog.labs.userAgent.browser.matchIE_;
-goog.labs.userAgent.browser.isFirefox = goog.labs.userAgent.browser.matchFirefox_;
-goog.labs.userAgent.browser.isSafari = goog.labs.userAgent.browser.matchSafari_;
-goog.labs.userAgent.browser.isCoast = goog.labs.userAgent.browser.matchCoast_;
-goog.labs.userAgent.browser.isIosWebview = goog.labs.userAgent.browser.matchIosWebview_;
-goog.labs.userAgent.browser.isChrome = goog.labs.userAgent.browser.matchChrome_;
-goog.labs.userAgent.browser.isAndroidBrowser = goog.labs.userAgent.browser.matchAndroidBrowser_;
-goog.labs.userAgent.browser.isSilk = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Silk");
-};
-goog.labs.userAgent.browser.getVersion = function() {
-  var userAgentString = goog.labs.userAgent.util.getUserAgent();
-  if (goog.labs.userAgent.browser.isIE()) {
-    return goog.labs.userAgent.browser.getIEVersion_(userAgentString);
-  }
-  var versionTuples = goog.labs.userAgent.util.extractVersionTuples(userAgentString);
-  var versionMap = {};
-  goog.array.forEach(versionTuples, function(tuple) {
-    var key = tuple[0];
-    var value = tuple[1];
-    versionMap[key] = value;
-  });
-  var versionMapHasKey = goog.partial(goog.object.containsKey, versionMap);
-  function lookUpValueWithKeys(keys) {
-    var key = goog.array.find(keys, versionMapHasKey);
-    return versionMap[key] || "";
-  }
-  if (goog.labs.userAgent.browser.isOpera()) {
-    return lookUpValueWithKeys(["Version", "Opera", "OPR"]);
-  }
-  if (goog.labs.userAgent.browser.isChrome()) {
-    return lookUpValueWithKeys(["Chrome", "CriOS"]);
-  }
-  var tuple = versionTuples[2];
-  return tuple && tuple[1] || "";
-};
-goog.labs.userAgent.browser.isVersionOrHigher = function(version) {
-  return goog.string.compareVersions(goog.labs.userAgent.browser.getVersion(), version) >= 0;
-};
-goog.labs.userAgent.browser.getIEVersion_ = function(userAgent) {
-  var rv = /rv: *([\d\.]*)/.exec(userAgent);
-  if (rv && rv[1]) {
-    return rv[1];
-  }
-  var version = "";
-  var msie = /MSIE +([\d\.]+)/.exec(userAgent);
-  if (msie && msie[1]) {
-    var tridentVersion = /Trident\/(\d.\d)/.exec(userAgent);
-    if (msie[1] == "7.0") {
-      if (tridentVersion && tridentVersion[1]) {
-        switch(tridentVersion[1]) {
-          case "4.0":
-            version = "8.0";
-            break;
-          case "5.0":
-            version = "9.0";
-            break;
-          case "6.0":
-            version = "10.0";
-            break;
-          case "7.0":
-            version = "11.0";
-            break;
-        }
-      } else {
-        version = "7.0";
-      }
-    } else {
-      version = msie[1];
-    }
-  }
-  return version;
-};
-goog.provide("goog.labs.userAgent.engine");
-goog.require("goog.array");
-goog.require("goog.labs.userAgent.util");
-goog.require("goog.string");
-goog.labs.userAgent.engine.isPresto = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Presto");
-};
-goog.labs.userAgent.engine.isTrident = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Trident") || goog.labs.userAgent.util.matchUserAgent("MSIE");
-};
-goog.labs.userAgent.engine.isWebKit = function() {
-  return goog.labs.userAgent.util.matchUserAgentIgnoreCase("WebKit");
-};
-goog.labs.userAgent.engine.isGecko = function() {
-  return goog.labs.userAgent.util.matchUserAgent("Gecko") && !goog.labs.userAgent.engine.isWebKit() && !goog.labs.userAgent.engine.isTrident();
-};
-goog.labs.userAgent.engine.getVersion = function() {
-  var userAgentString = goog.labs.userAgent.util.getUserAgent();
-  if (userAgentString) {
-    var tuples = goog.labs.userAgent.util.extractVersionTuples(userAgentString);
-    var engineTuple = tuples[1];
-    if (engineTuple) {
-      if (engineTuple[0] == "Gecko") {
-        return goog.labs.userAgent.engine.getVersionForKey_(tuples, "Firefox");
-      }
-      return engineTuple[1];
-    }
-    var browserTuple = tuples[0];
-    var info;
-    if (browserTuple && (info = browserTuple[2])) {
-      var match = /Trident\/([^\s;]+)/.exec(info);
-      if (match) {
-        return match[1];
-      }
-    }
-  }
-  return "";
-};
-goog.labs.userAgent.engine.isVersionOrHigher = function(version) {
-  return goog.string.compareVersions(goog.labs.userAgent.engine.getVersion(), version) >= 0;
-};
-goog.labs.userAgent.engine.getVersionForKey_ = function(tuples, key) {
-  var pair = goog.array.find(tuples, function(pair) {
-    return key == pair[0];
-  });
-  return pair && pair[1] || "";
-};
-goog.provide("goog.crypt");
-goog.require("goog.array");
-goog.require("goog.asserts");
-goog.crypt.stringToByteArray = function(str) {
-  var output = [], p = 0;
-  for (var i = 0;i < str.length;i++) {
-    var c = str.charCodeAt(i);
-    while (c > 255) {
-      output[p++] = c & 255;
-      c >>= 8;
-    }
-    output[p++] = c;
-  }
-  return output;
-};
-goog.crypt.byteArrayToString = function(bytes) {
-  var CHUNK_SIZE = 8192;
-  if (bytes.length < CHUNK_SIZE) {
-    return String.fromCharCode.apply(null, bytes);
-  }
-  var str = "";
-  for (var i = 0;i < bytes.length;i += CHUNK_SIZE) {
-    var chunk = goog.array.slice(bytes, i, i + CHUNK_SIZE);
-    str += String.fromCharCode.apply(null, chunk);
-  }
-  return str;
-};
-goog.crypt.byteArrayToHex = function(array) {
-  return goog.array.map(array, function(numByte) {
-    var hexByte = numByte.toString(16);
-    return hexByte.length > 1 ? hexByte : "0" + hexByte;
-  }).join("");
-};
-goog.crypt.hexToByteArray = function(hexString) {
-  goog.asserts.assert(hexString.length % 2 == 0, "Key string length must be multiple of 2");
-  var arr = [];
-  for (var i = 0;i < hexString.length;i += 2) {
-    arr.push(parseInt(hexString.substring(i, i + 2), 16));
-  }
-  return arr;
-};
-goog.crypt.stringToUtf8ByteArray = function(str) {
-  str = str.replace(/\r\n/g, "\n");
-  var out = [], p = 0;
-  for (var i = 0;i < str.length;i++) {
-    var c = str.charCodeAt(i);
-    if (c < 128) {
-      out[p++] = c;
-    } else {
-      if (c < 2048) {
-        out[p++] = c >> 6 | 192;
-        out[p++] = c & 63 | 128;
-      } else {
-        out[p++] = c >> 12 | 224;
-        out[p++] = c >> 6 & 63 | 128;
-        out[p++] = c & 63 | 128;
-      }
-    }
-  }
-  return out;
-};
-goog.crypt.utf8ByteArrayToString = function(bytes) {
-  var out = [], pos = 0, c = 0;
-  while (pos < bytes.length) {
-    var c1 = bytes[pos++];
-    if (c1 < 128) {
-      out[c++] = String.fromCharCode(c1);
-    } else {
-      if (c1 > 191 && c1 < 224) {
-        var c2 = bytes[pos++];
-        out[c++] = String.fromCharCode((c1 & 31) << 6 | c2 & 63);
-      } else {
-        var c2 = bytes[pos++];
-        var c3 = bytes[pos++];
-        out[c++] = String.fromCharCode((c1 & 15) << 12 | (c2 & 63) << 6 | c3 & 63);
-      }
-    }
-  }
-  return out.join("");
-};
-goog.crypt.xorByteArray = function(bytes1, bytes2) {
-  goog.asserts.assert(bytes1.length == bytes2.length, "XOR array lengths must match");
-  var result = [];
-  for (var i = 0;i < bytes1.length;i++) {
-    result.push(bytes1[i] ^ bytes2[i]);
-  }
-  return result;
-};
-goog.provide("goog.userAgent");
-goog.require("goog.labs.userAgent.browser");
-goog.require("goog.labs.userAgent.engine");
-goog.require("goog.labs.userAgent.platform");
-goog.require("goog.labs.userAgent.util");
-goog.require("goog.string");
-goog.define("goog.userAgent.ASSUME_IE", false);
-goog.define("goog.userAgent.ASSUME_GECKO", false);
-goog.define("goog.userAgent.ASSUME_WEBKIT", false);
-goog.define("goog.userAgent.ASSUME_MOBILE_WEBKIT", false);
-goog.define("goog.userAgent.ASSUME_OPERA", false);
-goog.define("goog.userAgent.ASSUME_ANY_VERSION", false);
-goog.userAgent.BROWSER_KNOWN_ = goog.userAgent.ASSUME_IE || goog.userAgent.ASSUME_GECKO || goog.userAgent.ASSUME_MOBILE_WEBKIT || goog.userAgent.ASSUME_WEBKIT || goog.userAgent.ASSUME_OPERA;
-goog.userAgent.getUserAgentString = function() {
-  return goog.labs.userAgent.util.getUserAgent();
-};
-goog.userAgent.getNavigator = function() {
-  return goog.global["navigator"] || null;
-};
-goog.userAgent.OPERA = goog.userAgent.BROWSER_KNOWN_ ? goog.userAgent.ASSUME_OPERA : goog.labs.userAgent.browser.isOpera();
-goog.userAgent.IE = goog.userAgent.BROWSER_KNOWN_ ? goog.userAgent.ASSUME_IE : goog.labs.userAgent.browser.isIE();
-goog.userAgent.GECKO = goog.userAgent.BROWSER_KNOWN_ ? goog.userAgent.ASSUME_GECKO : goog.labs.userAgent.engine.isGecko();
-goog.userAgent.WEBKIT = goog.userAgent.BROWSER_KNOWN_ ? goog.userAgent.ASSUME_WEBKIT || goog.userAgent.ASSUME_MOBILE_WEBKIT : goog.labs.userAgent.engine.isWebKit();
-goog.userAgent.isMobile_ = function() {
-  return goog.userAgent.WEBKIT && goog.labs.userAgent.util.matchUserAgent("Mobile");
-};
-goog.userAgent.MOBILE = goog.userAgent.ASSUME_MOBILE_WEBKIT || goog.userAgent.isMobile_();
-goog.userAgent.SAFARI = goog.userAgent.WEBKIT;
-goog.userAgent.determinePlatform_ = function() {
-  var navigator = goog.userAgent.getNavigator();
-  return navigator && navigator.platform || "";
-};
-goog.userAgent.PLATFORM = goog.userAgent.determinePlatform_();
-goog.define("goog.userAgent.ASSUME_MAC", false);
-goog.define("goog.userAgent.ASSUME_WINDOWS", false);
-goog.define("goog.userAgent.ASSUME_LINUX", false);
-goog.define("goog.userAgent.ASSUME_X11", false);
-goog.define("goog.userAgent.ASSUME_ANDROID", false);
-goog.define("goog.userAgent.ASSUME_IPHONE", false);
-goog.define("goog.userAgent.ASSUME_IPAD", false);
-goog.userAgent.PLATFORM_KNOWN_ = goog.userAgent.ASSUME_MAC || goog.userAgent.ASSUME_WINDOWS || goog.userAgent.ASSUME_LINUX || goog.userAgent.ASSUME_X11 || goog.userAgent.ASSUME_ANDROID || goog.userAgent.ASSUME_IPHONE || goog.userAgent.ASSUME_IPAD;
-goog.userAgent.MAC = goog.userAgent.PLATFORM_KNOWN_ ? goog.userAgent.ASSUME_MAC : goog.labs.userAgent.platform.isMacintosh();
-goog.userAgent.WINDOWS = goog.userAgent.PLATFORM_KNOWN_ ? goog.userAgent.ASSUME_WINDOWS : goog.labs.userAgent.platform.isWindows();
-goog.userAgent.isLegacyLinux_ = function() {
-  return goog.labs.userAgent.platform.isLinux() || goog.labs.userAgent.platform.isChromeOS();
-};
-goog.userAgent.LINUX = goog.userAgent.PLATFORM_KNOWN_ ? goog.userAgent.ASSUME_LINUX : goog.userAgent.isLegacyLinux_();
-goog.userAgent.isX11_ = function() {
-  var navigator = goog.userAgent.getNavigator();
-  return!!navigator && goog.string.contains(navigator["appVersion"] || "", "X11");
-};
-goog.userAgent.X11 = goog.userAgent.PLATFORM_KNOWN_ ? goog.userAgent.ASSUME_X11 : goog.userAgent.isX11_();
-goog.userAgent.ANDROID = goog.userAgent.PLATFORM_KNOWN_ ? goog.userAgent.ASSUME_ANDROID : goog.labs.userAgent.platform.isAndroid();
-goog.userAgent.IPHONE = goog.userAgent.PLATFORM_KNOWN_ ? goog.userAgent.ASSUME_IPHONE : goog.labs.userAgent.platform.isIphone();
-goog.userAgent.IPAD = goog.userAgent.PLATFORM_KNOWN_ ? goog.userAgent.ASSUME_IPAD : goog.labs.userAgent.platform.isIpad();
-goog.userAgent.determineVersion_ = function() {
-  var version = "", re;
-  if (goog.userAgent.OPERA && goog.global["opera"]) {
-    var operaVersion = goog.global["opera"].version;
-    return goog.isFunction(operaVersion) ? operaVersion() : operaVersion;
-  }
-  if (goog.userAgent.GECKO) {
-    re = /rv\:([^\);]+)(\)|;)/;
-  } else {
-    if (goog.userAgent.IE) {
-      re = /\b(?:MSIE|rv)[: ]([^\);]+)(\)|;)/;
-    } else {
-      if (goog.userAgent.WEBKIT) {
-        re = /WebKit\/(\S+)/;
-      }
-    }
-  }
-  if (re) {
-    var arr = re.exec(goog.userAgent.getUserAgentString());
-    version = arr ? arr[1] : "";
-  }
-  if (goog.userAgent.IE) {
-    var docMode = goog.userAgent.getDocumentMode_();
-    if (docMode > parseFloat(version)) {
-      return String(docMode);
-    }
-  }
-  return version;
-};
-goog.userAgent.getDocumentMode_ = function() {
-  var doc = goog.global["document"];
-  return doc ? doc["documentMode"] : undefined;
-};
-goog.userAgent.VERSION = goog.userAgent.determineVersion_();
-goog.userAgent.compare = function(v1, v2) {
-  return goog.string.compareVersions(v1, v2);
-};
-goog.userAgent.isVersionOrHigherCache_ = {};
-goog.userAgent.isVersionOrHigher = function(version) {
-  return goog.userAgent.ASSUME_ANY_VERSION || goog.userAgent.isVersionOrHigherCache_[version] || (goog.userAgent.isVersionOrHigherCache_[version] = goog.string.compareVersions(goog.userAgent.VERSION, version) >= 0);
-};
-goog.userAgent.isVersion = goog.userAgent.isVersionOrHigher;
-goog.userAgent.isDocumentModeOrHigher = function(documentMode) {
-  return goog.userAgent.IE && goog.userAgent.DOCUMENT_MODE >= documentMode;
-};
-goog.userAgent.isDocumentMode = goog.userAgent.isDocumentModeOrHigher;
-goog.userAgent.DOCUMENT_MODE = function() {
-  var doc = goog.global["document"];
-  if (!doc || !goog.userAgent.IE) {
-    return undefined;
-  }
-  var mode = goog.userAgent.getDocumentMode_();
-  return mode || (doc["compatMode"] == "CSS1Compat" ? parseInt(goog.userAgent.VERSION, 10) : 5);
-}();
-goog.provide("goog.crypt.base64");
-goog.require("goog.crypt");
-goog.require("goog.userAgent");
-goog.crypt.base64.byteToCharMap_ = null;
-goog.crypt.base64.charToByteMap_ = null;
-goog.crypt.base64.byteToCharMapWebSafe_ = null;
-goog.crypt.base64.charToByteMapWebSafe_ = null;
-goog.crypt.base64.ENCODED_VALS_BASE = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + "abcdefghijklmnopqrstuvwxyz" + "0123456789";
-goog.crypt.base64.ENCODED_VALS = goog.crypt.base64.ENCODED_VALS_BASE + "+/=";
-goog.crypt.base64.ENCODED_VALS_WEBSAFE = goog.crypt.base64.ENCODED_VALS_BASE + "-_.";
-goog.crypt.base64.HAS_NATIVE_SUPPORT = goog.userAgent.GECKO || goog.userAgent.WEBKIT || goog.userAgent.OPERA || typeof goog.global.atob == "function";
-goog.crypt.base64.encodeByteArray = function(input, opt_webSafe) {
-  if (!goog.isArrayLike(input)) {
-    throw Error("encodeByteArray takes an array as a parameter");
-  }
-  goog.crypt.base64.init_();
-  var byteToCharMap = opt_webSafe ? goog.crypt.base64.byteToCharMapWebSafe_ : goog.crypt.base64.byteToCharMap_;
-  var output = [];
-  for (var i = 0;i < input.length;i += 3) {
-    var byte1 = input[i];
-    var haveByte2 = i + 1 < input.length;
-    var byte2 = haveByte2 ? input[i + 1] : 0;
-    var haveByte3 = i + 2 < input.length;
-    var byte3 = haveByte3 ? input[i + 2] : 0;
-    var outByte1 = byte1 >> 2;
-    var outByte2 = (byte1 & 3) << 4 | byte2 >> 4;
-    var outByte3 = (byte2 & 15) << 2 | byte3 >> 6;
-    var outByte4 = byte3 & 63;
-    if (!haveByte3) {
-      outByte4 = 64;
-      if (!haveByte2) {
-        outByte3 = 64;
-      }
-    }
-    output.push(byteToCharMap[outByte1], byteToCharMap[outByte2], byteToCharMap[outByte3], byteToCharMap[outByte4]);
-  }
-  return output.join("");
-};
-goog.crypt.base64.encodeString = function(input, opt_webSafe) {
-  if (goog.crypt.base64.HAS_NATIVE_SUPPORT && !opt_webSafe) {
-    return goog.global.btoa(input);
-  }
-  return goog.crypt.base64.encodeByteArray(goog.crypt.stringToByteArray(input), opt_webSafe);
-};
-goog.crypt.base64.decodeString = function(input, opt_webSafe) {
-  if (goog.crypt.base64.HAS_NATIVE_SUPPORT && !opt_webSafe) {
-    return goog.global.atob(input);
-  }
-  return goog.crypt.byteArrayToString(goog.crypt.base64.decodeStringToByteArray(input, opt_webSafe));
-};
-goog.crypt.base64.decodeStringToByteArray = function(input, opt_webSafe) {
-  goog.crypt.base64.init_();
-  var charToByteMap = opt_webSafe ? goog.crypt.base64.charToByteMapWebSafe_ : goog.crypt.base64.charToByteMap_;
-  var output = [];
-  for (var i = 0;i < input.length;) {
-    var byte1 = charToByteMap[input.charAt(i++)];
-    var haveByte2 = i < input.length;
-    var byte2 = haveByte2 ? charToByteMap[input.charAt(i)] : 0;
-    ++i;
-    var haveByte3 = i < input.length;
-    var byte3 = haveByte3 ? charToByteMap[input.charAt(i)] : 64;
-    ++i;
-    var haveByte4 = i < input.length;
-    var byte4 = haveByte4 ? charToByteMap[input.charAt(i)] : 64;
-    ++i;
-    if (byte1 == null || byte2 == null || byte3 == null || byte4 == null) {
-      throw Error();
-    }
-    var outByte1 = byte1 << 2 | byte2 >> 4;
-    output.push(outByte1);
-    if (byte3 != 64) {
-      var outByte2 = byte2 << 4 & 240 | byte3 >> 2;
-      output.push(outByte2);
-      if (byte4 != 64) {
-        var outByte3 = byte3 << 6 & 192 | byte4;
-        output.push(outByte3);
-      }
-    }
-  }
-  return output;
-};
-goog.crypt.base64.init_ = function() {
-  if (!goog.crypt.base64.byteToCharMap_) {
-    goog.crypt.base64.byteToCharMap_ = {};
-    goog.crypt.base64.charToByteMap_ = {};
-    goog.crypt.base64.byteToCharMapWebSafe_ = {};
-    goog.crypt.base64.charToByteMapWebSafe_ = {};
-    for (var i = 0;i < goog.crypt.base64.ENCODED_VALS.length;i++) {
-      goog.crypt.base64.byteToCharMap_[i] = goog.crypt.base64.ENCODED_VALS.charAt(i);
-      goog.crypt.base64.charToByteMap_[goog.crypt.base64.byteToCharMap_[i]] = i;
-      goog.crypt.base64.byteToCharMapWebSafe_[i] = goog.crypt.base64.ENCODED_VALS_WEBSAFE.charAt(i);
-      goog.crypt.base64.charToByteMapWebSafe_[goog.crypt.base64.byteToCharMapWebSafe_[i]] = i;
-      if (i >= goog.crypt.base64.ENCODED_VALS_BASE.length) {
-        goog.crypt.base64.charToByteMap_[goog.crypt.base64.ENCODED_VALS_WEBSAFE.charAt(i)] = i;
-        goog.crypt.base64.charToByteMapWebSafe_[goog.crypt.base64.ENCODED_VALS.charAt(i)] = i;
-      }
-    }
-  }
-};
-goog.provide("fb.constants");
-var NODE_CLIENT = false;
-var CLIENT_VERSION = "0.0.0";
-goog.provide("fb.util.obj");
-fb.util.obj.contains = function(obj, key) {
-  return Object.prototype.hasOwnProperty.call(obj, key);
-};
-fb.util.obj.get = function(obj, key) {
-  if (Object.prototype.hasOwnProperty.call(obj, key)) {
-    return obj[key];
-  }
-};
-fb.util.obj.foreach = function(obj, fn) {
-  for (var key in obj) {
-    if (Object.prototype.hasOwnProperty.call(obj, key)) {
-      fn(key, obj[key]);
-    }
-  }
-};
-fb.util.obj.clone = function(obj) {
-  var clone = {};
-  fb.util.obj.foreach(obj, function(key, value) {
-    clone[key] = value;
-  });
-  return clone;
-};
-goog.provide("fb.util");
-goog.require("fb.util.obj");
-fb.util.querystring = function(querystringParams) {
-  var params = [];
-  fb.util.obj.foreach(querystringParams, function(key, value) {
-    if (goog.isArray(value)) {
-      goog.array.forEach(value, function(arrayVal) {
-        params.push(encodeURIComponent(key) + "=" + encodeURIComponent(arrayVal));
-      });
-    } else {
-      params.push(encodeURIComponent(key) + "=" + encodeURIComponent(value));
-    }
-  });
-  return params.length ? "&" + params.join("&") : "";
-};
-fb.util.querystringDecode = function(querystring) {
-  var obj = {};
-  var tokens = querystring.replace(/^\?/, "").split("&");
-  goog.array.forEach(tokens, function(token) {
-    if (token) {
-      var key = token.split("=");
-      obj[key[0]] = key[1];
-    }
-  });
-  return obj;
-};
-goog.provide("fb.util.validation");
-fb.util.validation.validateArgCount = function(fnName, minCount, maxCount, argCount) {
-  var argError;
-  if (argCount < minCount) {
-    argError = "at least " + minCount;
-  } else {
-    if (argCount > maxCount) {
-      argError = maxCount === 0 ? "none" : "no more than " + maxCount;
-    }
-  }
-  if (argError) {
-    var error = fnName + " failed: Was called with " + argCount + (argCount === 1 ? " argument." : " arguments.") + " Expects " + argError + ".";
-    throw new Error(error);
-  }
-};
-fb.util.validation.errorPrefix = function(fnName, argumentNumber, optional) {
-  var argName = "";
-  switch(argumentNumber) {
-    case 1:
-      argName = optional ? "first" : "First";
-      break;
-    case 2:
-      argName = optional ? "second" : "Second";
-      break;
-    case 3:
-      argName = optional ? "third" : "Third";
-      break;
-    case 4:
-      argName = optional ? "fourth" : "Fourth";
-      break;
-    default:
-      throw new Error("errorPrefix called with argumentNumber > 4.  Need to update it?");;
-  }
-  var error = fnName + " failed: ";
-  error += argName + " argument ";
-  return error;
-};
-fb.util.validation.validateNamespace = function(fnName, argumentNumber, namespace, optional) {
-  if (optional && !goog.isDef(namespace)) {
-    return;
-  }
-  if (!goog.isString(namespace)) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + "must be a valid firebase namespace.");
-  }
-};
-fb.util.validation.validateCallback = function(fnName, argumentNumber, callback, optional) {
-  if (optional && !goog.isDef(callback)) {
-    return;
-  }
-  if (!goog.isFunction(callback)) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + "must be a valid function.");
-  }
-};
-fb.util.validation.validateContextObject = function(fnName, argumentNumber, context, optional) {
-  if (optional && !goog.isDef(context)) {
-    return;
-  }
-  if (!goog.isObject(context) || context === null) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + "must be a valid context object.");
-  }
-};
-goog.provide("fb.util.json");
-goog.require("goog.json");
-fb.util.json.eval = function(str) {
-  if (typeof JSON !== "undefined" && goog.isDef(JSON.parse)) {
-    return JSON.parse(str);
-  } else {
-    return goog.json.parse(str);
-  }
-};
-fb.util.json.stringify = function(data) {
-  if (typeof JSON !== "undefined" && goog.isDef(JSON.stringify)) {
-    return JSON.stringify(data);
-  } else {
-    return goog.json.serialize(data);
-  }
-};
-goog.provide("fb.core.SnapshotHolder");
-fb.core.SnapshotHolder = function() {
-  this.rootNode_ = fb.core.snap.EMPTY_NODE;
-};
-fb.core.SnapshotHolder.prototype.getNode = function(path) {
-  return this.rootNode_.getChild(path);
-};
-fb.core.SnapshotHolder.prototype.updateSnapshot = function(path, newSnapshotNode) {
-  this.rootNode_ = this.rootNode_.updateChild(path, newSnapshotNode);
-};
-if (goog.DEBUG) {
-  fb.core.SnapshotHolder.prototype.toString = function() {
-    return this.rootNode_.toString();
-  };
-}
-;goog.provide("fb.core.view.CompleteChildSource");
-fb.core.view.CompleteChildSource = function() {
-};
-fb.core.view.CompleteChildSource.prototype.getCompleteChild = function(childKey) {
-};
-fb.core.view.CompleteChildSource.prototype.getChildAfterChild = function(index, child, reverse) {
-};
-fb.core.view.NoCompleteChildSource_ = function() {
-};
-fb.core.view.NoCompleteChildSource_.prototype.getCompleteChild = function() {
-  return null;
-};
-fb.core.view.NoCompleteChildSource_.prototype.getChildAfterChild = function() {
-  return null;
-};
-fb.core.view.NO_COMPLETE_CHILD_SOURCE = new fb.core.view.NoCompleteChildSource_;
-fb.core.view.WriteTreeCompleteChildSource = function(writes, viewCache, optCompleteServerCache) {
-  this.writes_ = writes;
-  this.viewCache_ = viewCache;
-  this.optCompleteServerCache_ = optCompleteServerCache;
-};
-fb.core.view.WriteTreeCompleteChildSource.prototype.getCompleteChild = function(childKey) {
-  var node = this.viewCache_.getEventCache();
-  if (node.isCompleteForChild(childKey)) {
-    return node.getNode().getImmediateChild(childKey);
-  } else {
-    var serverNode = this.optCompleteServerCache_ != null ? new fb.core.view.CacheNode(this.optCompleteServerCache_, true, false) : this.viewCache_.getServerCache();
-    return this.writes_.calcCompleteChild(childKey, serverNode);
-  }
-};
-fb.core.view.WriteTreeCompleteChildSource.prototype.getChildAfterChild = function(index, child, reverse) {
-  var completeServerData = this.optCompleteServerCache_ != null ? this.optCompleteServerCache_ : this.viewCache_.getCompleteServerSnap();
-  var nodes = this.writes_.calcIndexedSlice(completeServerData, child, 1, reverse, index);
-  if (nodes.length === 0) {
-    return null;
-  } else {
-    return nodes[0];
-  }
-};
-goog.provide("fb.core.view.EventQueue");
-fb.core.view.EventQueue = function() {
-  this.eventLists_ = [];
-  this.recursionDepth_ = 0;
-};
-fb.core.view.EventQueue.prototype.queueEvents = function(eventDataList) {
-  var currList = null;
-  for (var i = 0;i < eventDataList.length;i++) {
-    var eventData = eventDataList[i];
-    var eventPath = eventData.getPath();
-    if (currList !== null && !eventPath.equals(currList.getPath())) {
-      this.eventLists_.push(currList);
-      currList = null;
-    }
-    if (currList === null) {
-      currList = new fb.core.view.EventList(eventPath);
-    }
-    currList.add(eventData);
-  }
-  if (currList) {
-    this.eventLists_.push(currList);
-  }
-};
-fb.core.view.EventQueue.prototype.raiseEventsAtPath = function(path, eventDataList) {
-  this.queueEvents(eventDataList);
-  this.raiseQueuedEventsMatchingPredicate_(function(eventPath) {
-    return eventPath.equals(path);
-  });
-};
-fb.core.view.EventQueue.prototype.raiseEventsForChangedPath = function(changedPath, eventDataList) {
-  this.queueEvents(eventDataList);
-  this.raiseQueuedEventsMatchingPredicate_(function(eventPath) {
-    return eventPath.contains(changedPath) || changedPath.contains(eventPath);
-  });
-};
-fb.core.view.EventQueue.prototype.raiseQueuedEventsMatchingPredicate_ = function(predicate) {
-  this.recursionDepth_++;
-  var sentAll = true;
-  for (var i = 0;i < this.eventLists_.length;i++) {
-    var eventList = this.eventLists_[i];
-    if (eventList) {
-      var eventPath = eventList.getPath();
-      if (predicate(eventPath)) {
-        this.eventLists_[i].raise();
-        this.eventLists_[i] = null;
-      } else {
-        sentAll = false;
-      }
-    }
-  }
-  if (sentAll) {
-    this.eventLists_ = [];
-  }
-  this.recursionDepth_--;
-};
-fb.core.view.EventList = function(path) {
-  this.path_ = path;
-  this.events_ = [];
-};
-fb.core.view.EventList.prototype.add = function(eventData) {
-  this.events_.push(eventData);
-};
-fb.core.view.EventList.prototype.raise = function() {
-  for (var i = 0;i < this.events_.length;i++) {
-    var eventData = this.events_[i];
-    if (eventData !== null) {
-      this.events_[i] = null;
-      var eventFn = eventData.getEventRunner();
-      if (fb.core.util.logger) {
-        fb.core.util.log("event: " + eventData.toString());
-      }
-      fb.core.util.exceptionGuard(eventFn);
-    }
-  }
-};
-fb.core.view.EventList.prototype.getPath = function() {
-  return this.path_;
-};
-goog.provide("fb.core.view.Change");
-fb.core.view.Change = function(type, snapshotNode, childName, oldSnap, prevName) {
-  this.type = type;
-  this.snapshotNode = snapshotNode;
-  this.childName = childName;
-  this.oldSnap = oldSnap;
-  this.prevName = prevName;
-};
-fb.core.view.Change.valueChange = function(snapshot) {
-  return new fb.core.view.Change(fb.core.view.Change.VALUE, snapshot);
-};
-fb.core.view.Change.childAddedChange = function(childKey, snapshot) {
-  return new fb.core.view.Change(fb.core.view.Change.CHILD_ADDED, snapshot, childKey);
-};
-fb.core.view.Change.childRemovedChange = function(childKey, snapshot) {
-  return new fb.core.view.Change(fb.core.view.Change.CHILD_REMOVED, snapshot, childKey);
-};
-fb.core.view.Change.childChangedChange = function(childKey, newSnapshot, oldSnapshot) {
-  return new fb.core.view.Change(fb.core.view.Change.CHILD_CHANGED, newSnapshot, childKey, oldSnapshot);
-};
-fb.core.view.Change.childMovedChange = function(childKey, snapshot) {
-  return new fb.core.view.Change(fb.core.view.Change.CHILD_MOVED, snapshot, childKey);
-};
-fb.core.view.Change.prototype.changeWithPrevName = function(prevName) {
-  return new fb.core.view.Change(this.type, this.snapshotNode, this.childName, this.oldSnap, prevName);
-};
-fb.core.view.Change.CHILD_ADDED = "child_added";
-fb.core.view.Change.CHILD_REMOVED = "child_removed";
-fb.core.view.Change.CHILD_CHANGED = "child_changed";
-fb.core.view.Change.CHILD_MOVED = "child_moved";
-fb.core.view.Change.VALUE = "value";
-goog.provide("fb.core.view.Event");
-fb.core.view.Event = function() {
-};
-fb.core.view.Event.prototype.getPath;
-fb.core.view.Event.prototype.getEventType;
-fb.core.view.Event.prototype.getEventRunner;
-fb.core.view.Event.prototype.toString;
-fb.core.view.DataEvent = function(eventType, eventRegistration, snapshot, prevName) {
-  this.eventRegistration = eventRegistration;
-  this.snapshot = snapshot;
-  this.prevName = prevName;
-  this.eventType = eventType;
-};
-fb.core.view.DataEvent.prototype.getPath = function() {
-  var ref = this.snapshot.ref();
-  if (this.eventType === "value") {
-    return ref.path;
-  } else {
-    return ref.parent().path;
-  }
-};
-fb.core.view.DataEvent.prototype.getEventType = function() {
-  return this.eventType;
-};
-fb.core.view.DataEvent.prototype.getEventRunner = function() {
-  return this.eventRegistration.getEventRunner(this);
-};
-fb.core.view.DataEvent.prototype.toString = function() {
-  return this.getPath().toString() + ":" + this.eventType + ":" + fb.util.json.stringify(this.snapshot.exportVal());
-};
-fb.core.view.CancelEvent = function(eventRegistration, error, path) {
-  this.eventRegistration = eventRegistration;
-  this.error = error;
-  this.path = path;
-};
-fb.core.view.CancelEvent.prototype.getPath = function() {
-  return this.path;
-};
-fb.core.view.CancelEvent.prototype.getEventType = function() {
-  return "cancel";
-};
-fb.core.view.CancelEvent.prototype.getEventRunner = function() {
-  return this.eventRegistration.getEventRunner(this);
-};
-fb.core.view.CancelEvent.prototype.toString = function() {
-  return this.path.toString() + ":cancel";
-};
-goog.provide("fb.core.view.CacheNode");
-fb.core.view.CacheNode = function(node, fullyInitialized, filtered) {
-  this.node_ = node;
-  this.fullyInitialized_ = fullyInitialized;
-  this.filtered_ = filtered;
-};
-fb.core.view.CacheNode.prototype.isFullyInitialized = function() {
-  return this.fullyInitialized_;
-};
-fb.core.view.CacheNode.prototype.isFiltered = function() {
-  return this.filtered_;
-};
-fb.core.view.CacheNode.prototype.isCompleteForPath = function(path) {
-  if (path.isEmpty()) {
-    return this.isFullyInitialized() && !this.filtered_;
-  } else {
-    var childKey = path.getFront();
-    return this.isCompleteForChild(childKey);
-  }
-};
-fb.core.view.CacheNode.prototype.isCompleteForChild = function(key) {
-  return this.isFullyInitialized() && !this.filtered_ || this.node_.hasChild(key);
-};
-fb.core.view.CacheNode.prototype.getNode = function() {
-  return this.node_;
-};
-goog.provide("fb.core.stats.StatsListener");
-fb.core.stats.StatsListener = function(collection) {
-  this.collection_ = collection;
-  this.last_ = null;
-};
-fb.core.stats.StatsListener.prototype.get = function() {
-  var newStats = this.collection_.get();
-  var delta = goog.object.clone(newStats);
-  if (this.last_) {
-    for (var stat in this.last_) {
-      delta[stat] = delta[stat] - this.last_[stat];
-    }
-  }
-  this.last_ = newStats;
-  return delta;
-};
-goog.provide("fb.core.stats.StatsReporter");
-var FIRST_STATS_MIN_TIME = 10 * 1E3;
-var FIRST_STATS_MAX_TIME = 30 * 1E3;
-var REPORT_STATS_INTERVAL = 5 * 60 * 1E3;
-fb.core.stats.StatsReporter = function(collection, connection) {
-  this.statsToReport_ = {};
-  this.statsListener_ = new fb.core.stats.StatsListener(collection);
-  this.server_ = connection;
-  var timeout = FIRST_STATS_MIN_TIME + (FIRST_STATS_MAX_TIME - FIRST_STATS_MIN_TIME) * Math.random();
-  setTimeout(goog.bind(this.reportStats_, this), Math.floor(timeout));
-};
-fb.core.stats.StatsReporter.prototype.includeStat = function(stat) {
-  this.statsToReport_[stat] = true;
-};
-fb.core.stats.StatsReporter.prototype.reportStats_ = function() {
-  var stats = this.statsListener_.get();
-  var reportedStats = {};
-  var haveStatsToReport = false;
-  for (var stat in stats) {
-    if (stats[stat] > 0 && fb.util.obj.contains(this.statsToReport_, stat)) {
-      reportedStats[stat] = stats[stat];
-      haveStatsToReport = true;
-    }
-  }
-  if (haveStatsToReport) {
-    this.server_.reportStats(reportedStats);
-  }
-  setTimeout(goog.bind(this.reportStats_, this), Math.floor(Math.random() * 2 * REPORT_STATS_INTERVAL));
-};
-goog.provide("fb.core.stats.StatsCollection");
-goog.require("fb.util.obj");
-goog.require("goog.array");
-goog.require("goog.object");
-fb.core.stats.StatsCollection = function() {
-  this.counters_ = {};
-};
-fb.core.stats.StatsCollection.prototype.incrementCounter = function(name, amount) {
-  if (!goog.isDef(amount)) {
-    amount = 1;
-  }
-  if (!fb.util.obj.contains(this.counters_, name)) {
-    this.counters_[name] = 0;
-  }
-  this.counters_[name] += amount;
-};
-fb.core.stats.StatsCollection.prototype.get = function() {
-  return goog.object.clone(this.counters_);
-};
-goog.provide("fb.core.stats.StatsManager");
-goog.require("fb.core.stats.StatsCollection");
-goog.require("fb.core.stats.StatsListener");
-goog.require("fb.core.stats.StatsReporter");
-fb.core.stats.StatsManager = {};
-fb.core.stats.StatsManager.collections_ = {};
-fb.core.stats.StatsManager.reporters_ = {};
-fb.core.stats.StatsManager.getCollection = function(repoInfo) {
-  var hashString = repoInfo.toString();
-  if (!fb.core.stats.StatsManager.collections_[hashString]) {
-    fb.core.stats.StatsManager.collections_[hashString] = new fb.core.stats.StatsCollection;
-  }
-  return fb.core.stats.StatsManager.collections_[hashString];
-};
-fb.core.stats.StatsManager.getOrCreateReporter = function(repoInfo, creatorFunction) {
-  var hashString = repoInfo.toString();
-  if (!fb.core.stats.StatsManager.reporters_[hashString]) {
-    fb.core.stats.StatsManager.reporters_[hashString] = creatorFunction();
-  }
-  return fb.core.stats.StatsManager.reporters_[hashString];
-};
-goog.provide("fb.core.ServerActions");
-fb.core.ServerActions = goog.defineClass(null, {listen:goog.abstractMethod, unlisten:goog.abstractMethod, put:goog.abstractMethod, merge:goog.abstractMethod, auth:goog.abstractMethod, unauth:goog.abstractMethod, onDisconnectPut:goog.abstractMethod, onDisconnectMerge:goog.abstractMethod, onDisconnectCancel:goog.abstractMethod, reportStats:goog.abstractMethod});
-goog.provide("fb.core.snap.Node");
-goog.provide("fb.core.snap.NamedNode");
-fb.core.snap.Node = function() {
-};
-fb.core.snap.Node.prototype.isLeafNode;
-fb.core.snap.Node.prototype.getPriority;
-fb.core.snap.Node.prototype.updatePriority;
-fb.core.snap.Node.prototype.getImmediateChild;
-fb.core.snap.Node.prototype.getChild;
-fb.core.snap.Node.prototype.getPredecessorChildName;
-fb.core.snap.Node.prototype.updateImmediateChild;
-fb.core.snap.Node.prototype.updateChild;
-fb.core.snap.Node.prototype.hasChild;
-fb.core.snap.Node.prototype.isEmpty;
-fb.core.snap.Node.prototype.numChildren;
-fb.core.snap.Node.prototype.val;
-fb.core.snap.Node.prototype.hash;
-fb.core.snap.Node.prototype.compareTo;
-fb.core.snap.Node.prototype.equals;
-fb.core.snap.Node.prototype.withIndex;
-fb.core.snap.Node.prototype.isIndexed;
-fb.core.snap.NamedNode = function(name, node) {
-  this.name = name;
-  this.node = node;
-};
-fb.core.snap.NamedNode.Wrap = function(name, node) {
-  return new fb.core.snap.NamedNode(name, node);
-};
-goog.provide("fb.core.snap.comparators");
-fb.core.snap.NAME_ONLY_COMPARATOR = function(left, right) {
-  return fb.core.util.nameCompare(left.name, right.name);
-};
-fb.core.snap.NAME_COMPARATOR = function(left, right) {
-  return fb.core.util.nameCompare(left, right);
-};
-goog.provide("fb.core.operation.Overwrite");
-fb.core.operation.Overwrite = function(source, path, snap) {
-  this.type = fb.core.OperationType.OVERWRITE;
-  this.source = source;
-  this.path = path;
-  this.snap = snap;
-};
-fb.core.operation.Overwrite.prototype.operationForChild = function(childName) {
-  if (this.path.isEmpty()) {
-    return new fb.core.operation.Overwrite(this.source, fb.core.util.Path.Empty, this.snap.getImmediateChild(childName));
-  } else {
-    return new fb.core.operation.Overwrite(this.source, this.path.popFront(), this.snap);
-  }
-};
-if (goog.DEBUG) {
-  fb.core.operation.Overwrite.prototype.toString = function() {
-    return "Operation(" + this.path + ": " + this.source.toString() + " overwrite: " + this.snap.toString() + ")";
-  };
-}
-;goog.provide("fb.core.operation.AckUserWrite");
-fb.core.operation.AckUserWrite = function(path, revert) {
-  this.type = fb.core.OperationType.ACK_USER_WRITE;
-  this.source = fb.core.OperationSource.User;
-  this.path = path;
-  this.revert = revert;
-};
-fb.core.operation.AckUserWrite.prototype.operationForChild = function(childName) {
-  if (!this.path.isEmpty()) {
-    return new fb.core.operation.AckUserWrite(this.path.popFront(), this.revert);
-  } else {
-    return this;
-  }
-};
-if (goog.DEBUG) {
-  fb.core.operation.AckUserWrite.prototype.toString = function() {
-    return "Operation(" + this.path + ": " + this.source.toString() + " ack write revert=" + this.revert + ")";
-  };
-}
-;goog.provide("fb.core.operation.ListenComplete");
-fb.core.operation.ListenComplete = function(source, path) {
-  this.type = fb.core.OperationType.LISTEN_COMPLETE;
-  this.source = source;
-  this.path = path;
-};
-fb.core.operation.ListenComplete.prototype.operationForChild = function(childName) {
-  if (this.path.isEmpty()) {
-    return new fb.core.operation.ListenComplete(this.source, fb.core.util.Path.Empty);
-  } else {
-    return new fb.core.operation.ListenComplete(this.source, this.path.popFront());
-  }
-};
-if (goog.DEBUG) {
-  fb.core.operation.ListenComplete.prototype.toString = function() {
-    return "Operation(" + this.path + ": " + this.source.toString() + " listen_complete)";
-  };
-}
-;goog.provide("fb.core.util.SortedMap");
-goog.require("goog.array");
-fb.Comparator;
-fb.core.util.SortedMap = goog.defineClass(null, {constructor:function(comparator, opt_root) {
-  this.comparator_ = comparator;
-  this.root_ = opt_root ? opt_root : fb.core.util.SortedMap.EMPTY_NODE_;
-}, insert:function(key, value) {
-  return new fb.core.util.SortedMap(this.comparator_, this.root_.insert(key, value, this.comparator_).copy(null, null, fb.LLRBNode.BLACK, null, null));
-}, remove:function(key) {
-  return new fb.core.util.SortedMap(this.comparator_, this.root_.remove(key, this.comparator_).copy(null, null, fb.LLRBNode.BLACK, null, null));
-}, get:function(key) {
-  var cmp;
-  var node = this.root_;
-  while (!node.isEmpty()) {
-    cmp = this.comparator_(key, node.key);
-    if (cmp === 0) {
-      return node.value;
-    } else {
-      if (cmp < 0) {
-        node = node.left;
-      } else {
-        if (cmp > 0) {
-          node = node.right;
-        }
-      }
-    }
-  }
-  return null;
-}, getPredecessorKey:function(key) {
-  var cmp, node = this.root_, rightParent = null;
-  while (!node.isEmpty()) {
-    cmp = this.comparator_(key, node.key);
-    if (cmp === 0) {
-      if (!node.left.isEmpty()) {
-        node = node.left;
-        while (!node.right.isEmpty()) {
-          node = node.right;
-        }
-        return node.key;
-      } else {
-        if (rightParent) {
-          return rightParent.key;
-        } else {
-          return null;
-        }
-      }
-    } else {
-      if (cmp < 0) {
-        node = node.left;
-      } else {
-        if (cmp > 0) {
-          rightParent = node;
-          node = node.right;
-        }
-      }
-    }
-  }
-  throw new Error("Attempted to find predecessor key for a nonexistent key.  What gives?");
-}, isEmpty:function() {
-  return this.root_.isEmpty();
-}, count:function() {
-  return this.root_.count();
-}, minKey:function() {
-  return this.root_.minKey();
-}, maxKey:function() {
-  return this.root_.maxKey();
-}, inorderTraversal:function(action) {
-  return this.root_.inorderTraversal(action);
-}, reverseTraversal:function(action) {
-  return this.root_.reverseTraversal(action);
-}, getIterator:function(opt_resultGenerator) {
-  return new fb.core.util.SortedMapIterator(this.root_, null, this.comparator_, false, opt_resultGenerator);
-}, getIteratorFrom:function(key, opt_resultGenerator) {
-  return new fb.core.util.SortedMapIterator(this.root_, key, this.comparator_, false, opt_resultGenerator);
-}, getReverseIteratorFrom:function(key, opt_resultGenerator) {
-  return new fb.core.util.SortedMapIterator(this.root_, key, this.comparator_, true, opt_resultGenerator);
-}, getReverseIterator:function(opt_resultGenerator) {
-  return new fb.core.util.SortedMapIterator(this.root_, null, this.comparator_, true, opt_resultGenerator);
-}});
-fb.core.util.SortedMapIterator = goog.defineClass(null, {constructor:function(node, startKey, comparator, isReverse, opt_resultGenerator) {
-  this.resultGenerator_ = opt_resultGenerator || null;
-  this.isReverse_ = isReverse;
-  this.nodeStack_ = [];
-  var cmp = 1;
-  while (!node.isEmpty()) {
-    cmp = startKey ? comparator(node.key, startKey) : 1;
-    if (isReverse) {
-      cmp *= -1;
-    }
-    if (cmp < 0) {
-      if (this.isReverse_) {
-        node = node.left;
-      } else {
-        node = node.right;
-      }
-    } else {
-      if (cmp === 0) {
-        this.nodeStack_.push(node);
-        break;
-      } else {
-        this.nodeStack_.push(node);
-        if (this.isReverse_) {
-          node = node.right;
-        } else {
-          node = node.left;
-        }
-      }
-    }
-  }
-}, getNext:function() {
-  if (this.nodeStack_.length === 0) {
-    return null;
-  }
-  var node = this.nodeStack_.pop(), result;
-  if (this.resultGenerator_) {
-    result = this.resultGenerator_(node.key, node.value);
-  } else {
-    result = {key:node.key, value:node.value};
-  }
-  if (this.isReverse_) {
-    node = node.left;
-    while (!node.isEmpty()) {
-      this.nodeStack_.push(node);
-      node = node.right;
-    }
-  } else {
-    node = node.right;
-    while (!node.isEmpty()) {
-      this.nodeStack_.push(node);
-      node = node.left;
-    }
-  }
-  return result;
-}, hasNext:function() {
-  return this.nodeStack_.length > 0;
-}, peek:function() {
-  if (this.nodeStack_.length === 0) {
-    return null;
-  }
-  var node = goog.array.peek(this.nodeStack_);
-  if (this.resultGenerator_) {
-    return this.resultGenerator_(node.key, node.value);
-  } else {
-    return{key:node.key, value:node.value};
-  }
-}});
-fb.LLRBNode = goog.defineClass(null, {constructor:function(key, value, color, opt_left, opt_right) {
-  this.key = key;
-  this.value = value;
-  this.color = color != null ? color : fb.LLRBNode.RED;
-  this.left = opt_left != null ? opt_left : fb.core.util.SortedMap.EMPTY_NODE_;
-  this.right = opt_right != null ? opt_right : fb.core.util.SortedMap.EMPTY_NODE_;
-}, statics:{RED:true, BLACK:false}, copy:function(key, value, color, left, right) {
-  return new fb.LLRBNode(key != null ? key : this.key, value != null ? value : this.value, color != null ? color : this.color, left != null ? left : this.left, right != null ? right : this.right);
-}, count:function() {
-  return this.left.count() + 1 + this.right.count();
-}, isEmpty:function() {
-  return false;
-}, inorderTraversal:function(action) {
-  return this.left.inorderTraversal(action) || action(this.key, this.value) || this.right.inorderTraversal(action);
-}, reverseTraversal:function(action) {
-  return this.right.reverseTraversal(action) || action(this.key, this.value) || this.left.reverseTraversal(action);
-}, min_:function() {
-  if (this.left.isEmpty()) {
-    return this;
-  } else {
-    return this.left.min_();
-  }
-}, minKey:function() {
-  return this.min_().key;
-}, maxKey:function() {
-  if (this.right.isEmpty()) {
-    return this.key;
-  } else {
-    return this.right.maxKey();
-  }
-}, insert:function(key, value, comparator) {
-  var cmp, n;
-  n = this;
-  cmp = comparator(key, n.key);
-  if (cmp < 0) {
-    n = n.copy(null, null, null, n.left.insert(key, value, comparator), null);
-  } else {
-    if (cmp === 0) {
-      n = n.copy(null, value, null, null, null);
-    } else {
-      n = n.copy(null, null, null, null, n.right.insert(key, value, comparator));
-    }
-  }
-  return n.fixUp_();
-}, removeMin_:function() {
-  var n;
-  if (this.left.isEmpty()) {
-    return fb.core.util.SortedMap.EMPTY_NODE_;
-  }
-  n = this;
-  if (!n.left.isRed_() && !n.left.left.isRed_()) {
-    n = n.moveRedLeft_();
-  }
-  n = n.copy(null, null, null, n.left.removeMin_(), null);
-  return n.fixUp_();
-}, remove:function(key, comparator) {
-  var n, smallest;
-  n = this;
-  if (comparator(key, n.key) < 0) {
-    if (!n.left.isEmpty() && !n.left.isRed_() && !n.left.left.isRed_()) {
-      n = n.moveRedLeft_();
-    }
-    n = n.copy(null, null, null, n.left.remove(key, comparator), null);
-  } else {
-    if (n.left.isRed_()) {
-      n = n.rotateRight_();
-    }
-    if (!n.right.isEmpty() && !n.right.isRed_() && !n.right.left.isRed_()) {
-      n = n.moveRedRight_();
-    }
-    if (comparator(key, n.key) === 0) {
-      if (n.right.isEmpty()) {
-        return fb.core.util.SortedMap.EMPTY_NODE_;
-      } else {
-        smallest = n.right.min_();
-        n = n.copy(smallest.key, smallest.value, null, null, n.right.removeMin_());
-      }
-    }
-    n = n.copy(null, null, null, null, n.right.remove(key, comparator));
-  }
-  return n.fixUp_();
-}, isRed_:function() {
-  return this.color;
-}, fixUp_:function() {
-  var n = this;
-  if (n.right.isRed_() && !n.left.isRed_()) {
-    n = n.rotateLeft_();
-  }
-  if (n.left.isRed_() && n.left.left.isRed_()) {
-    n = n.rotateRight_();
-  }
-  if (n.left.isRed_() && n.right.isRed_()) {
-    n = n.colorFlip_();
-  }
-  return n;
-}, moveRedLeft_:function() {
-  var n = this.colorFlip_();
-  if (n.right.left.isRed_()) {
-    n = n.copy(null, null, null, null, n.right.rotateRight_());
-    n = n.rotateLeft_();
-    n = n.colorFlip_();
-  }
-  return n;
-}, moveRedRight_:function() {
-  var n = this.colorFlip_();
-  if (n.left.left.isRed_()) {
-    n = n.rotateRight_();
-    n = n.colorFlip_();
-  }
-  return n;
-}, rotateLeft_:function() {
-  var nl;
-  nl = this.copy(null, null, fb.LLRBNode.RED, null, this.right.left);
-  return this.right.copy(null, null, this.color, nl, null);
-}, rotateRight_:function() {
-  var nr;
-  nr = this.copy(null, null, fb.LLRBNode.RED, this.left.right, null);
-  return this.left.copy(null, null, this.color, null, nr);
-}, colorFlip_:function() {
-  var left, right;
-  left = this.left.copy(null, null, !this.left.color, null, null);
-  right = this.right.copy(null, null, !this.right.color, null, null);
-  return this.copy(null, null, !this.color, left, right);
-}, checkMaxDepth_:function() {
-  var blackDepth;
-  blackDepth = this.check_();
-  if (Math.pow(2, blackDepth) <= this.count() + 1) {
-    return true;
-  } else {
-    return false;
-  }
-}, check_:function() {
-  var blackDepth;
-  if (this.isRed_() && this.left.isRed_()) {
-    throw new Error("Red node has red child(" + this.key + "," + this.value + ")");
-  }
-  if (this.right.isRed_()) {
-    throw new Error("Right child of (" + this.key + "," + this.value + ") is red");
-  }
-  blackDepth = this.left.check_();
-  if (blackDepth !== this.right.check_()) {
-    throw new Error("Black depths differ");
-  } else {
-    return blackDepth + (this.isRed_() ? 0 : 1);
-  }
-}});
-fb.LLRBEmptyNode = goog.defineClass(null, {constructor:function() {
-}, copy:function() {
-  return this;
-}, insert:function(key, value, comparator) {
-  return new fb.LLRBNode(key, value, null);
-}, remove:function(key, comparator) {
-  return this;
-}, count:function() {
-  return 0;
-}, isEmpty:function() {
-  return true;
-}, inorderTraversal:function(action) {
-  return false;
-}, reverseTraversal:function(action) {
-  return false;
-}, minKey:function() {
-  return null;
-}, maxKey:function() {
-  return null;
-}, check_:function() {
-  return 0;
-}, isRed_:function() {
-  return false;
-}});
-fb.core.util.SortedMap.EMPTY_NODE_ = new fb.LLRBEmptyNode;
-goog.provide("fb.core.util.NodePatches");
-(function() {
-  if (NODE_CLIENT) {
-    var version = process["version"];
-    if (version === "v0.10.22" || version === "v0.10.23" || version === "v0.10.24") {
-      var Writable = require("_stream_writable");
-      Writable["prototype"]["write"] = function(chunk, encoding, cb) {
-        var state = this["_writableState"];
-        var ret = false;
-        if (typeof encoding === "function") {
-          cb = encoding;
-          encoding = null;
-        }
-        if (Buffer["isBuffer"](chunk)) {
-          encoding = "buffer";
-        } else {
-          if (!encoding) {
-            encoding = state["defaultEncoding"];
-          }
-        }
-        if (typeof cb !== "function") {
-          cb = function() {
-          };
-        }
-        if (state["ended"]) {
-          writeAfterEnd(this, state, cb);
-        } else {
-          if (validChunk(this, state, chunk, cb)) {
-            ret = writeOrBuffer(this, state, chunk, encoding, cb);
-          }
-        }
-        return ret;
-      };
-      function writeAfterEnd(stream, state, cb) {
-        var er = new Error("write after end");
-        stream["emit"]("error", er);
-        process["nextTick"](function() {
-          cb(er);
-        });
-      }
-      function validChunk(stream, state, chunk, cb) {
-        var valid = true;
-        if (!Buffer["isBuffer"](chunk) && "string" !== typeof chunk && chunk !== null && chunk !== undefined && !state["objectMode"]) {
-          var er = new TypeError("Invalid non-string/buffer chunk");
-          stream["emit"]("error", er);
-          process["nextTick"](function() {
-            cb(er);
-          });
-          valid = false;
-        }
-        return valid;
-      }
-      function writeOrBuffer(stream, state, chunk, encoding, cb) {
-        chunk = decodeChunk(state, chunk, encoding);
-        if (Buffer["isBuffer"](chunk)) {
-          encoding = "buffer";
-        }
-        var len = state["objectMode"] ? 1 : chunk["length"];
-        state["length"] += len;
-        var ret = state["length"] < state["highWaterMark"];
-        if (!ret) {
-          state["needDrain"] = true;
-        }
-        if (state["writing"]) {
-          state["buffer"]["push"](new WriteReq(chunk, encoding, cb));
-        } else {
-          doWrite(stream, state, len, chunk, encoding, cb);
-        }
-        return ret;
-      }
-      function decodeChunk(state, chunk, encoding) {
-        if (!state["objectMode"] && state["decodeStrings"] !== false && typeof chunk === "string") {
-          chunk = new Buffer(chunk, encoding);
-        }
-        return chunk;
-      }
-      function WriteReq(chunk, encoding, cb) {
-        this["chunk"] = chunk;
-        this["encoding"] = encoding;
-        this["callback"] = cb;
-      }
-      function doWrite(stream, state, len, chunk, encoding, cb) {
-        state["writelen"] = len;
-        state["writecb"] = cb;
-        state["writing"] = true;
-        state["sync"] = true;
-        stream["_write"](chunk, encoding, state["onwrite"]);
-        state["sync"] = false;
-      }
-      var Duplex = require("_stream_duplex");
-      Duplex["prototype"]["write"] = Writable["prototype"]["write"];
-    }
-  }
-})();
-goog.provide("fb.core.util.ServerValues");
-fb.core.util.ServerValues.generateWithValues = function(values) {
-  values = values || {};
-  values["timestamp"] = values["timestamp"] || (new Date).getTime();
-  return values;
-};
-fb.core.util.ServerValues.resolveDeferredValue = function(value, serverValues) {
-  if (!value || typeof value !== "object") {
-    return(value);
-  } else {
-    fb.core.util.assert(".sv" in value, "Unexpected leaf node or priority contents");
-    return serverValues[value[".sv"]];
-  }
-};
-fb.core.util.ServerValues.resolveDeferredValueTree = function(tree, serverValues) {
-  var resolvedTree = new fb.core.SparseSnapshotTree;
-  tree.forEachTree(new fb.core.util.Path(""), function(path, node) {
-    resolvedTree.remember(path, fb.core.util.ServerValues.resolveDeferredValueSnapshot(node, serverValues));
-  });
-  return resolvedTree;
-};
-fb.core.util.ServerValues.resolveDeferredValueSnapshot = function(node, serverValues) {
-  var rawPri = (node.getPriority().val()), priority = fb.core.util.ServerValues.resolveDeferredValue(rawPri, serverValues), newNode;
-  if (node.isLeafNode()) {
-    var leafNode = (node);
-    var value = fb.core.util.ServerValues.resolveDeferredValue(leafNode.getValue(), serverValues);
-    if (value !== leafNode.getValue() || priority !== leafNode.getPriority().val()) {
-      return new fb.core.snap.LeafNode(value, fb.core.snap.NodeFromJSON(priority));
-    } else {
-      return node;
-    }
-  } else {
-    var childrenNode = (node);
-    newNode = childrenNode;
-    if (priority !== childrenNode.getPriority().val()) {
-      newNode = newNode.updatePriority(new fb.core.snap.LeafNode(priority));
-    }
-    childrenNode.forEachChild(fb.core.snap.PriorityIndex, function(childName, childNode) {
-      var newChildNode = fb.core.util.ServerValues.resolveDeferredValueSnapshot(childNode, serverValues);
-      if (newChildNode !== childNode) {
-        newNode = newNode.updateImmediateChild(childName, newChildNode);
-      }
-    });
-    return newNode;
-  }
-};
-goog.provide("fb.core.util.Path");
-goog.provide("fb.core.util.ValidationPath");
-fb.core.util.Path = goog.defineClass(null, {constructor:function(pathOrString, opt_pieceNum) {
-  if (arguments.length == 1) {
-    this.pieces_ = pathOrString.split("/");
-    var copyTo = 0;
-    for (var i = 0;i < this.pieces_.length;i++) {
-      if (this.pieces_[i].length > 0) {
-        this.pieces_[copyTo] = this.pieces_[i];
-        copyTo++;
-      }
-    }
-    this.pieces_.length = copyTo;
-    this.pieceNum_ = 0;
-  } else {
-    this.pieces_ = pathOrString;
-    this.pieceNum_ = opt_pieceNum;
-  }
-}, getFront:function() {
-  if (this.pieceNum_ >= this.pieces_.length) {
-    return null;
-  }
-  return this.pieces_[this.pieceNum_];
-}, getLength:function() {
-  return this.pieces_.length - this.pieceNum_;
-}, popFront:function() {
-  var pieceNum = this.pieceNum_;
-  if (pieceNum < this.pieces_.length) {
-    pieceNum++;
-  }
-  return new fb.core.util.Path(this.pieces_, pieceNum);
-}, getBack:function() {
-  if (this.pieceNum_ < this.pieces_.length) {
-    return this.pieces_[this.pieces_.length - 1];
-  }
-  return null;
-}, toString:function() {
-  var pathString = "";
-  for (var i = this.pieceNum_;i < this.pieces_.length;i++) {
-    if (this.pieces_[i] !== "") {
-      pathString += "/" + this.pieces_[i];
-    }
-  }
-  return pathString || "/";
-}, toUrlEncodedString:function() {
-  var pathString = "";
-  for (var i = this.pieceNum_;i < this.pieces_.length;i++) {
-    if (this.pieces_[i] !== "") {
-      pathString += "/" + goog.string.urlEncode(this.pieces_[i]);
-    }
-  }
-  return pathString || "/";
-}, slice:function(opt_begin) {
-  var begin = opt_begin || 0;
-  return this.pieces_.slice(this.pieceNum_ + begin);
-}, parent:function() {
-  if (this.pieceNum_ >= this.pieces_.length) {
-    return null;
-  }
-  var pieces = [];
-  for (var i = this.pieceNum_;i < this.pieces_.length - 1;i++) {
-    pieces.push(this.pieces_[i]);
-  }
-  return new fb.core.util.Path(pieces, 0);
-}, child:function(childPathObj) {
-  var pieces = [];
-  for (var i = this.pieceNum_;i < this.pieces_.length;i++) {
-    pieces.push(this.pieces_[i]);
-  }
-  if (childPathObj instanceof fb.core.util.Path) {
-    for (i = childPathObj.pieceNum_;i < childPathObj.pieces_.length;i++) {
-      pieces.push(childPathObj.pieces_[i]);
-    }
-  } else {
-    var childPieces = childPathObj.split("/");
-    for (i = 0;i < childPieces.length;i++) {
-      if (childPieces[i].length > 0) {
-        pieces.push(childPieces[i]);
-      }
-    }
-  }
-  return new fb.core.util.Path(pieces, 0);
-}, isEmpty:function() {
-  return this.pieceNum_ >= this.pieces_.length;
-}, statics:{relativePath:function(outerPath, innerPath) {
-  var outer = outerPath.getFront(), inner = innerPath.getFront();
-  if (outer === null) {
-    return innerPath;
-  } else {
-    if (outer === inner) {
-      return fb.core.util.Path.relativePath(outerPath.popFront(), innerPath.popFront());
-    } else {
-      throw new Error("INTERNAL ERROR: innerPath (" + innerPath + ") is not within " + "outerPath (" + outerPath + ")");
-    }
-  }
-}}, equals:function(other) {
-  if (this.getLength() !== other.getLength()) {
-    return false;
-  }
-  for (var i = this.pieceNum_, j = other.pieceNum_;i <= this.pieces_.length;i++, j++) {
-    if (this.pieces_[i] !== other.pieces_[j]) {
-      return false;
-    }
-  }
-  return true;
-}, contains:function(other) {
-  var i = this.pieceNum_;
-  var j = other.pieceNum_;
-  if (this.getLength() > other.getLength()) {
-    return false;
-  }
-  while (i < this.pieces_.length) {
-    if (this.pieces_[i] !== other.pieces_[j]) {
-      return false;
-    }
-    ++i;
-    ++j;
-  }
-  return true;
-}});
-fb.core.util.Path.Empty = new fb.core.util.Path("");
-fb.core.util.ValidationPath = goog.defineClass(null, {constructor:function(path, errorPrefix) {
-  this.parts_ = path.slice();
-  this.byteLength_ = Math.max(1, this.parts_.length);
-  this.errorPrefix_ = errorPrefix;
-  for (var i = 0;i < this.parts_.length;i++) {
-    this.byteLength_ += fb.util.utf8.stringLength(this.parts_[i]);
-  }
-  this.checkValid_();
-}, statics:{MAX_PATH_DEPTH:32, MAX_PATH_LENGTH_BYTES:768}, push:function(child) {
-  if (this.parts_.length > 0) {
-    this.byteLength_ += 1;
-  }
-  this.parts_.push(child);
-  this.byteLength_ += fb.util.utf8.stringLength(child);
-  this.checkValid_();
-}, pop:function() {
-  var last = this.parts_.pop();
-  this.byteLength_ -= fb.util.utf8.stringLength(last);
-  if (this.parts_.length > 0) {
-    this.byteLength_ -= 1;
-  }
-}, checkValid_:function() {
-  if (this.byteLength_ > fb.core.util.ValidationPath.MAX_PATH_LENGTH_BYTES) {
-    throw new Error(this.errorPrefix_ + "has a key path longer than " + fb.core.util.ValidationPath.MAX_PATH_LENGTH_BYTES + " bytes (" + this.byteLength_ + ").");
-  }
-  if (this.parts_.length > fb.core.util.ValidationPath.MAX_PATH_DEPTH) {
-    throw new Error(this.errorPrefix_ + "path specified exceeds the maximum depth that can be written (" + fb.core.util.ValidationPath.MAX_PATH_DEPTH + ") or object contains a cycle " + this.toErrorString());
-  }
-}, toErrorString:function() {
-  if (this.parts_.length == 0) {
-    return "";
-  }
-  return "in property '" + this.parts_.join(".") + "'";
-}});
-goog.provide("fb.core.storage.MemoryStorage");
-goog.require("fb.util.obj");
-goog.scope(function() {
-  var obj = fb.util.obj;
-  fb.core.storage.MemoryStorage = function() {
-    this.cache_ = {};
-  };
-  var MemoryStorage = fb.core.storage.MemoryStorage;
-  MemoryStorage.prototype.set = function(key, value) {
-    if (value == null) {
-      delete this.cache_[key];
-    } else {
-      this.cache_[key] = value;
-    }
-  };
-  MemoryStorage.prototype.get = function(key) {
-    if (obj.contains(this.cache_, key)) {
-      return this.cache_[key];
-    }
-    return null;
-  };
-  MemoryStorage.prototype.remove = function(key) {
-    delete this.cache_[key];
-  };
-  MemoryStorage.prototype.isInMemoryStorage = true;
-});
-goog.provide("fb.core.storage.DOMStorageWrapper");
-goog.require("fb.util.obj");
-goog.scope(function() {
-  fb.core.storage.DOMStorageWrapper = function(domStorage) {
-    this.domStorage_ = domStorage;
-    this.prefix_ = "firebase:";
-  };
-  var DOMStorageWrapper = fb.core.storage.DOMStorageWrapper;
-  DOMStorageWrapper.prototype.set = function(key, value) {
-    if (value == null) {
-      this.domStorage_.removeItem(this.prefixedName_(key));
-    } else {
-      this.domStorage_.setItem(this.prefixedName_(key), fb.util.json.stringify(value));
-    }
-  };
-  DOMStorageWrapper.prototype.get = function(key) {
-    var storedVal = this.domStorage_.getItem(this.prefixedName_(key));
-    if (storedVal == null) {
-      return null;
-    } else {
-      return fb.util.json.eval(storedVal);
-    }
-  };
-  DOMStorageWrapper.prototype.remove = function(key) {
-    this.domStorage_.removeItem(this.prefixedName_(key));
-  };
-  DOMStorageWrapper.prototype.isInMemoryStorage = false;
-  DOMStorageWrapper.prototype.prefixedName_ = function(name) {
-    return this.prefix_ + name;
-  };
-  DOMStorageWrapper.prototype.toString = function() {
-    return this.domStorage_.toString();
-  };
-});
-goog.provide("fb.core.storage");
-goog.require("fb.core.storage.DOMStorageWrapper");
-goog.require("fb.core.storage.MemoryStorage");
-fb.core.storage.createStoragefor = function(domStorageName) {
-  try {
-    if (typeof window !== "undefined" && typeof window[domStorageName] !== "undefined") {
-      var domStorage = window[domStorageName];
-      domStorage.setItem("firebase:sentinel", "cache");
-      domStorage.removeItem("firebase:sentinel");
-      return new fb.core.storage.DOMStorageWrapper(domStorage);
-    }
-  } catch (e) {
-  }
-  return new fb.core.storage.MemoryStorage;
-};
-fb.core.storage.PersistentStorage = fb.core.storage.createStoragefor("localStorage");
-fb.core.storage.SessionStorage = fb.core.storage.createStoragefor("sessionStorage");
-goog.provide("fb.core.RepoInfo");
-goog.require("fb.core.storage");
-fb.core.RepoInfo = function(host, secure, namespace, webSocketOnly, persistenceKey) {
-  this.host = host.toLowerCase();
-  this.domain = this.host.substr(this.host.indexOf(".") + 1);
-  this.secure = secure;
-  this.namespace = namespace;
-  this.webSocketOnly = webSocketOnly;
-  this.persistenceKey = persistenceKey || "";
-  this.internalHost = fb.core.storage.PersistentStorage.get("host:" + host) || this.host;
-};
-fb.core.RepoInfo.prototype.needsQueryParam = function() {
-  return this.host !== this.internalHost;
-};
-fb.core.RepoInfo.prototype.isCacheableHost = function() {
-  return this.internalHost.substr(0, 2) === "s-";
-};
-fb.core.RepoInfo.prototype.isDemoHost = function() {
-  return this.domain === "firebaseio-demo.com";
-};
-fb.core.RepoInfo.prototype.isCustomHost = function() {
-  return this.domain !== "firebaseio.com" && this.domain !== "firebaseio-demo.com";
-};
-fb.core.RepoInfo.prototype.updateHost = function(newHost) {
-  if (newHost !== this.internalHost) {
-    this.internalHost = newHost;
-    if (this.isCacheableHost()) {
-      fb.core.storage.PersistentStorage.set("host:" + this.host, this.internalHost);
-    }
-  }
-};
-fb.core.RepoInfo.prototype.toString = function() {
-  var str = (this.secure ? "https://" : "http://") + this.host;
-  if (this.persistenceKey) {
-    str += "<" + this.persistenceKey + ">";
-  }
-  return str;
-};
-goog.provide("fb.core.util");
-goog.require("fb.constants");
-goog.require("fb.core.RepoInfo");
-goog.require("fb.core.storage");
-goog.require("fb.util.json");
-goog.require("goog.crypt.Sha1");
-goog.require("goog.crypt.base64");
-goog.require("goog.object");
-goog.require("goog.string");
-fb.core.util.LUIDGenerator = function() {
-  var id = 1;
-  return function() {
-    return id++;
-  };
-}();
-fb.core.util.assert = function(assertion, message) {
-  if (!assertion) {
-    throw fb.core.util.assertionError(message);
-  }
-};
-fb.core.util.assertionError = function(message) {
-  return new Error("Firebase (" + Firebase.SDK_VERSION + ") INTERNAL ASSERT FAILED: " + message);
-};
-fb.core.util.assertWeak = function(assertion, message) {
-  if (!assertion) {
-    fb.core.util.error(message);
-  }
-};
-fb.core.util.base64Encode = function(str) {
-  var utf8Bytes = fb.util.utf8.stringToByteArray(str);
-  return goog.crypt.base64.encodeByteArray(utf8Bytes, true);
-};
-fb.core.util.base64Decode = function(str) {
-  try {
-    if (NODE_CLIENT) {
-      return(new Buffer(str, "base64")).toString("utf8");
-    } else {
-      if (typeof atob !== "undefined") {
-        return atob(str);
-      } else {
-        return goog.crypt.base64.decodeString(str, true);
-      }
-    }
-  } catch (e) {
-    fb.core.util.log("base64Decode failed: ", e);
-  }
-  return null;
-};
-fb.core.util.sha1 = function(str) {
-  var utf8Bytes = fb.util.utf8.stringToByteArray(str);
-  var sha1 = new goog.crypt.Sha1;
-  sha1.update(utf8Bytes);
-  var sha1Bytes = sha1.digest();
-  return goog.crypt.base64.encodeByteArray(sha1Bytes);
-};
-fb.core.util.buildLogMessage_ = function(var_args) {
-  var message = "";
-  for (var i = 0;i < arguments.length;i++) {
-    if (goog.isArrayLike(arguments[i])) {
-      message += fb.core.util.buildLogMessage_.apply(null, arguments[i]);
-    } else {
-      if (typeof arguments[i] === "object") {
-        message += fb.util.json.stringify(arguments[i]);
-      } else {
-        message += arguments[i];
-      }
-    }
-    message += " ";
-  }
-  return message;
-};
-fb.core.util.logger = null;
-fb.core.util.firstLog_ = true;
-fb.core.util.log = function(var_args) {
-  if (fb.core.util.firstLog_ === true) {
-    fb.core.util.firstLog_ = false;
-    if (fb.core.util.logger === null && fb.core.storage.SessionStorage.get("logging_enabled") === true) {
-      Firebase.enableLogging(true);
-    }
-  }
-  if (fb.core.util.logger) {
-    var message = fb.core.util.buildLogMessage_.apply(null, arguments);
-    fb.core.util.logger(message);
-  }
-};
-fb.core.util.logWrapper = function(prefix) {
-  return function() {
-    fb.core.util.log(prefix, arguments);
-  };
-};
-fb.core.util.error = function(var_args) {
-  if (typeof console !== "undefined") {
-    var message = "FIREBASE INTERNAL ERROR: " + fb.core.util.buildLogMessage_.apply(null, arguments);
-    if (typeof console.error !== "undefined") {
-      console.error(message);
-    } else {
-      console.log(message);
-    }
-  }
-};
-fb.core.util.fatal = function(var_args) {
-  var message = fb.core.util.buildLogMessage_.apply(null, arguments);
-  throw new Error("FIREBASE FATAL ERROR: " + message);
-};
-fb.core.util.warn = function(var_args) {
-  if (typeof console !== "undefined") {
-    var message = "FIREBASE WARNING: " + fb.core.util.buildLogMessage_.apply(null, arguments);
-    if (typeof console.warn !== "undefined") {
-      console.warn(message);
-    } else {
-      console.log(message);
-    }
-  }
-};
-fb.core.util.warnIfPageIsSecure = function() {
-  if (typeof window !== "undefined" && window.location && window.location.protocol && window.location.protocol.indexOf("https:") !== -1) {
-    fb.core.util.warn("Insecure Firebase access from a secure page. " + "Please use https in calls to new Firebase().");
-  }
-};
-fb.core.util.warnAboutUnsupportedMethod = function(methodName) {
-  fb.core.util.warn(methodName + " is unsupported and will likely change soon.  " + "Please do not use.");
-};
-fb.core.util.parseRepoInfo = function(dataURL) {
-  var parsedUrl = fb.core.util.parseURL(dataURL), namespace = parsedUrl.subdomain;
-  if (parsedUrl.domain === "firebase") {
-    fb.core.util.fatal(parsedUrl.host + " is no longer supported. " + "Please use <YOUR FIREBASE>.firebaseio.com instead");
-  }
-  if (!namespace) {
-    fb.core.util.fatal("Cannot parse Firebase url. " + "Please use https://<YOUR FIREBASE>.firebaseio.com");
-  }
-  if (!parsedUrl.secure) {
-    fb.core.util.warnIfPageIsSecure();
-  }
-  var webSocketOnly = parsedUrl.scheme === "ws" || parsedUrl.scheme === "wss";
-  return{repoInfo:new fb.core.RepoInfo(parsedUrl.host, parsedUrl.secure, namespace, webSocketOnly), path:new fb.core.util.Path(parsedUrl.pathString)};
-};
-fb.core.util.parseURL = function(dataURL) {
-  var host = "", domain = "", subdomain = "", pathString = "";
-  var secure = true, scheme = "https", port = 443;
-  if (goog.isString(dataURL)) {
-    var colonInd = dataURL.indexOf("//");
-    if (colonInd >= 0) {
-      scheme = dataURL.substring(0, colonInd - 1);
-      dataURL = dataURL.substring(colonInd + 2);
-    }
-    var slashInd = dataURL.indexOf("/");
-    if (slashInd === -1) {
-      slashInd = dataURL.length;
-    }
-    host = dataURL.substring(0, slashInd);
-    pathString = fb.core.util.decodePath(dataURL.substring(slashInd));
-    var parts = host.split(".");
-    if (parts.length === 3) {
-      domain = parts[1];
-      subdomain = parts[0].toLowerCase();
-    } else {
-      if (parts.length === 2) {
-        domain = parts[0];
-      }
-    }
-    colonInd = host.indexOf(":");
-    if (colonInd >= 0) {
-      secure = scheme === "https" || scheme === "wss";
-      port = goog.string.parseInt(host.substring(colonInd + 1));
-    }
-  }
-  return{host:host, port:port, domain:domain, subdomain:subdomain, secure:secure, scheme:scheme, pathString:pathString};
-};
-fb.core.util.decodePath = function(pathString) {
-  var pathStringDecoded = "";
-  var pieces = pathString.split("/");
-  for (var i = 0;i < pieces.length;i++) {
-    if (pieces[i].length > 0) {
-      var piece = pieces[i];
-      try {
-        piece = goog.string.urlDecode(piece);
-      } catch (e) {
-      }
-      pathStringDecoded += "/" + piece;
-    }
-  }
-  return pathStringDecoded;
-};
-fb.core.util.isInvalidJSONNumber = function(data) {
-  return goog.isNumber(data) && (data != data || data == Number.POSITIVE_INFINITY || data == Number.NEGATIVE_INFINITY);
-};
-fb.core.util.executeWhenDOMReady = function(fn) {
-  if (NODE_CLIENT || document.readyState === "complete") {
-    fn();
-  } else {
-    var called = false;
-    var wrappedFn = function() {
-      if (!document.body) {
-        setTimeout(wrappedFn, Math.floor(10));
-        return;
-      }
-      if (!called) {
-        called = true;
-        fn();
-      }
-    };
-    if (document.addEventListener) {
-      document.addEventListener("DOMContentLoaded", wrappedFn, false);
-      window.addEventListener("load", wrappedFn, false);
-    } else {
-      if (document.attachEvent) {
-        document.attachEvent("onreadystatechange", function() {
-          if (document.readyState === "complete") {
-            wrappedFn();
-          }
-        });
-        window.attachEvent("onload", wrappedFn);
-      }
-    }
-  }
-};
-fb.core.util.MIN_NAME = "[MIN_NAME]";
-fb.core.util.MAX_NAME = "[MAX_NAME]";
-fb.core.util.nameCompare = function(a, b) {
-  if (a === b) {
-    return 0;
-  } else {
-    if (a === fb.core.util.MIN_NAME || b === fb.core.util.MAX_NAME) {
-      return-1;
-    } else {
-      if (b === fb.core.util.MIN_NAME || a === fb.core.util.MAX_NAME) {
-        return 1;
-      } else {
-        var aAsInt = fb.core.util.tryParseInt(a), bAsInt = fb.core.util.tryParseInt(b);
-        if (aAsInt !== null) {
-          if (bAsInt !== null) {
-            return aAsInt - bAsInt == 0 ? a.length - b.length : aAsInt - bAsInt;
-          } else {
-            return-1;
-          }
-        } else {
-          if (bAsInt !== null) {
-            return 1;
-          } else {
-            return a < b ? -1 : 1;
-          }
-        }
-      }
-    }
-  }
-};
-fb.core.util.stringCompare = function(a, b) {
-  if (a === b) {
-    return 0;
-  } else {
-    if (a < b) {
-      return-1;
-    } else {
-      return 1;
-    }
-  }
-};
-fb.core.util.requireKey = function(key, obj) {
-  if (obj && key in obj) {
-    return obj[key];
-  } else {
-    throw new Error("Missing required key (" + key + ") in object: " + fb.util.json.stringify(obj));
-  }
-};
-fb.core.util.ObjectToUniqueKey = function(obj) {
-  if (typeof obj !== "object" || obj === null) {
-    return fb.util.json.stringify(obj);
-  }
-  var keys = [];
-  for (var k in obj) {
-    keys.push(k);
-  }
-  keys.sort();
-  var key = "{";
-  for (var i = 0;i < keys.length;i++) {
-    if (i !== 0) {
-      key += ",";
-    }
-    key += fb.util.json.stringify(keys[i]);
-    key += ":";
-    key += fb.core.util.ObjectToUniqueKey(obj[keys[i]]);
-  }
-  key += "}";
-  return key;
-};
-fb.core.util.splitStringBySize = function(str, segsize) {
-  if (str.length <= segsize) {
-    return[str];
-  }
-  var dataSegs = [];
-  for (var c = 0;c < str.length;c += segsize) {
-    if (c + segsize > str) {
-      dataSegs.push(str.substring(c, str.length));
-    } else {
-      dataSegs.push(str.substring(c, c + segsize));
-    }
-  }
-  return dataSegs;
-};
-fb.core.util.each = function(obj, fn) {
-  if (goog.isArray(obj)) {
-    for (var i = 0;i < obj.length;++i) {
-      fn(i, obj[i]);
-    }
-  } else {
-    goog.object.forEach(obj, fn);
-  }
-};
-fb.core.util.bindCallback = function(callback, opt_context) {
-  return opt_context ? goog.bind(callback, opt_context) : callback;
-};
-fb.core.util.doubleToIEEE754String = function(v) {
-  fb.core.util.assert(!fb.core.util.isInvalidJSONNumber(v), "Invalid JSON number");
-  var ebits = 11, fbits = 52;
-  var bias = (1 << ebits - 1) - 1, s, e, f, ln, i, bits, str, bytes;
-  if (v === 0) {
-    e = 0;
-    f = 0;
-    s = 1 / v === -Infinity ? 1 : 0;
-  } else {
-    s = v < 0;
-    v = Math.abs(v);
-    if (v >= Math.pow(2, 1 - bias)) {
-      ln = Math.min(Math.floor(Math.log(v) / Math.LN2), bias);
-      e = ln + bias;
-      f = Math.round(v * Math.pow(2, fbits - ln) - Math.pow(2, fbits));
-    } else {
-      e = 0;
-      f = Math.round(v / Math.pow(2, 1 - bias - fbits));
-    }
-  }
-  bits = [];
-  for (i = fbits;i;i -= 1) {
-    bits.push(f % 2 ? 1 : 0);
-    f = Math.floor(f / 2);
-  }
-  for (i = ebits;i;i -= 1) {
-    bits.push(e % 2 ? 1 : 0);
-    e = Math.floor(e / 2);
-  }
-  bits.push(s ? 1 : 0);
-  bits.reverse();
-  str = bits.join("");
-  var hexByteString = "";
-  for (i = 0;i < 64;i += 8) {
-    var hexByte = parseInt(str.substr(i, 8), 2).toString(16);
-    if (hexByte.length === 1) {
-      hexByte = "0" + hexByte;
-    }
-    hexByteString = hexByteString + hexByte;
-  }
-  return hexByteString.toLowerCase();
-};
-fb.core.util.isChromeExtensionContentScript = function() {
-  return!!(typeof window === "object" && window["chrome"] && window["chrome"]["extension"] && !/^chrome/.test(window.location.href));
-};
-fb.core.util.isWindowsStoreApp = function() {
-  return typeof Windows === "object" && typeof Windows.UI === "object";
-};
-fb.core.util.errorForServerCode = function(code) {
-  var reason = "Unknown Error";
-  if (code === "too_big") {
-    reason = "The data requested exceeds the maximum size " + "that can be accessed with a single request.";
-  } else {
-    if (code == "permission_denied") {
-      reason = "Client doesn't have permission to access the desired data.";
-    } else {
-      if (code == "unavailable") {
-        reason = "The service is unavailable";
-      }
-    }
-  }
-  var error = new Error(code + ": " + reason);
-  error.code = code.toUpperCase();
-  return error;
-};
-fb.core.util.INTEGER_REGEXP_ = new RegExp("^-?\\d{1,10}$");
-fb.core.util.tryParseInt = function(str) {
-  if (fb.core.util.INTEGER_REGEXP_.test(str)) {
-    var intVal = Number(str);
-    if (intVal >= -2147483648 && intVal <= 2147483647) {
-      return intVal;
-    }
-  }
-  return null;
-};
-fb.core.util.exceptionGuard = function(fn) {
-  try {
-    fn();
-  } catch (e) {
-    setTimeout(function() {
-      var stack = e.stack || "";
-      fb.core.util.warn("Exception was thrown by user callback.", stack);
-      throw e;
-    }, Math.floor(0));
-  }
-};
-fb.core.util.callUserCallback = function(opt_callback, var_args) {
-  if (goog.isFunction(opt_callback)) {
-    var args = Array.prototype.slice.call(arguments, 1);
-    var newArgs = args.slice();
-    fb.core.util.exceptionGuard(function() {
-      opt_callback.apply(null, newArgs);
-    });
-  }
-};
-fb.core.util.beingCrawled = function() {
-  var userAgent = typeof window === "object" && window["navigator"] && window["navigator"]["userAgent"] || "";
-  return userAgent.search(/googlebot|google webmaster tools|bingbot|yahoo! slurp|baiduspider|yandexbot|duckduckbot/i) >= 0;
-};
-goog.provide("fb.util.utf8");
-goog.require("fb.core.util");
-fb.util.utf8.stringToByteArray = function(str) {
-  var out = [], p = 0;
-  for (var i = 0;i < str.length;i++) {
-    var c = str.charCodeAt(i);
-    if (c >= 55296 && c <= 56319) {
-      var high = c - 55296;
-      i++;
-      fb.core.util.assert(i < str.length, "Surrogate pair missing trail surrogate.");
-      var low = str.charCodeAt(i) - 56320;
-      c = 65536 + (high << 10) + low;
-    }
-    if (c < 128) {
-      out[p++] = c;
-    } else {
-      if (c < 2048) {
-        out[p++] = c >> 6 | 192;
-        out[p++] = c & 63 | 128;
-      } else {
-        if (c < 65536) {
-          out[p++] = c >> 12 | 224;
-          out[p++] = c >> 6 & 63 | 128;
-          out[p++] = c & 63 | 128;
-        } else {
-          out[p++] = c >> 18 | 240;
-          out[p++] = c >> 12 & 63 | 128;
-          out[p++] = c >> 6 & 63 | 128;
-          out[p++] = c & 63 | 128;
-        }
-      }
-    }
-  }
-  return out;
-};
-fb.util.utf8.stringLength = function(str) {
-  var p = 0;
-  for (var i = 0;i < str.length;i++) {
-    var c = str.charCodeAt(i);
-    if (c < 128) {
-      p++;
-    } else {
-      if (c < 2048) {
-        p += 2;
-      } else {
-        if (c >= 55296 && c <= 56319) {
-          p += 4;
-          i++;
-        } else {
-          p += 3;
-        }
-      }
-    }
-  }
-  return p;
-};
-goog.provide("fb.util.jwt");
-goog.require("fb.core.util");
-goog.require("fb.util.json");
-goog.require("fb.util.obj");
-goog.require("goog.crypt.base64");
-goog.require("goog.json");
-fb.util.jwt.decode = function(token) {
-  var header = {}, claims = {}, data = {}, signature = "";
-  try {
-    var parts = token.split(".");
-    header = fb.util.json.eval(fb.core.util.base64Decode(parts[0]) || "");
-    claims = fb.util.json.eval(fb.core.util.base64Decode(parts[1]) || "");
-    signature = parts[2];
-    data = claims["d"] || {};
-    delete claims["d"];
-  } catch (e) {
-  }
-  return{header:header, claims:claims, data:data, signature:signature};
-};
-fb.util.jwt.isValidTimestamp = function(token) {
-  var claims = fb.util.jwt.decode(token).claims, now = Math.floor((new Date).getTime() / 1E3), validSince, validUntil;
-  if (typeof claims === "object") {
-    if (claims.hasOwnProperty("nbf")) {
-      validSince = fb.util.obj.get(claims, "nbf");
-    } else {
-      if (claims.hasOwnProperty("iat")) {
-        validSince = fb.util.obj.get(claims, "iat");
-      }
-    }
-    if (claims.hasOwnProperty("exp")) {
-      validUntil = fb.util.obj.get(claims, "exp");
-    } else {
-      validUntil = validSince + 86400;
-    }
-  }
-  return now && validSince && validUntil && now >= validSince && now <= validUntil;
-};
-fb.util.jwt.issuedAtTime = function(token) {
-  var claims = fb.util.jwt.decode(token).claims;
-  if (typeof claims === "object" && claims.hasOwnProperty("iat")) {
-    return fb.util.obj.get(claims, "iat");
-  }
-  return null;
-};
-fb.util.jwt.isValidFormat = function(token) {
-  var decoded = fb.util.jwt.decode(token), claims = decoded.claims;
-  return!!decoded.signature && !!claims && typeof claims === "object" && claims.hasOwnProperty("iat");
-};
-fb.util.jwt.isAdmin = function(token) {
-  var claims = fb.util.jwt.decode(token).claims;
-  return typeof claims === "object" && fb.util.obj.get(claims, "admin") === true;
-};
-goog.provide("fb.core.view.EventGenerator");
-goog.require("fb.core.snap.NamedNode");
-goog.require("fb.core.util");
-fb.core.view.EventGenerator = function(query) {
-  this.query_ = query;
-  this.index_ = query.getQueryParams().getIndex();
-};
-fb.core.view.EventGenerator.prototype.generateEventsForChanges = function(changes, eventCache, eventRegistrations) {
-  var events = [], self = this;
-  var moves = [];
-  goog.array.forEach(changes, function(change) {
-    if (change.type === fb.core.view.Change.CHILD_CHANGED && self.index_.indexedValueChanged((change.oldSnap), change.snapshotNode)) {
-      moves.push(fb.core.view.Change.childMovedChange((change.childName), change.snapshotNode));
-    }
-  });
-  this.generateEventsForType_(events, fb.core.view.Change.CHILD_REMOVED, changes, eventRegistrations, eventCache);
-  this.generateEventsForType_(events, fb.core.view.Change.CHILD_ADDED, changes, eventRegistrations, eventCache);
-  this.generateEventsForType_(events, fb.core.view.Change.CHILD_MOVED, moves, eventRegistrations, eventCache);
-  this.generateEventsForType_(events, fb.core.view.Change.CHILD_CHANGED, changes, eventRegistrations, eventCache);
-  this.generateEventsForType_(events, fb.core.view.Change.VALUE, changes, eventRegistrations, eventCache);
-  return events;
-};
-fb.core.view.EventGenerator.prototype.generateEventsForType_ = function(events, eventType, changes, registrations, eventCache) {
-  var filteredChanges = goog.array.filter(changes, function(change) {
-    return change.type === eventType;
-  });
-  var self = this;
-  goog.array.sort(filteredChanges, goog.bind(this.compareChanges_, this));
-  goog.array.forEach(filteredChanges, function(change) {
-    var materializedChange = self.materializeSingleChange_(change, eventCache);
-    goog.array.forEach(registrations, function(registration) {
-      if (registration.respondsTo(change.type)) {
-        events.push(registration.createEvent(materializedChange, self.query_));
-      }
-    });
-  });
-};
-fb.core.view.EventGenerator.prototype.materializeSingleChange_ = function(change, eventCache) {
-  if (change.type === "value" || change.type === "child_removed") {
-    return change;
-  } else {
-    change.prevName = eventCache.getPredecessorChildName((change.childName), change.snapshotNode, this.index_);
-    return change;
-  }
-};
-fb.core.view.EventGenerator.prototype.compareChanges_ = function(a, b) {
-  if (a.childName == null || b.childName == null) {
-    throw fb.core.util.assertionError("Should only compare child_ events.");
-  }
-  var aWrapped = new fb.core.snap.NamedNode(a.childName, a.snapshotNode);
-  var bWrapped = new fb.core.snap.NamedNode(b.childName, b.snapshotNode);
-  return this.index_.compare(aWrapped, bWrapped);
-};
-goog.provide("fb.core.view.ChildChangeAccumulator");
-goog.require("fb.core.util");
-fb.core.view.ChildChangeAccumulator = function() {
-  this.changeMap_ = {};
-};
-fb.core.view.ChildChangeAccumulator.prototype.trackChildChange = function(change) {
-  var Change = fb.core.view.Change;
-  var type = change.type;
-  var childKey = (change.childName);
-  fb.core.util.assert(type == fb.core.view.Change.CHILD_ADDED || type == fb.core.view.Change.CHILD_CHANGED || type == fb.core.view.Change.CHILD_REMOVED, "Only child changes supported for tracking");
-  fb.core.util.assert(childKey !== ".priority", "Only non-priority child changes can be tracked.");
-  var oldChange = fb.util.obj.get(this.changeMap_, childKey);
-  if (oldChange) {
-    var oldType = oldChange.type;
-    if (type == Change.CHILD_ADDED && oldType == Change.CHILD_REMOVED) {
-      this.changeMap_[childKey] = Change.childChangedChange(childKey, change.snapshotNode, oldChange.snapshotNode);
-    } else {
-      if (type == Change.CHILD_REMOVED && oldType == Change.CHILD_ADDED) {
-        delete this.changeMap_[childKey];
-      } else {
-        if (type == Change.CHILD_REMOVED && oldType == Change.CHILD_CHANGED) {
-          this.changeMap_[childKey] = Change.childRemovedChange(childKey, (oldChange.oldSnap));
-        } else {
-          if (type == Change.CHILD_CHANGED && oldType == Change.CHILD_ADDED) {
-            this.changeMap_[childKey] = Change.childAddedChange(childKey, change.snapshotNode);
-          } else {
-            if (type == Change.CHILD_CHANGED && oldType == Change.CHILD_CHANGED) {
-              this.changeMap_[childKey] = Change.childChangedChange(childKey, change.snapshotNode, (oldChange.oldSnap));
-            } else {
-              throw fb.core.util.assertionError("Illegal combination of changes: " + change + " occurred after " + oldChange);
-            }
-          }
-        }
-      }
-    }
-  } else {
-    this.changeMap_[childKey] = change;
-  }
-};
-fb.core.view.ChildChangeAccumulator.prototype.getChanges = function() {
-  return goog.object.getValues(this.changeMap_);
-};
-goog.provide("fb.core.view.EventRegistration");
-goog.require("fb.core.view.Change");
-goog.require("fb.core.view.Event");
-goog.require("fb.core.util");
-fb.core.view.EventRegistration = function() {
-};
-fb.core.view.EventRegistration.prototype.respondsTo;
-fb.core.view.EventRegistration.prototype.createEvent;
-fb.core.view.EventRegistration.prototype.getEventRunner;
-fb.core.view.EventRegistration.prototype.createCancelEvent;
-fb.core.view.EventRegistration.prototype.matches;
-fb.core.view.EventRegistration.prototype.hasAnyCallback;
-fb.core.view.ValueEventRegistration = function(callback, cancelCallback, context) {
-  this.callback_ = callback;
-  this.cancelCallback_ = cancelCallback;
-  this.context_ = context || null;
-};
-fb.core.view.ValueEventRegistration.prototype.respondsTo = function(eventType) {
-  return eventType === "value";
-};
-fb.core.view.ValueEventRegistration.prototype.createEvent = function(change, query) {
-  var index = query.getQueryParams().getIndex();
-  return new fb.core.view.DataEvent("value", this, new fb.api.DataSnapshot(change.snapshotNode, query.ref(), index));
-};
-fb.core.view.ValueEventRegistration.prototype.getEventRunner = function(eventData) {
-  var ctx = this.context_;
-  if (eventData.getEventType() === "cancel") {
-    fb.core.util.assert(this.cancelCallback_, "Raising a cancel event on a listener with no cancel callback");
-    var cancelCB = this.cancelCallback_;
-    return function() {
-      cancelCB.call(ctx, eventData.error);
-    };
-  } else {
-    var cb = this.callback_;
-    return function() {
-      cb.call(ctx, eventData.snapshot);
-    };
-  }
-};
-fb.core.view.ValueEventRegistration.prototype.createCancelEvent = function(error, path) {
-  if (this.cancelCallback_) {
-    return new fb.core.view.CancelEvent(this, error, path);
-  } else {
-    return null;
-  }
-};
-fb.core.view.ValueEventRegistration.prototype.matches = function(other) {
-  if (!(other instanceof fb.core.view.ValueEventRegistration)) {
-    return false;
-  } else {
-    if (!other.callback_ || !this.callback_) {
-      return true;
-    } else {
-      return other.callback_ === this.callback_ && other.context_ === this.context_;
-    }
-  }
-};
-fb.core.view.ValueEventRegistration.prototype.hasAnyCallback = function() {
-  return this.callback_ !== null;
-};
-fb.core.view.ChildEventRegistration = function(callbacks, cancelCallback, context) {
-  this.callbacks_ = callbacks;
-  this.cancelCallback_ = cancelCallback;
-  this.context_ = context;
-};
-fb.core.view.ChildEventRegistration.prototype.respondsTo = function(eventType) {
-  var eventToCheck = eventType === "children_added" ? "child_added" : eventType;
-  eventToCheck = eventToCheck === "children_removed" ? "child_removed" : eventToCheck;
-  return goog.object.containsKey(this.callbacks_, eventToCheck);
-};
-fb.core.view.ChildEventRegistration.prototype.createCancelEvent = function(error, path) {
-  if (this.cancelCallback_) {
-    return new fb.core.view.CancelEvent(this, error, path);
-  } else {
-    return null;
-  }
-};
-fb.core.view.ChildEventRegistration.prototype.createEvent = function(change, query) {
-  fb.core.util.assert(change.childName != null, "Child events should have a childName.");
-  var ref = query.ref().child((change.childName));
-  var index = query.getQueryParams().getIndex();
-  return new fb.core.view.DataEvent(change.type, this, new fb.api.DataSnapshot(change.snapshotNode, ref, index), change.prevName);
-};
-fb.core.view.ChildEventRegistration.prototype.getEventRunner = function(eventData) {
-  var ctx = this.context_;
-  if (eventData.getEventType() === "cancel") {
-    fb.core.util.assert(this.cancelCallback_, "Raising a cancel event on a listener with no cancel callback");
-    var cancelCB = this.cancelCallback_;
-    return function() {
-      cancelCB.call(ctx, eventData.error);
-    };
-  } else {
-    var cb = this.callbacks_[eventData.eventType];
-    return function() {
-      cb.call(ctx, eventData.snapshot, eventData.prevName);
-    };
-  }
-};
-fb.core.view.ChildEventRegistration.prototype.matches = function(other) {
-  if (other instanceof fb.core.view.ChildEventRegistration) {
-    if (!this.callbacks_ || !other.callbacks_) {
-      return true;
-    } else {
-      if (this.context_ === other.context_) {
-        var otherCount = goog.object.getCount(other.callbacks_);
-        var thisCount = goog.object.getCount(this.callbacks_);
-        if (otherCount === thisCount) {
-          if (otherCount === 1) {
-            var otherKey = (goog.object.getAnyKey(other.callbacks_));
-            var thisKey = (goog.object.getAnyKey(this.callbacks_));
-            return thisKey === otherKey && (!other.callbacks_[otherKey] || !this.callbacks_[thisKey] || other.callbacks_[otherKey] === this.callbacks_[thisKey]);
-          } else {
-            return goog.object.every(this.callbacks_, function(cb, eventType) {
-              return other.callbacks_[eventType] === cb;
-            });
-          }
-        }
-      }
-    }
-  }
-  return false;
-};
-fb.core.view.ChildEventRegistration.prototype.hasAnyCallback = function() {
-  return this.callbacks_ !== null;
-};
-goog.provide("fb.core.view.filter.IndexedFilter");
-goog.require("fb.core.util");
-fb.core.view.filter.IndexedFilter = function(index) {
-  this.index_ = index;
-};
-fb.core.view.filter.IndexedFilter.prototype.updateChild = function(snap, key, newChild, source, optChangeAccumulator) {
-  var Change = fb.core.view.Change;
-  fb.core.util.assert(snap.isIndexed(this.index_), "A node must be indexed if only a child is updated");
-  var oldChild = snap.getImmediateChild(key);
-  if (oldChild.equals(newChild)) {
-    return snap;
-  }
-  if (optChangeAccumulator != null) {
-    if (newChild.isEmpty()) {
-      if (snap.hasChild(key)) {
-        optChangeAccumulator.trackChildChange(Change.childRemovedChange(key, oldChild));
-      } else {
-        fb.core.util.assert(snap.isLeafNode(), "A child remove without an old child only makes sense on a leaf node");
-      }
-    } else {
-      if (oldChild.isEmpty()) {
-        optChangeAccumulator.trackChildChange(Change.childAddedChange(key, newChild));
-      } else {
-        optChangeAccumulator.trackChildChange(Change.childChangedChange(key, newChild, oldChild));
-      }
-    }
-  }
-  if (snap.isLeafNode() && newChild.isEmpty()) {
-    return snap;
-  } else {
-    return snap.updateImmediateChild(key, newChild).withIndex(this.index_);
-  }
-};
-fb.core.view.filter.IndexedFilter.prototype.updateFullNode = function(oldSnap, newSnap, optChangeAccumulator) {
-  var Change = fb.core.view.Change;
-  if (optChangeAccumulator != null) {
-    if (!oldSnap.isLeafNode()) {
-      oldSnap.forEachChild(fb.core.snap.PriorityIndex, function(key, childNode) {
-        if (!newSnap.hasChild(key)) {
-          optChangeAccumulator.trackChildChange(Change.childRemovedChange(key, childNode));
-        }
-      });
-    }
-    if (!newSnap.isLeafNode()) {
-      newSnap.forEachChild(fb.core.snap.PriorityIndex, function(key, childNode) {
-        if (oldSnap.hasChild(key)) {
-          var oldChild = oldSnap.getImmediateChild(key);
-          if (!oldChild.equals(childNode)) {
-            optChangeAccumulator.trackChildChange(Change.childChangedChange(key, childNode, oldChild));
-          }
-        } else {
-          optChangeAccumulator.trackChildChange(Change.childAddedChange(key, childNode));
-        }
-      });
-    }
-  }
-  return newSnap.withIndex(this.index_);
-};
-fb.core.view.filter.IndexedFilter.prototype.updatePriority = function(oldSnap, newPriority) {
-  if (oldSnap.isEmpty()) {
-    return fb.core.snap.EMPTY_NODE;
-  } else {
-    return oldSnap.updatePriority(newPriority);
-  }
-};
-fb.core.view.filter.IndexedFilter.prototype.filtersNodes = function() {
-  return false;
-};
-fb.core.view.filter.IndexedFilter.prototype.getIndexedFilter = function() {
-  return this;
-};
-fb.core.view.filter.IndexedFilter.prototype.getIndex = function() {
-  return this.index_;
-};
-goog.provide("fb.core.view.filter.RangedFilter");
-goog.require("fb.core.view.filter.IndexedFilter");
-fb.core.view.filter.RangedFilter = function(params) {
-  this.indexedFilter_ = new fb.core.view.filter.IndexedFilter(params.getIndex());
-  this.index_ = params.getIndex();
-  this.startPost_ = this.getStartPost_(params);
-  this.endPost_ = this.getEndPost_(params);
-};
-fb.core.view.filter.RangedFilter.prototype.getStartPost = function() {
-  return this.startPost_;
-};
-fb.core.view.filter.RangedFilter.prototype.getEndPost = function() {
-  return this.endPost_;
-};
-fb.core.view.filter.RangedFilter.prototype.matches = function(node) {
-  return this.index_.compare(this.getStartPost(), node) <= 0 && this.index_.compare(node, this.getEndPost()) <= 0;
-};
-fb.core.view.filter.RangedFilter.prototype.updateChild = function(snap, key, newChild, source, optChangeAccumulator) {
-  if (!this.matches(new fb.core.snap.NamedNode(key, newChild))) {
-    newChild = fb.core.snap.EMPTY_NODE;
-  }
-  return this.indexedFilter_.updateChild(snap, key, newChild, source, optChangeAccumulator);
-};
-fb.core.view.filter.RangedFilter.prototype.updateFullNode = function(oldSnap, newSnap, optChangeAccumulator) {
-  if (newSnap.isLeafNode()) {
-    newSnap = fb.core.snap.EMPTY_NODE;
-  }
-  var filtered = newSnap.withIndex(this.index_);
-  filtered = filtered.updatePriority(fb.core.snap.EMPTY_NODE);
-  var self = this;
-  newSnap.forEachChild(fb.core.snap.PriorityIndex, function(key, childNode) {
-    if (!self.matches(new fb.core.snap.NamedNode(key, childNode))) {
-      filtered = filtered.updateImmediateChild(key, fb.core.snap.EMPTY_NODE);
-    }
-  });
-  return this.indexedFilter_.updateFullNode(oldSnap, filtered, optChangeAccumulator);
-};
-fb.core.view.filter.RangedFilter.prototype.updatePriority = function(oldSnap, newPriority) {
-  return oldSnap;
-};
-fb.core.view.filter.RangedFilter.prototype.filtersNodes = function() {
-  return true;
-};
-fb.core.view.filter.RangedFilter.prototype.getIndexedFilter = function() {
-  return this.indexedFilter_;
-};
-fb.core.view.filter.RangedFilter.prototype.getIndex = function() {
-  return this.index_;
-};
-fb.core.view.filter.RangedFilter.prototype.getStartPost_ = function(params) {
-  if (params.hasStart()) {
-    var startName = params.getIndexStartName();
-    return params.getIndex().makePost(params.getIndexStartValue(), startName);
-  } else {
-    return params.getIndex().minPost();
-  }
-};
-fb.core.view.filter.RangedFilter.prototype.getEndPost_ = function(params) {
-  if (params.hasEnd()) {
-    var endName = params.getIndexEndName();
-    return params.getIndex().makePost(params.getIndexEndValue(), endName);
-  } else {
-    return params.getIndex().maxPost();
-  }
-};
-goog.provide("fb.core.view.filter.NodeFilter");
-goog.require("fb.core.view.ChildChangeAccumulator");
-goog.require("fb.core.view.CompleteChildSource");
-fb.core.view.filter.NodeFilter = function() {
-};
-fb.core.view.filter.NodeFilter.prototype.updateChild = function(snap, key, newChild, source, optChangeAccumulator) {
-};
-fb.core.view.filter.NodeFilter.prototype.updateFullNode = function(oldSnap, newSnap, optChangeAccumulator) {
-};
-fb.core.view.filter.NodeFilter.prototype.updatePriority = function(oldSnap, newPriority) {
-};
-fb.core.view.filter.NodeFilter.prototype.filtersNodes = function() {
-};
-fb.core.view.filter.NodeFilter.prototype.getIndexedFilter = function() {
-};
-fb.core.view.filter.NodeFilter.prototype.getIndex = function() {
-};
-goog.provide("fb.core.view.filter.LimitedFilter");
-goog.require("fb.core.snap.NamedNode");
-goog.require("fb.core.view.filter.RangedFilter");
-goog.require("fb.core.util");
-fb.core.view.filter.LimitedFilter = function(params) {
-  this.rangedFilter_ = new fb.core.view.filter.RangedFilter(params);
-  this.index_ = params.getIndex();
-  this.limit_ = params.getLimit();
-  this.reverse_ = !params.isViewFromLeft();
-};
-fb.core.view.filter.LimitedFilter.prototype.updateChild = function(snap, key, newChild, source, optChangeAccumulator) {
-  if (!this.rangedFilter_.matches(new fb.core.snap.NamedNode(key, newChild))) {
-    newChild = fb.core.snap.EMPTY_NODE;
-  }
-  if (snap.getImmediateChild(key).equals(newChild)) {
-    return snap;
-  } else {
-    if (snap.numChildren() < this.limit_) {
-      return this.rangedFilter_.getIndexedFilter().updateChild(snap, key, newChild, source, optChangeAccumulator);
-    } else {
-      return this.fullLimitUpdateChild_(snap, key, newChild, source, optChangeAccumulator);
-    }
-  }
-};
-fb.core.view.filter.LimitedFilter.prototype.updateFullNode = function(oldSnap, newSnap, optChangeAccumulator) {
-  var filtered;
-  if (newSnap.isLeafNode() || newSnap.isEmpty()) {
-    filtered = fb.core.snap.EMPTY_NODE.withIndex(this.index_);
-  } else {
-    if (this.limit_ * 2 < newSnap.numChildren() && newSnap.isIndexed(this.index_)) {
-      filtered = fb.core.snap.EMPTY_NODE.withIndex(this.index_);
-      var iterator;
-      newSnap = (newSnap);
-      if (this.reverse_) {
-        iterator = newSnap.getReverseIteratorFrom(this.rangedFilter_.getEndPost(), this.index_);
-      } else {
-        iterator = newSnap.getIteratorFrom(this.rangedFilter_.getStartPost(), this.index_);
-      }
-      var count = 0;
-      while (iterator.hasNext() && count < this.limit_) {
-        var next = iterator.getNext();
-        var inRange;
-        if (this.reverse_) {
-          inRange = this.index_.compare(this.rangedFilter_.getStartPost(), next) <= 0;
-        } else {
-          inRange = this.index_.compare(next, this.rangedFilter_.getEndPost()) <= 0;
-        }
-        if (inRange) {
-          filtered = filtered.updateImmediateChild(next.name, next.node);
-          count++;
-        } else {
-          break;
-        }
-      }
-    } else {
-      filtered = newSnap.withIndex(this.index_);
-      filtered = (filtered.updatePriority(fb.core.snap.EMPTY_NODE));
-      var startPost;
-      var endPost;
-      var cmp;
-      if (this.reverse_) {
-        iterator = filtered.getReverseIterator(this.index_);
-        startPost = this.rangedFilter_.getEndPost();
-        endPost = this.rangedFilter_.getStartPost();
-        var indexCompare = this.index_.getCompare();
-        cmp = function(a, b) {
-          return indexCompare(b, a);
-        };
-      } else {
-        iterator = filtered.getIterator(this.index_);
-        startPost = this.rangedFilter_.getStartPost();
-        endPost = this.rangedFilter_.getEndPost();
-        cmp = this.index_.getCompare();
-      }
-      count = 0;
-      var foundStartPost = false;
-      while (iterator.hasNext()) {
-        next = iterator.getNext();
-        if (!foundStartPost && cmp(startPost, next) <= 0) {
-          foundStartPost = true;
-        }
-        inRange = foundStartPost && count < this.limit_ && cmp(next, endPost) <= 0;
-        if (inRange) {
-          count++;
-        } else {
-          filtered = filtered.updateImmediateChild(next.name, fb.core.snap.EMPTY_NODE);
-        }
-      }
-    }
-  }
-  return this.rangedFilter_.getIndexedFilter().updateFullNode(oldSnap, filtered, optChangeAccumulator);
-};
-fb.core.view.filter.LimitedFilter.prototype.updatePriority = function(oldSnap, newPriority) {
-  return oldSnap;
-};
-fb.core.view.filter.LimitedFilter.prototype.filtersNodes = function() {
-  return true;
-};
-fb.core.view.filter.LimitedFilter.prototype.getIndexedFilter = function() {
-  return this.rangedFilter_.getIndexedFilter();
-};
-fb.core.view.filter.LimitedFilter.prototype.getIndex = function() {
-  return this.index_;
-};
-fb.core.view.filter.LimitedFilter.prototype.fullLimitUpdateChild_ = function(snap, childKey, childSnap, source, optChangeAccumulator) {
-  var Change = fb.core.view.Change;
-  var cmp;
-  if (this.reverse_) {
-    var indexCmp = this.index_.getCompare();
-    cmp = function(a, b) {
-      return indexCmp(b, a);
-    };
-  } else {
-    cmp = this.index_.getCompare();
-  }
-  var oldEventCache = (snap);
-  fb.core.util.assert(oldEventCache.numChildren() == this.limit_, "");
-  var newChildNamedNode = new fb.core.snap.NamedNode(childKey, childSnap);
-  var windowBoundary = (this.reverse_ ? oldEventCache.getFirstChild(this.index_) : oldEventCache.getLastChild(this.index_));
-  var inRange = this.rangedFilter_.matches(newChildNamedNode);
-  if (oldEventCache.hasChild(childKey)) {
-    var oldChildSnap = oldEventCache.getImmediateChild(childKey);
-    var nextChild = source.getChildAfterChild(this.index_, windowBoundary, this.reverse_);
-    if (nextChild != null && nextChild.name == childKey) {
-      nextChild = source.getChildAfterChild(this.index_, nextChild, this.reverse_);
-    }
-    var compareNext = nextChild == null ? 1 : cmp(nextChild, newChildNamedNode);
-    var remainsInWindow = inRange && !childSnap.isEmpty() && compareNext >= 0;
-    if (remainsInWindow) {
-      if (optChangeAccumulator != null) {
-        optChangeAccumulator.trackChildChange(Change.childChangedChange(childKey, childSnap, oldChildSnap));
-      }
-      return oldEventCache.updateImmediateChild(childKey, childSnap);
-    } else {
-      if (optChangeAccumulator != null) {
-        optChangeAccumulator.trackChildChange(Change.childRemovedChange(childKey, oldChildSnap));
-      }
-      var newEventCache = oldEventCache.updateImmediateChild(childKey, fb.core.snap.EMPTY_NODE);
-      var nextChildInRange = nextChild != null && this.rangedFilter_.matches(nextChild);
-      if (nextChildInRange) {
-        if (optChangeAccumulator != null) {
-          optChangeAccumulator.trackChildChange(Change.childAddedChange(nextChild.name, nextChild.node));
-        }
-        return newEventCache.updateImmediateChild(nextChild.name, nextChild.node);
-      } else {
-        return newEventCache;
-      }
-    }
-  } else {
-    if (childSnap.isEmpty()) {
-      return snap;
-    } else {
-      if (inRange) {
-        if (cmp(windowBoundary, newChildNamedNode) >= 0) {
-          if (optChangeAccumulator != null) {
-            optChangeAccumulator.trackChildChange(Change.childRemovedChange(windowBoundary.name, windowBoundary.node));
-            optChangeAccumulator.trackChildChange(Change.childAddedChange(childKey, childSnap));
-          }
-          return oldEventCache.updateImmediateChild(childKey, childSnap).updateImmediateChild(windowBoundary.name, fb.core.snap.EMPTY_NODE);
-        } else {
-          return snap;
-        }
-      } else {
-        return snap;
-      }
-    }
-  }
-};
-goog.provide("fb.core.view.ViewProcessor");
-goog.require("fb.core.view.CompleteChildSource");
-goog.require("fb.core.util");
-fb.core.view.ProcessorResult = function(viewCache, changes) {
-  this.viewCache = viewCache;
-  this.changes = changes;
-};
-fb.core.view.ViewProcessor = function(filter) {
-  this.filter_ = filter;
-};
-fb.core.view.ViewProcessor.prototype.assertIndexed = function(viewCache) {
-  fb.core.util.assert(viewCache.getEventCache().getNode().isIndexed(this.filter_.getIndex()), "Event snap not indexed");
-  fb.core.util.assert(viewCache.getServerCache().getNode().isIndexed(this.filter_.getIndex()), "Server snap not indexed");
-};
-fb.core.view.ViewProcessor.prototype.applyOperation = function(oldViewCache, operation, writesCache, optCompleteCache) {
-  var accumulator = new fb.core.view.ChildChangeAccumulator;
-  var newViewCache, constrainNode;
-  if (operation.type === fb.core.OperationType.OVERWRITE) {
-    var overwrite = (operation);
-    if (overwrite.source.fromUser) {
-      newViewCache = this.applyUserOverwrite_(oldViewCache, overwrite.path, overwrite.snap, writesCache, optCompleteCache, accumulator);
-    } else {
-      fb.core.util.assert(overwrite.source.fromServer, "Unknown source.");
-      constrainNode = overwrite.source.tagged;
-      newViewCache = this.applyServerOverwrite_(oldViewCache, overwrite.path, overwrite.snap, writesCache, optCompleteCache, constrainNode, accumulator);
-    }
-  } else {
-    if (operation.type === fb.core.OperationType.MERGE) {
-      var merge = (operation);
-      if (merge.source.fromUser) {
-        newViewCache = this.applyUserMerge_(oldViewCache, merge.path, merge.children, writesCache, optCompleteCache, accumulator);
-      } else {
-        fb.core.util.assert(merge.source.fromServer, "Unknown source.");
-        constrainNode = merge.source.tagged;
-        newViewCache = this.applyServerMerge_(oldViewCache, merge.path, merge.children, writesCache, optCompleteCache, constrainNode, accumulator);
-      }
-    } else {
-      if (operation.type === fb.core.OperationType.ACK_USER_WRITE) {
-        var ackUserWrite = (operation);
-        if (!ackUserWrite.revert) {
-          newViewCache = this.ackUserWrite_(oldViewCache, ackUserWrite.path, writesCache, optCompleteCache, accumulator);
-        } else {
-          newViewCache = this.revertUserWrite_(oldViewCache, ackUserWrite.path, writesCache, optCompleteCache, accumulator);
-        }
-      } else {
-        if (operation.type === fb.core.OperationType.LISTEN_COMPLETE) {
-          newViewCache = this.listenComplete_(oldViewCache, operation.path, writesCache, optCompleteCache, accumulator);
-        } else {
-          throw fb.core.util.assertionError("Unknown operation type: " + operation.type);
-        }
-      }
-    }
-  }
-  var changes = accumulator.getChanges();
-  this.maybeAddValueEvent_(oldViewCache, newViewCache, changes);
-  return new fb.core.view.ProcessorResult(newViewCache, changes);
-};
-fb.core.view.ViewProcessor.prototype.maybeAddValueEvent_ = function(oldViewCache, newViewCache, accumulator) {
-  var eventSnap = newViewCache.getEventCache();
-  if (eventSnap.isFullyInitialized()) {
-    var isLeafOrEmpty = eventSnap.getNode().isLeafNode() || eventSnap.getNode().isEmpty();
-    var oldCompleteSnap = oldViewCache.getCompleteEventSnap();
-    if (accumulator.length > 0 || !oldViewCache.getEventCache().isFullyInitialized() || isLeafOrEmpty && !eventSnap.getNode().equals((oldCompleteSnap)) || !eventSnap.getNode().getPriority().equals(oldCompleteSnap.getPriority())) {
-      accumulator.push(fb.core.view.Change.valueChange((newViewCache.getCompleteEventSnap())));
-    }
-  }
-};
-fb.core.view.ViewProcessor.prototype.generateEventCacheAfterServerEvent_ = function(viewCache, changePath, writesCache, source, accumulator) {
-  var oldEventSnap = viewCache.getEventCache();
-  if (writesCache.shadowingWrite(changePath) != null) {
-    return viewCache;
-  } else {
-    var newEventCache, serverNode;
-    if (changePath.isEmpty()) {
-      fb.core.util.assert(viewCache.getServerCache().isFullyInitialized(), "If change path is empty, we must have complete server data");
-      if (viewCache.getServerCache().isFiltered()) {
-        var serverCache = viewCache.getCompleteServerSnap();
-        var completeChildren = serverCache instanceof fb.core.snap.ChildrenNode ? serverCache : fb.core.snap.EMPTY_NODE;
-        var completeEventChildren = writesCache.calcCompleteEventChildren(completeChildren);
-        newEventCache = this.filter_.updateFullNode(viewCache.getEventCache().getNode(), completeEventChildren, accumulator);
-      } else {
-        var completeNode = (writesCache.calcCompleteEventCache(viewCache.getCompleteServerSnap()));
-        newEventCache = this.filter_.updateFullNode(viewCache.getEventCache().getNode(), completeNode, accumulator);
-      }
-    } else {
-      var childKey = changePath.getFront();
-      if (childKey == ".priority") {
-        fb.core.util.assert(changePath.getLength() == 1, "Can't have a priority with additional path components");
-        var oldEventNode = oldEventSnap.getNode();
-        serverNode = viewCache.getServerCache().getNode();
-        var updatedPriority = writesCache.calcEventCacheAfterServerOverwrite(changePath, oldEventNode, serverNode);
-        if (updatedPriority != null) {
-          newEventCache = this.filter_.updatePriority(oldEventNode, updatedPriority);
-        } else {
-          newEventCache = oldEventSnap.getNode();
-        }
-      } else {
-        var childChangePath = changePath.popFront();
-        var newEventChild;
-        if (oldEventSnap.isCompleteForChild(childKey)) {
-          serverNode = viewCache.getServerCache().getNode();
-          var eventChildUpdate = writesCache.calcEventCacheAfterServerOverwrite(changePath, oldEventSnap.getNode(), serverNode);
-          if (eventChildUpdate != null) {
-            newEventChild = oldEventSnap.getNode().getImmediateChild(childKey).updateChild(childChangePath, eventChildUpdate);
-          } else {
-            newEventChild = oldEventSnap.getNode().getImmediateChild(childKey);
-          }
-        } else {
-          newEventChild = writesCache.calcCompleteChild(childKey, viewCache.getServerCache());
-        }
-        if (newEventChild != null) {
-          newEventCache = this.filter_.updateChild(oldEventSnap.getNode(), childKey, newEventChild, source, accumulator);
-        } else {
-          newEventCache = oldEventSnap.getNode();
-        }
-      }
-    }
-    return viewCache.updateEventSnap(newEventCache, oldEventSnap.isFullyInitialized() || changePath.isEmpty(), this.filter_.filtersNodes());
-  }
-};
-fb.core.view.ViewProcessor.prototype.applyServerOverwrite_ = function(oldViewCache, changePath, changedSnap, writesCache, optCompleteCache, constrainServerNode, accumulator) {
-  var oldServerSnap = oldViewCache.getServerCache();
-  var newServerCache;
-  var serverFilter = constrainServerNode ? this.filter_ : this.filter_.getIndexedFilter();
-  if (changePath.isEmpty()) {
-    newServerCache = serverFilter.updateFullNode(oldServerSnap.getNode(), changedSnap, null);
-  } else {
-    if (serverFilter.filtersNodes() && !oldServerSnap.isFiltered()) {
-      var newServerNode = oldServerSnap.getNode().updateChild(changePath, changedSnap);
-      newServerCache = serverFilter.updateFullNode(oldServerSnap.getNode(), newServerNode, null);
-    } else {
-      var childKey = changePath.getFront();
-      if (!oldServerSnap.isCompleteForPath(changePath) && changePath.getLength() > 1) {
-        return oldViewCache;
-      }
-      var childNode = oldServerSnap.getNode().getImmediateChild(childKey);
-      var newChildNode = childNode.updateChild(changePath.popFront(), changedSnap);
-      if (childKey == ".priority") {
-        newServerCache = serverFilter.updatePriority(oldServerSnap.getNode(), newChildNode);
-      } else {
-        newServerCache = serverFilter.updateChild(oldServerSnap.getNode(), childKey, newChildNode, fb.core.view.NO_COMPLETE_CHILD_SOURCE, null);
-      }
-    }
-  }
-  var newViewCache = oldViewCache.updateServerSnap(newServerCache, oldServerSnap.isFullyInitialized() || changePath.isEmpty(), serverFilter.filtersNodes());
-  var source = new fb.core.view.WriteTreeCompleteChildSource(writesCache, newViewCache, optCompleteCache);
-  return this.generateEventCacheAfterServerEvent_(newViewCache, changePath, writesCache, source, accumulator);
-};
-fb.core.view.ViewProcessor.prototype.applyUserOverwrite_ = function(oldViewCache, changePath, changedSnap, writesCache, optCompleteCache, accumulator) {
-  var oldEventSnap = oldViewCache.getEventCache();
-  var newViewCache, newEventCache;
-  var source = new fb.core.view.WriteTreeCompleteChildSource(writesCache, oldViewCache, optCompleteCache);
-  if (changePath.isEmpty()) {
-    newEventCache = this.filter_.updateFullNode(oldViewCache.getEventCache().getNode(), changedSnap, accumulator);
-    newViewCache = oldViewCache.updateEventSnap(newEventCache, true, this.filter_.filtersNodes());
-  } else {
-    var childKey = changePath.getFront();
-    if (childKey === ".priority") {
-      newEventCache = this.filter_.updatePriority(oldViewCache.getEventCache().getNode(), changedSnap);
-      newViewCache = oldViewCache.updateEventSnap(newEventCache, oldEventSnap.isFullyInitialized(), oldEventSnap.isFiltered());
-    } else {
-      var childChangePath = changePath.popFront();
-      var oldChild = oldEventSnap.getNode().getImmediateChild(childKey);
-      var newChild;
-      if (childChangePath.isEmpty()) {
-        newChild = changedSnap;
-      } else {
-        var childNode = source.getCompleteChild(childKey);
-        if (childNode != null) {
-          if (childChangePath.getBack() === ".priority" && childNode.getChild((childChangePath.parent())).isEmpty()) {
-            newChild = childNode;
-          } else {
-            newChild = childNode.updateChild(childChangePath, changedSnap);
-          }
-        } else {
-          newChild = fb.core.snap.EMPTY_NODE;
-        }
-      }
-      if (!oldChild.equals(newChild)) {
-        var newEventSnap = this.filter_.updateChild(oldEventSnap.getNode(), childKey, newChild, source, accumulator);
-        newViewCache = oldViewCache.updateEventSnap(newEventSnap, oldEventSnap.isFullyInitialized(), this.filter_.filtersNodes());
-      } else {
-        newViewCache = oldViewCache;
-      }
-    }
-  }
-  return newViewCache;
-};
-fb.core.view.ViewProcessor.cacheHasChild_ = function(viewCache, childKey) {
-  return viewCache.getEventCache().isCompleteForChild(childKey);
-};
-fb.core.view.ViewProcessor.prototype.applyUserMerge_ = function(viewCache, path, changedChildren, writesCache, serverCache, accumulator) {
-  var self = this;
-  var curViewCache = viewCache;
-  changedChildren.foreach(function(relativePath, childNode) {
-    var writePath = path.child(relativePath);
-    if (fb.core.view.ViewProcessor.cacheHasChild_(viewCache, writePath.getFront())) {
-      curViewCache = self.applyUserOverwrite_(curViewCache, writePath, childNode, writesCache, serverCache, accumulator);
-    }
-  });
-  changedChildren.foreach(function(relativePath, childNode) {
-    var writePath = path.child(relativePath);
-    if (!fb.core.view.ViewProcessor.cacheHasChild_(viewCache, writePath.getFront())) {
-      curViewCache = self.applyUserOverwrite_(curViewCache, writePath, childNode, writesCache, serverCache, accumulator);
-    }
-  });
-  return curViewCache;
-};
-fb.core.view.ViewProcessor.prototype.applyMerge_ = function(node, merge) {
-  merge.foreach(function(relativePath, childNode) {
-    node = node.updateChild(relativePath, childNode);
-  });
-  return node;
-};
-fb.core.view.ViewProcessor.prototype.applyServerMerge_ = function(viewCache, path, changedChildren, writesCache, serverCache, constrainServerNode, accumulator) {
-  if (viewCache.getServerCache().getNode().isEmpty() && !viewCache.getServerCache().isFullyInitialized()) {
-    return viewCache;
-  }
-  var curViewCache = viewCache;
-  var viewMergeTree;
-  if (path.isEmpty()) {
-    viewMergeTree = changedChildren;
-  } else {
-    viewMergeTree = fb.core.util.ImmutableTree.Empty.setTree(path, changedChildren);
-  }
-  var serverNode = viewCache.getServerCache().getNode();
-  var self = this;
-  viewMergeTree.children.inorderTraversal(function(childKey, childTree) {
-    if (serverNode.hasChild(childKey)) {
-      var serverChild = viewCache.getServerCache().getNode().getImmediateChild(childKey);
-      var newChild = self.applyMerge_(serverChild, childTree);
-      curViewCache = self.applyServerOverwrite_(curViewCache, new fb.core.util.Path(childKey), newChild, writesCache, serverCache, constrainServerNode, accumulator);
-    }
-  });
-  viewMergeTree.children.inorderTraversal(function(childKey, childMergeTree) {
-    var isUnknownDeepMerge = !viewCache.getServerCache().isFullyInitialized() && childMergeTree.value == null;
-    if (!serverNode.hasChild(childKey) && !isUnknownDeepMerge) {
-      var serverChild = viewCache.getServerCache().getNode().getImmediateChild(childKey);
-      var newChild = self.applyMerge_(serverChild, childMergeTree);
-      curViewCache = self.applyServerOverwrite_(curViewCache, new fb.core.util.Path(childKey), newChild, writesCache, serverCache, constrainServerNode, accumulator);
-    }
-  });
-  return curViewCache;
-};
-fb.core.view.ViewProcessor.prototype.ackUserWrite_ = function(viewCache, ackPath, writesCache, optCompleteCache, accumulator) {
-  if (writesCache.shadowingWrite(ackPath) != null) {
-    return viewCache;
-  } else {
-    var source = new fb.core.view.WriteTreeCompleteChildSource(writesCache, viewCache, optCompleteCache);
-    var oldEventCache = viewCache.getEventCache().getNode();
-    var newEventCache = oldEventCache;
-    var eventCacheComplete;
-    if (viewCache.getServerCache().isFullyInitialized()) {
-      if (ackPath.isEmpty()) {
-        var update = (writesCache.calcCompleteEventCache(viewCache.getCompleteServerSnap()));
-        newEventCache = this.filter_.updateFullNode(viewCache.getEventCache().getNode(), update, accumulator);
-      } else {
-        if (ackPath.getFront() === ".priority") {
-          var updatedPriority = writesCache.calcCompleteChild(ackPath.getFront(), viewCache.getServerCache());
-          if (updatedPriority != null && !oldEventCache.isEmpty() && !oldEventCache.getPriority().equals(updatedPriority)) {
-            newEventCache = this.filter_.updatePriority(oldEventCache, updatedPriority);
-          }
-        } else {
-          var childKey = ackPath.getFront();
-          var updatedChild = writesCache.calcCompleteChild(childKey, viewCache.getServerCache());
-          if (updatedChild != null) {
-            newEventCache = this.filter_.updateChild(viewCache.getEventCache().getNode(), childKey, updatedChild, source, accumulator);
-          }
-        }
-      }
-      eventCacheComplete = true;
-    } else {
-      if (viewCache.getEventCache().isFullyInitialized() || ackPath.isEmpty()) {
-        newEventCache = oldEventCache;
-        var completeEventSnap = viewCache.getEventCache().getNode();
-        if (!completeEventSnap.isLeafNode()) {
-          var self = this;
-          completeEventSnap = (completeEventSnap);
-          completeEventSnap.forEachChild(fb.core.snap.PriorityIndex, function(key, childNode) {
-            var completeChild = writesCache.calcCompleteChild(key, viewCache.getServerCache());
-            if (completeChild != null) {
-              newEventCache = self.filter_.updateChild(newEventCache, key, completeChild, source, accumulator);
-            }
-          });
-        }
-        eventCacheComplete = viewCache.getEventCache().isFullyInitialized();
-      } else {
-        var childKey = ackPath.getFront();
-        if (ackPath.getLength() == 1 || viewCache.getEventCache().isCompleteForChild(childKey)) {
-          var completeChild = writesCache.calcCompleteChild(childKey, viewCache.getServerCache());
-          if (completeChild != null) {
-            newEventCache = this.filter_.updateChild(oldEventCache, childKey, completeChild, source, accumulator);
-          }
-        }
-        eventCacheComplete = false;
-      }
-    }
-    return viewCache.updateEventSnap(newEventCache, eventCacheComplete, this.filter_.filtersNodes());
-  }
-};
-fb.core.view.ViewProcessor.prototype.revertUserWrite_ = function(viewCache, path, writesCache, optCompleteServerCache, accumulator) {
-  var complete;
-  if (writesCache.shadowingWrite(path) != null) {
-    return viewCache;
-  } else {
-    var source = new fb.core.view.WriteTreeCompleteChildSource(writesCache, viewCache, optCompleteServerCache);
-    var oldEventCache = viewCache.getEventCache().getNode();
-    var newEventCache;
-    if (path.isEmpty() || path.getFront() === ".priority") {
-      var newNode;
-      if (viewCache.getServerCache().isFullyInitialized()) {
-        newNode = writesCache.calcCompleteEventCache(viewCache.getCompleteServerSnap());
-      } else {
-        var serverChildren = viewCache.getServerCache().getNode();
-        fb.core.util.assert(serverChildren instanceof fb.core.snap.ChildrenNode, "serverChildren would be complete if leaf node");
-        newNode = writesCache.calcCompleteEventChildren((serverChildren));
-      }
-      newNode = (newNode);
-      newEventCache = this.filter_.updateFullNode(oldEventCache, newNode, accumulator);
-    } else {
-      var childKey = path.getFront();
-      var newChild = writesCache.calcCompleteChild(childKey, viewCache.getServerCache());
-      if (newChild == null && viewCache.getServerCache().isCompleteForChild(childKey)) {
-        newChild = oldEventCache.getImmediateChild(childKey);
-      }
-      if (newChild != null) {
-        newEventCache = this.filter_.updateChild(oldEventCache, childKey, newChild, source, accumulator);
-      } else {
-        if (viewCache.getEventCache().getNode().hasChild(childKey)) {
-          newEventCache = this.filter_.updateChild(oldEventCache, childKey, fb.core.snap.EMPTY_NODE, source, accumulator);
-        } else {
-          newEventCache = oldEventCache;
-        }
-      }
-      if (newEventCache.isEmpty() && viewCache.getServerCache().isFullyInitialized()) {
-        complete = writesCache.calcCompleteEventCache(viewCache.getCompleteServerSnap());
-        if (complete.isLeafNode()) {
-          newEventCache = this.filter_.updateFullNode(newEventCache, complete, accumulator);
-        }
-      }
-    }
-    complete = viewCache.getServerCache().isFullyInitialized() || writesCache.shadowingWrite(fb.core.util.Path.Empty) != null;
-    return viewCache.updateEventSnap(newEventCache, complete, this.filter_.filtersNodes());
-  }
-};
-fb.core.view.ViewProcessor.prototype.listenComplete_ = function(viewCache, path, writesCache, serverCache, accumulator) {
-  var oldServerNode = viewCache.getServerCache();
-  var newViewCache = viewCache.updateServerSnap(oldServerNode.getNode(), oldServerNode.isFullyInitialized() || path.isEmpty(), oldServerNode.isFiltered());
-  return this.generateEventCacheAfterServerEvent_(newViewCache, path, writesCache, fb.core.view.NO_COMPLETE_CHILD_SOURCE, accumulator);
-};
-goog.provide("fb.core.snap.Index");
-goog.provide("fb.core.snap.PriorityIndex");
-goog.provide("fb.core.snap.SubKeyIndex");
-goog.require("fb.core.snap.comparators");
-goog.require("fb.core.util");
-fb.core.snap.Index = function() {
-};
-fb.core.snap.Index.FallbackType;
-fb.core.snap.Index.Fallback = {};
-fb.core.snap.Index.prototype.compare = goog.abstractMethod;
-fb.core.snap.Index.prototype.isDefinedOn = goog.abstractMethod;
-fb.core.snap.Index.prototype.getCompare = function() {
-  return goog.bind(this.compare, this);
-};
-fb.core.snap.Index.prototype.indexedValueChanged = function(oldNode, newNode) {
-  var oldWrapped = new fb.core.snap.NamedNode(fb.core.util.MIN_NAME, oldNode);
-  var newWrapped = new fb.core.snap.NamedNode(fb.core.util.MIN_NAME, newNode);
-  return this.compare(oldWrapped, newWrapped) !== 0;
-};
-fb.core.snap.Index.prototype.minPost = function() {
-  return fb.core.snap.NamedNode.MIN;
-};
-fb.core.snap.Index.prototype.maxPost = goog.abstractMethod;
-fb.core.snap.Index.prototype.makePost = goog.abstractMethod;
-fb.core.snap.Index.prototype.toString = goog.abstractMethod;
-fb.core.snap.SubKeyIndex = function(indexKey) {
-  fb.core.snap.Index.call(this);
-  this.indexKey_ = indexKey;
-};
-goog.inherits(fb.core.snap.SubKeyIndex, fb.core.snap.Index);
-fb.core.snap.SubKeyIndex.prototype.extractChild = function(snap) {
-  return snap.getImmediateChild(this.indexKey_);
-};
-fb.core.snap.SubKeyIndex.prototype.isDefinedOn = function(node) {
-  return!node.getImmediateChild(this.indexKey_).isEmpty();
-};
-fb.core.snap.SubKeyIndex.prototype.compare = function(a, b) {
-  var aChild = this.extractChild(a.node);
-  var bChild = this.extractChild(b.node);
-  var indexCmp = aChild.compareTo(bChild);
-  if (indexCmp === 0) {
-    return fb.core.util.nameCompare(a.name, b.name);
-  } else {
-    return indexCmp;
-  }
-};
-fb.core.snap.SubKeyIndex.prototype.makePost = function(indexValue, name) {
-  var valueNode = fb.core.snap.NodeFromJSON(indexValue);
-  var node = fb.core.snap.EMPTY_NODE.updateImmediateChild(this.indexKey_, valueNode);
-  return new fb.core.snap.NamedNode(name, node);
-};
-fb.core.snap.SubKeyIndex.prototype.maxPost = function() {
-  var node = fb.core.snap.EMPTY_NODE.updateImmediateChild(this.indexKey_, fb.core.snap.MAX_NODE);
-  return new fb.core.snap.NamedNode(fb.core.util.MAX_NAME, node);
-};
-fb.core.snap.SubKeyIndex.prototype.toString = function() {
-  return this.indexKey_;
-};
-fb.core.snap.PriorityIndex_ = function() {
-  fb.core.snap.Index.call(this);
-};
-goog.inherits(fb.core.snap.PriorityIndex_, fb.core.snap.Index);
-fb.core.snap.PriorityIndex_.prototype.compare = function(a, b) {
-  var aPriority = a.node.getPriority();
-  var bPriority = b.node.getPriority();
-  var indexCmp = aPriority.compareTo(bPriority);
-  if (indexCmp === 0) {
-    return fb.core.util.nameCompare(a.name, b.name);
-  } else {
-    return indexCmp;
-  }
-};
-fb.core.snap.PriorityIndex_.prototype.isDefinedOn = function(node) {
-  return!node.getPriority().isEmpty();
-};
-fb.core.snap.PriorityIndex_.prototype.indexedValueChanged = function(oldNode, newNode) {
-  return!oldNode.getPriority().equals(newNode.getPriority());
-};
-fb.core.snap.PriorityIndex_.prototype.minPost = function() {
-  return fb.core.snap.NamedNode.MIN;
-};
-fb.core.snap.PriorityIndex_.prototype.maxPost = function() {
-  return new fb.core.snap.NamedNode(fb.core.util.MAX_NAME, new fb.core.snap.LeafNode("[PRIORITY-POST]", fb.core.snap.MAX_NODE));
-};
-fb.core.snap.PriorityIndex_.prototype.makePost = function(indexValue, name) {
-  var priorityNode = fb.core.snap.NodeFromJSON(indexValue);
-  return new fb.core.snap.NamedNode(name, new fb.core.snap.LeafNode("[PRIORITY-POST]", priorityNode));
-};
-fb.core.snap.PriorityIndex_.prototype.toString = function() {
-  return ".priority";
-};
-fb.core.snap.PriorityIndex = new fb.core.snap.PriorityIndex_;
-fb.core.snap.KeyIndex_ = function() {
-  fb.core.snap.Index.call(this);
-};
-goog.inherits(fb.core.snap.KeyIndex_, fb.core.snap.Index);
-fb.core.snap.KeyIndex_.prototype.compare = function(a, b) {
-  return fb.core.util.nameCompare(a.name, b.name);
-};
-fb.core.snap.KeyIndex_.prototype.isDefinedOn = function(node) {
-  throw fb.core.util.assertionError("KeyIndex.isDefinedOn not expected to be called.");
-};
-fb.core.snap.KeyIndex_.prototype.indexedValueChanged = function(oldNode, newNode) {
-  return false;
-};
-fb.core.snap.KeyIndex_.prototype.minPost = function() {
-  return fb.core.snap.NamedNode.MIN;
-};
-fb.core.snap.KeyIndex_.prototype.maxPost = function() {
-  return new fb.core.snap.NamedNode(fb.core.util.MAX_NAME, fb.core.snap.EMPTY_NODE);
-};
-fb.core.snap.KeyIndex_.prototype.makePost = function(indexValue, name) {
-  fb.core.util.assert(goog.isString(indexValue), "KeyIndex indexValue must always be a string.");
-  return new fb.core.snap.NamedNode((indexValue), fb.core.snap.EMPTY_NODE);
-};
-fb.core.snap.KeyIndex_.prototype.toString = function() {
-  return ".key";
-};
-fb.core.snap.KeyIndex = new fb.core.snap.KeyIndex_;
-fb.core.snap.ValueIndex_ = function() {
-  fb.core.snap.Index.call(this);
-};
-goog.inherits(fb.core.snap.ValueIndex_, fb.core.snap.Index);
-fb.core.snap.ValueIndex_.prototype.compare = function(a, b) {
-  var indexCmp = a.node.compareTo(b.node);
-  if (indexCmp === 0) {
-    return fb.core.util.nameCompare(a.name, b.name);
-  } else {
-    return indexCmp;
-  }
-};
-fb.core.snap.ValueIndex_.prototype.isDefinedOn = function(node) {
-  return true;
-};
-fb.core.snap.ValueIndex_.prototype.indexedValueChanged = function(oldNode, newNode) {
-  return!oldNode.equals(newNode);
-};
-fb.core.snap.ValueIndex_.prototype.minPost = function() {
-  return fb.core.snap.NamedNode.MIN;
-};
-fb.core.snap.ValueIndex_.prototype.maxPost = function() {
-  return fb.core.snap.NamedNode.MAX;
-};
-fb.core.snap.ValueIndex_.prototype.makePost = function(indexValue, name) {
-  var valueNode = fb.core.snap.NodeFromJSON(indexValue);
-  return new fb.core.snap.NamedNode(name, valueNode);
-};
-fb.core.snap.ValueIndex_.prototype.toString = function() {
-  return ".value";
-};
-fb.core.snap.ValueIndex = new fb.core.snap.ValueIndex_;
-goog.provide("fb.core.view.QueryParams");
-goog.require("fb.core.snap.Index");
-goog.require("fb.core.snap.PriorityIndex");
-goog.require("fb.core.util");
-goog.require("fb.core.view.filter.IndexedFilter");
-goog.require("fb.core.view.filter.LimitedFilter");
-goog.require("fb.core.view.filter.NodeFilter");
-goog.require("fb.core.view.filter.RangedFilter");
-fb.core.view.QueryParams = function() {
-  this.limitSet_ = false;
-  this.startSet_ = false;
-  this.startNameSet_ = false;
-  this.endSet_ = false;
-  this.endNameSet_ = false;
-  this.limit_ = 0;
-  this.viewFrom_ = "";
-  this.indexStartValue_ = null;
-  this.indexStartName_ = "";
-  this.indexEndValue_ = null;
-  this.indexEndName_ = "";
-  this.index_ = fb.core.snap.PriorityIndex;
-};
-fb.core.view.QueryParams.WIRE_PROTOCOL_CONSTANTS_ = {INDEX_START_VALUE:"sp", INDEX_START_NAME:"sn", INDEX_END_VALUE:"ep", INDEX_END_NAME:"en", LIMIT:"l", VIEW_FROM:"vf", VIEW_FROM_LEFT:"l", VIEW_FROM_RIGHT:"r", INDEX:"i"};
-fb.core.view.QueryParams.REST_QUERY_CONSTANTS_ = {ORDER_BY:"orderBy", PRIORITY_INDEX:"$priority", VALUE_INDEX:"$value", START_AT:"startAt", END_AT:"endAt", LIMIT_TO_FIRST:"limitToFirst", LIMIT_TO_LAST:"limitToLast"};
-fb.core.view.QueryParams.DEFAULT = new fb.core.view.QueryParams;
-fb.core.view.QueryParams.prototype.hasStart = function() {
-  return this.startSet_;
-};
-fb.core.view.QueryParams.prototype.isViewFromLeft = function() {
-  if (this.viewFrom_ === "") {
-    return this.startSet_;
-  } else {
-    return this.viewFrom_ === fb.core.view.QueryParams.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT;
-  }
-};
-fb.core.view.QueryParams.prototype.getIndexStartValue = function() {
-  fb.core.util.assert(this.startSet_, "Only valid if start has been set");
-  return this.indexStartValue_;
-};
-fb.core.view.QueryParams.prototype.getIndexStartName = function() {
-  fb.core.util.assert(this.startSet_, "Only valid if start has been set");
-  if (this.startNameSet_) {
-    return this.indexStartName_;
-  } else {
-    return fb.core.util.MIN_NAME;
-  }
-};
-fb.core.view.QueryParams.prototype.hasEnd = function() {
-  return this.endSet_;
-};
-fb.core.view.QueryParams.prototype.getIndexEndValue = function() {
-  fb.core.util.assert(this.endSet_, "Only valid if end has been set");
-  return this.indexEndValue_;
-};
-fb.core.view.QueryParams.prototype.getIndexEndName = function() {
-  fb.core.util.assert(this.endSet_, "Only valid if end has been set");
-  if (this.endNameSet_) {
-    return this.indexEndName_;
-  } else {
-    return fb.core.util.MAX_NAME;
-  }
-};
-fb.core.view.QueryParams.prototype.hasLimit = function() {
-  return this.limitSet_;
-};
-fb.core.view.QueryParams.prototype.hasAnchoredLimit = function() {
-  return this.limitSet_ && this.viewFrom_ !== "";
-};
-fb.core.view.QueryParams.prototype.getLimit = function() {
-  fb.core.util.assert(this.limitSet_, "Only valid if limit has been set");
-  return this.limit_;
-};
-fb.core.view.QueryParams.prototype.getIndex = function() {
-  return this.index_;
-};
-fb.core.view.QueryParams.prototype.copy_ = function() {
-  var copy = new fb.core.view.QueryParams;
-  copy.limitSet_ = this.limitSet_;
-  copy.limit_ = this.limit_;
-  copy.startSet_ = this.startSet_;
-  copy.indexStartValue_ = this.indexStartValue_;
-  copy.startNameSet_ = this.startNameSet_;
-  copy.indexStartName_ = this.indexStartName_;
-  copy.endSet_ = this.endSet_;
-  copy.indexEndValue_ = this.indexEndValue_;
-  copy.endNameSet_ = this.endNameSet_;
-  copy.indexEndName_ = this.indexEndName_;
-  copy.index_ = this.index_;
-  return copy;
-};
-fb.core.view.QueryParams.prototype.limit = function(newLimit) {
-  var newParams = this.copy_();
-  newParams.limitSet_ = true;
-  newParams.limit_ = newLimit;
-  newParams.viewFrom_ = "";
-  return newParams;
-};
-fb.core.view.QueryParams.prototype.limitToFirst = function(newLimit) {
-  var newParams = this.copy_();
-  newParams.limitSet_ = true;
-  newParams.limit_ = newLimit;
-  newParams.viewFrom_ = fb.core.view.QueryParams.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT;
-  return newParams;
-};
-fb.core.view.QueryParams.prototype.limitToLast = function(newLimit) {
-  var newParams = this.copy_();
-  newParams.limitSet_ = true;
-  newParams.limit_ = newLimit;
-  newParams.viewFrom_ = fb.core.view.QueryParams.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_RIGHT;
-  return newParams;
-};
-fb.core.view.QueryParams.prototype.startAt = function(indexValue, key) {
-  var newParams = this.copy_();
-  newParams.startSet_ = true;
-  if (!goog.isDef(indexValue)) {
-    indexValue = null;
-  }
-  newParams.indexStartValue_ = indexValue;
-  if (key != null) {
-    newParams.startNameSet_ = true;
-    newParams.indexStartName_ = key;
-  } else {
-    newParams.startNameSet_ = false;
-    newParams.indexStartName_ = "";
-  }
-  return newParams;
-};
-fb.core.view.QueryParams.prototype.endAt = function(indexValue, key) {
-  var newParams = this.copy_();
-  newParams.endSet_ = true;
-  if (!goog.isDef(indexValue)) {
-    indexValue = null;
-  }
-  newParams.indexEndValue_ = indexValue;
-  if (goog.isDef(key)) {
-    newParams.endNameSet_ = true;
-    newParams.indexEndName_ = key;
-  } else {
-    newParams.startEndSet_ = false;
-    newParams.indexEndName_ = "";
-  }
-  return newParams;
-};
-fb.core.view.QueryParams.prototype.orderBy = function(index) {
-  var newParams = this.copy_();
-  newParams.index_ = index;
-  return newParams;
-};
-fb.core.view.QueryParams.prototype.getQueryObject = function() {
-  var WIRE_PROTOCOL_CONSTANTS = fb.core.view.QueryParams.WIRE_PROTOCOL_CONSTANTS_;
-  var obj = {};
-  if (this.startSet_) {
-    obj[WIRE_PROTOCOL_CONSTANTS.INDEX_START_VALUE] = this.indexStartValue_;
-    if (this.startNameSet_) {
-      obj[WIRE_PROTOCOL_CONSTANTS.INDEX_START_NAME] = this.indexStartName_;
-    }
-  }
-  if (this.endSet_) {
-    obj[WIRE_PROTOCOL_CONSTANTS.INDEX_END_VALUE] = this.indexEndValue_;
-    if (this.endNameSet_) {
-      obj[WIRE_PROTOCOL_CONSTANTS.INDEX_END_NAME] = this.indexEndName_;
-    }
-  }
-  if (this.limitSet_) {
-    obj[WIRE_PROTOCOL_CONSTANTS.LIMIT] = this.limit_;
-    var viewFrom = this.viewFrom_;
-    if (viewFrom === "") {
-      if (this.isViewFromLeft()) {
-        viewFrom = WIRE_PROTOCOL_CONSTANTS.VIEW_FROM_LEFT;
-      } else {
-        viewFrom = WIRE_PROTOCOL_CONSTANTS.VIEW_FROM_RIGHT;
-      }
-    }
-    obj[WIRE_PROTOCOL_CONSTANTS.VIEW_FROM] = viewFrom;
-  }
-  if (this.index_ !== fb.core.snap.PriorityIndex) {
-    obj[WIRE_PROTOCOL_CONSTANTS.INDEX] = this.index_.toString();
-  }
-  return obj;
-};
-fb.core.view.QueryParams.prototype.loadsAllData = function() {
-  return!(this.startSet_ || this.endSet_ || this.limitSet_);
-};
-fb.core.view.QueryParams.prototype.isDefault = function() {
-  return this.loadsAllData() && this.index_ == fb.core.snap.PriorityIndex;
-};
-fb.core.view.QueryParams.prototype.getNodeFilter = function() {
-  if (this.loadsAllData()) {
-    return new fb.core.view.filter.IndexedFilter(this.getIndex());
-  } else {
-    if (this.hasLimit()) {
-      return new fb.core.view.filter.LimitedFilter(this);
-    } else {
-      return new fb.core.view.filter.RangedFilter(this);
-    }
-  }
-};
-fb.core.view.QueryParams.prototype.toRestQueryStringParameters = function() {
-  var REST_CONSTANTS = fb.core.view.QueryParams.REST_QUERY_CONSTANTS_;
-  var qs = {};
-  if (this.isDefault()) {
-    return qs;
-  }
-  var orderBy;
-  if (this.index_ === fb.core.snap.PriorityIndex) {
-    orderBy = REST_CONSTANTS.PRIORITY_INDEX;
-  } else {
-    if (this.index_ === fb.core.snap.ValueIndex) {
-      orderBy = REST_CONSTANTS.VALUE_INDEX;
-    } else {
-      fb.core.util.assert(this.index_ instanceof fb.core.snap.SubKeyIndex, "Unrecognized index type!");
-      orderBy = this.index_.toString();
-    }
-  }
-  qs[REST_CONSTANTS.ORDER_BY] = fb.util.json.stringify(orderBy);
-  if (this.startSet_) {
-    qs[REST_CONSTANTS.START_AT] = fb.util.json.stringify(this.indexStartValue_);
-    if (this.startNameSet_) {
-      qs[REST_CONSTANTS.START_AT] += "," + fb.util.json.stringify(this.indexStartName_);
-    }
-  }
-  if (this.endSet_) {
-    qs[REST_CONSTANTS.END_AT] = fb.util.json.stringify(this.indexEndValue_);
-    if (this.endNameSet_) {
-      qs[REST_CONSTANTS.END_AT] += "," + fb.util.json.stringify(this.indexEndName_);
-    }
-  }
-  if (this.limitSet_) {
-    if (this.isViewFromLeft()) {
-      qs[REST_CONSTANTS.LIMIT_TO_FIRST] = this.limit_;
-    } else {
-      qs[REST_CONSTANTS.LIMIT_TO_LAST] = this.limit_;
-    }
-  }
-  return qs;
-};
-if (goog.DEBUG) {
-  fb.core.view.QueryParams.prototype.toString = function() {
-    return fb.util.json.stringify(this.getQueryObject());
-  };
-}
-;goog.provide("fb.core.snap.IndexMap");
-goog.require("fb.core.snap.Index");
-goog.require("fb.core.util");
-fb.core.snap.IndexMap = function(indexes, indexSet) {
-  this.indexes_ = indexes;
-  this.indexSet_ = indexSet;
-};
-fb.core.snap.IndexMap.prototype.get = function(indexKey) {
-  var sortedMap = fb.util.obj.get(this.indexes_, indexKey);
-  if (!sortedMap) {
-    throw new Error("No index defined for " + indexKey);
-  }
-  if (sortedMap === fb.core.snap.Index.Fallback) {
-    return null;
-  } else {
-    return sortedMap;
-  }
-};
-fb.core.snap.IndexMap.prototype.hasIndex = function(indexDefinition) {
-  return goog.object.contains(this.indexSet_, indexDefinition.toString());
-};
-fb.core.snap.IndexMap.prototype.addIndex = function(indexDefinition, existingChildren) {
-  fb.core.util.assert(indexDefinition !== fb.core.snap.KeyIndex, "KeyIndex always exists and isn't meant to be added to the IndexMap.");
-  var childList = [];
-  var sawIndexedValue = false;
-  var iter = existingChildren.getIterator(fb.core.snap.NamedNode.Wrap);
-  var next = iter.getNext();
-  while (next) {
-    sawIndexedValue = sawIndexedValue || indexDefinition.isDefinedOn(next.node);
-    childList.push(next);
-    next = iter.getNext();
-  }
-  var newIndex;
-  if (sawIndexedValue) {
-    newIndex = fb.core.snap.buildChildSet(childList, indexDefinition.getCompare());
-  } else {
-    newIndex = fb.core.snap.Index.Fallback;
-  }
-  var indexName = indexDefinition.toString();
-  var newIndexSet = goog.object.clone(this.indexSet_);
-  newIndexSet[indexName] = indexDefinition;
-  var newIndexes = goog.object.clone(this.indexes_);
-  newIndexes[indexName] = newIndex;
-  return new fb.core.snap.IndexMap(newIndexes, newIndexSet);
-};
-fb.core.snap.IndexMap.prototype.addToIndexes = function(namedNode, existingChildren) {
-  var self = this;
-  var newIndexes = goog.object.map(this.indexes_, function(indexedChildren, indexName) {
-    var index = fb.util.obj.get(self.indexSet_, indexName);
-    fb.core.util.assert(index, "Missing index implementation for " + indexName);
-    if (indexedChildren === fb.core.snap.Index.Fallback) {
-      if (index.isDefinedOn(namedNode.node)) {
-        var childList = [];
-        var iter = existingChildren.getIterator(fb.core.snap.NamedNode.Wrap);
-        var next = iter.getNext();
-        while (next) {
-          if (next.name != namedNode.name) {
-            childList.push(next);
-          }
-          next = iter.getNext();
-        }
-        childList.push(namedNode);
-        return fb.core.snap.buildChildSet(childList, index.getCompare());
-      } else {
-        return fb.core.snap.Index.Fallback;
-      }
-    } else {
-      var existingSnap = existingChildren.get(namedNode.name);
-      var newChildren = indexedChildren;
-      if (existingSnap) {
-        newChildren = newChildren.remove(new fb.core.snap.NamedNode(namedNode.name, existingSnap));
-      }
-      return newChildren.insert(namedNode, namedNode.node);
-    }
-  });
-  return new fb.core.snap.IndexMap(newIndexes, this.indexSet_);
-};
-fb.core.snap.IndexMap.prototype.removeFromIndexes = function(namedNode, existingChildren) {
-  var newIndexes = goog.object.map(this.indexes_, function(indexedChildren) {
-    if (indexedChildren === fb.core.snap.Index.Fallback) {
-      return indexedChildren;
-    } else {
-      var existingSnap = existingChildren.get(namedNode.name);
-      if (existingSnap) {
-        return indexedChildren.remove(new fb.core.snap.NamedNode(namedNode.name, existingSnap));
-      } else {
-        return indexedChildren;
-      }
-    }
-  });
-  return new fb.core.snap.IndexMap(newIndexes, this.indexSet_);
-};
-fb.core.snap.IndexMap.Default = new fb.core.snap.IndexMap({".priority":fb.core.snap.Index.Fallback}, {".priority":fb.core.snap.PriorityIndex});
-goog.provide("fb.core.snap.LeafNode");
-goog.require("fb.core.snap.Node");
-goog.require("fb.core.util");
-fb.core.snap.LeafNode = function(value, opt_priorityNode) {
-  this.value_ = value;
-  fb.core.util.assert(goog.isDef(this.value_) && this.value_ !== null, "LeafNode shouldn't be created with null/undefined value.");
-  this.priorityNode_ = opt_priorityNode || fb.core.snap.EMPTY_NODE;
-  fb.core.snap.validatePriorityNode(this.priorityNode_);
-  this.lazyHash_ = null;
-};
-fb.core.snap.LeafNode.prototype.isLeafNode = function() {
-  return true;
-};
-fb.core.snap.LeafNode.prototype.getPriority = function() {
-  return this.priorityNode_;
-};
-fb.core.snap.LeafNode.prototype.updatePriority = function(newPriorityNode) {
-  return new fb.core.snap.LeafNode(this.value_, newPriorityNode);
-};
-fb.core.snap.LeafNode.prototype.getImmediateChild = function(childName) {
-  if (childName === ".priority") {
-    return this.priorityNode_;
-  } else {
-    return fb.core.snap.EMPTY_NODE;
-  }
-};
-fb.core.snap.LeafNode.prototype.getChild = function(path) {
-  if (path.isEmpty()) {
-    return this;
-  } else {
-    if (path.getFront() === ".priority") {
-      return this.priorityNode_;
-    } else {
-      return fb.core.snap.EMPTY_NODE;
-    }
-  }
-};
-fb.core.snap.LeafNode.prototype.hasChild = function() {
-  return false;
-};
-fb.core.snap.LeafNode.prototype.getPredecessorChildName = function(childName, childNode) {
-  return null;
-};
-fb.core.snap.LeafNode.prototype.updateImmediateChild = function(childName, newChildNode) {
-  if (childName === ".priority") {
-    return this.updatePriority(newChildNode);
-  } else {
-    if (newChildNode.isEmpty() && childName !== ".priority") {
-      return this;
-    } else {
-      return fb.core.snap.EMPTY_NODE.updateImmediateChild(childName, newChildNode).updatePriority(this.priorityNode_);
-    }
-  }
-};
-fb.core.snap.LeafNode.prototype.updateChild = function(path, newChildNode) {
-  var front = path.getFront();
-  if (front === null) {
-    return newChildNode;
-  } else {
-    if (newChildNode.isEmpty() && front !== ".priority") {
-      return this;
-    } else {
-      fb.core.util.assert(front !== ".priority" || path.getLength() === 1, ".priority must be the last token in a path");
-      return this.updateImmediateChild(front, fb.core.snap.EMPTY_NODE.updateChild(path.popFront(), newChildNode));
-    }
-  }
-};
-fb.core.snap.LeafNode.prototype.isEmpty = function() {
-  return false;
-};
-fb.core.snap.LeafNode.prototype.numChildren = function() {
-  return 0;
-};
-fb.core.snap.LeafNode.prototype.val = function(opt_exportFormat) {
-  if (opt_exportFormat && !this.getPriority().isEmpty()) {
-    return{".value":this.getValue(), ".priority":this.getPriority().val()};
-  } else {
-    return this.getValue();
-  }
-};
-fb.core.snap.LeafNode.prototype.hash = function() {
-  if (this.lazyHash_ === null) {
-    var toHash = "";
-    if (!this.priorityNode_.isEmpty()) {
-      toHash += "priority:" + fb.core.snap.priorityHashText((this.priorityNode_.val())) + ":";
-    }
-    var type = typeof this.value_;
-    toHash += type + ":";
-    if (type === "number") {
-      toHash += fb.core.util.doubleToIEEE754String((this.value_));
-    } else {
-      toHash += this.value_;
-    }
-    this.lazyHash_ = fb.core.util.sha1(toHash);
-  }
-  return(this.lazyHash_);
-};
-fb.core.snap.LeafNode.prototype.getValue = function() {
-  return this.value_;
-};
-fb.core.snap.LeafNode.prototype.compareTo = function(other) {
-  if (other === fb.core.snap.EMPTY_NODE) {
-    return 1;
-  } else {
-    if (other instanceof fb.core.snap.ChildrenNode) {
-      return-1;
-    } else {
-      fb.core.util.assert(other.isLeafNode(), "Unknown node type");
-      return this.compareToLeafNode_((other));
-    }
-  }
-};
-fb.core.snap.LeafNode.VALUE_TYPE_ORDER = ["object", "boolean", "number", "string"];
-fb.core.snap.LeafNode.prototype.compareToLeafNode_ = function(otherLeaf) {
-  var otherLeafType = typeof otherLeaf.value_;
-  var thisLeafType = typeof this.value_;
-  var otherIndex = goog.array.indexOf(fb.core.snap.LeafNode.VALUE_TYPE_ORDER, otherLeafType);
-  var thisIndex = goog.array.indexOf(fb.core.snap.LeafNode.VALUE_TYPE_ORDER, thisLeafType);
-  fb.core.util.assert(otherIndex >= 0, "Unknown leaf type: " + otherLeafType);
-  fb.core.util.assert(thisIndex >= 0, "Unknown leaf type: " + thisLeafType);
-  if (otherIndex === thisIndex) {
-    if (thisLeafType === "object") {
-      return 0;
-    } else {
-      if (this.value_ < otherLeaf.value_) {
-        return-1;
-      } else {
-        if (this.value_ === otherLeaf.value_) {
-          return 0;
-        } else {
-          return 1;
-        }
-      }
-    }
-  } else {
-    return thisIndex - otherIndex;
-  }
-};
-fb.core.snap.LeafNode.prototype.withIndex = function() {
-  return this;
-};
-fb.core.snap.LeafNode.prototype.isIndexed = function() {
-  return true;
-};
-fb.core.snap.LeafNode.prototype.equals = function(other) {
-  if (other === this) {
-    return true;
-  } else {
-    if (other.isLeafNode()) {
-      var otherLeaf = (other);
-      return this.value_ === otherLeaf.value_ && this.priorityNode_.equals(otherLeaf.priorityNode_);
-    } else {
-      return false;
-    }
-  }
-};
-if (goog.DEBUG) {
-  fb.core.snap.LeafNode.prototype.toString = function() {
-    return fb.util.json.stringify(this.val(true));
-  };
-}
-;goog.provide("fb.core.snap.ChildrenNode");
-goog.require("fb.core.snap.IndexMap");
-goog.require("fb.core.snap.LeafNode");
-goog.require("fb.core.snap.NamedNode");
-goog.require("fb.core.snap.Node");
-goog.require("fb.core.snap.PriorityIndex");
-goog.require("fb.core.snap.comparators");
-goog.require("fb.core.util");
-goog.require("fb.core.util.SortedMap");
-fb.core.snap.ChildrenNode = function(children, priorityNode, indexMap) {
-  this.children_ = children;
-  this.priorityNode_ = priorityNode;
-  if (this.priorityNode_) {
-    fb.core.snap.validatePriorityNode(this.priorityNode_);
-  }
-  if (children.isEmpty()) {
-    fb.core.util.assert(!this.priorityNode_ || this.priorityNode_.isEmpty(), "An empty node cannot have a priority");
-  }
-  this.indexMap_ = indexMap;
-  this.lazyHash_ = null;
-};
-fb.core.snap.ChildrenNode.prototype.isLeafNode = function() {
-  return false;
-};
-fb.core.snap.ChildrenNode.prototype.getPriority = function() {
-  return this.priorityNode_ || fb.core.snap.EMPTY_NODE;
-};
-fb.core.snap.ChildrenNode.prototype.updatePriority = function(newPriorityNode) {
-  if (this.children_.isEmpty()) {
-    return this;
-  } else {
-    return new fb.core.snap.ChildrenNode(this.children_, newPriorityNode, this.indexMap_);
-  }
-};
-fb.core.snap.ChildrenNode.prototype.getImmediateChild = function(childName) {
-  if (childName === ".priority") {
-    return this.getPriority();
-  } else {
-    var child = this.children_.get(childName);
-    return child === null ? fb.core.snap.EMPTY_NODE : child;
-  }
-};
-fb.core.snap.ChildrenNode.prototype.getChild = function(path) {
-  var front = path.getFront();
-  if (front === null) {
-    return this;
-  }
-  return this.getImmediateChild(front).getChild(path.popFront());
-};
-fb.core.snap.ChildrenNode.prototype.hasChild = function(childName) {
-  return this.children_.get(childName) !== null;
-};
-fb.core.snap.ChildrenNode.prototype.updateImmediateChild = function(childName, newChildNode) {
-  fb.core.util.assert(newChildNode, "We should always be passing snapshot nodes");
-  if (childName === ".priority") {
-    return this.updatePriority(newChildNode);
-  } else {
-    var namedNode = new fb.core.snap.NamedNode(childName, newChildNode);
-    var newChildren, newIndexMap, newPriority;
-    if (newChildNode.isEmpty()) {
-      newChildren = this.children_.remove(childName);
-      newIndexMap = this.indexMap_.removeFromIndexes(namedNode, this.children_);
-    } else {
-      newChildren = this.children_.insert(childName, newChildNode);
-      newIndexMap = this.indexMap_.addToIndexes(namedNode, this.children_);
-    }
-    newPriority = newChildren.isEmpty() ? fb.core.snap.EMPTY_NODE : this.priorityNode_;
-    return new fb.core.snap.ChildrenNode(newChildren, newPriority, newIndexMap);
-  }
-};
-fb.core.snap.ChildrenNode.prototype.updateChild = function(path, newChildNode) {
-  var front = path.getFront();
-  if (front === null) {
-    return newChildNode;
-  } else {
-    fb.core.util.assert(path.getFront() !== ".priority" || path.getLength() === 1, ".priority must be the last token in a path");
-    var newImmediateChild = this.getImmediateChild(front).updateChild(path.popFront(), newChildNode);
-    return this.updateImmediateChild(front, newImmediateChild);
-  }
-};
-fb.core.snap.ChildrenNode.prototype.isEmpty = function() {
-  return this.children_.isEmpty();
-};
-fb.core.snap.ChildrenNode.prototype.numChildren = function() {
-  return this.children_.count();
-};
-fb.core.snap.ChildrenNode.INTEGER_REGEXP_ = /^(0|[1-9]\d*)$/;
-fb.core.snap.ChildrenNode.prototype.val = function(opt_exportFormat) {
-  if (this.isEmpty()) {
-    return null;
-  }
-  var obj = {};
-  var numKeys = 0, maxKey = 0, allIntegerKeys = true;
-  this.forEachChild(fb.core.snap.PriorityIndex, function(key, childNode) {
-    obj[key] = childNode.val(opt_exportFormat);
-    numKeys++;
-    if (allIntegerKeys && fb.core.snap.ChildrenNode.INTEGER_REGEXP_.test(key)) {
-      maxKey = Math.max(maxKey, Number(key));
-    } else {
-      allIntegerKeys = false;
-    }
-  });
-  if (!opt_exportFormat && allIntegerKeys && maxKey < 2 * numKeys) {
-    var array = [];
-    for (var key in obj) {
-      array[key] = obj[key];
-    }
-    return array;
-  } else {
-    if (opt_exportFormat && !this.getPriority().isEmpty()) {
-      obj[".priority"] = this.getPriority().val();
-    }
-    return obj;
-  }
-};
-fb.core.snap.ChildrenNode.prototype.hash = function() {
-  if (this.lazyHash_ === null) {
-    var toHash = "";
-    if (!this.getPriority().isEmpty()) {
-      toHash += "priority:" + fb.core.snap.priorityHashText((this.getPriority().val())) + ":";
-    }
-    this.forEachChild(fb.core.snap.PriorityIndex, function(key, childNode) {
-      var childHash = childNode.hash();
-      if (childHash !== "") {
-        toHash += ":" + key + ":" + childHash;
-      }
-    });
-    this.lazyHash_ = toHash === "" ? "" : fb.core.util.sha1(toHash);
-  }
-  return this.lazyHash_;
-};
-fb.core.snap.ChildrenNode.prototype.getPredecessorChildName = function(childName, childNode, index) {
-  var idx = this.resolveIndex_(index);
-  if (idx) {
-    var predecessor = idx.getPredecessorKey(new fb.core.snap.NamedNode(childName, childNode));
-    return predecessor ? predecessor.name : null;
-  } else {
-    return this.children_.getPredecessorKey(childName);
-  }
-};
-fb.core.snap.ChildrenNode.prototype.getFirstChildName = function(indexDefinition) {
-  var idx = this.resolveIndex_(indexDefinition);
-  if (idx) {
-    var minKey = idx.minKey();
-    return minKey && minKey.name;
-  } else {
-    return this.children_.minKey();
-  }
-};
-fb.core.snap.ChildrenNode.prototype.getFirstChild = function(indexDefinition) {
-  var minKey = this.getFirstChildName(indexDefinition);
-  if (minKey) {
-    return new fb.core.snap.NamedNode(minKey, this.children_.get(minKey));
-  } else {
-    return null;
-  }
-};
-fb.core.snap.ChildrenNode.prototype.getLastChildName = function(indexDefinition) {
-  var idx = this.resolveIndex_(indexDefinition);
-  if (idx) {
-    var maxKey = idx.maxKey();
-    return maxKey && maxKey.name;
-  } else {
-    return this.children_.maxKey();
-  }
-};
-fb.core.snap.ChildrenNode.prototype.getLastChild = function(indexDefinition) {
-  var maxKey = this.getLastChildName(indexDefinition);
-  if (maxKey) {
-    return new fb.core.snap.NamedNode(maxKey, this.children_.get(maxKey));
-  } else {
-    return null;
-  }
-};
-fb.core.snap.ChildrenNode.prototype.forEachChild = function(index, action) {
-  var idx = this.resolveIndex_(index);
-  if (idx) {
-    return idx.inorderTraversal(function(wrappedNode) {
-      return action(wrappedNode.name, wrappedNode.node);
-    });
-  } else {
-    return this.children_.inorderTraversal(action);
-  }
-};
-fb.core.snap.ChildrenNode.prototype.getIterator = function(indexDefinition) {
-  return this.getIteratorFrom(indexDefinition.minPost(), indexDefinition);
-};
-fb.core.snap.ChildrenNode.prototype.getIteratorFrom = function(startPost, indexDefinition) {
-  var idx = this.resolveIndex_(indexDefinition);
-  if (idx) {
-    return idx.getIteratorFrom(startPost, function(key) {
-      return key;
-    });
-  } else {
-    var iterator = this.children_.getIteratorFrom(startPost.name, fb.core.snap.NamedNode.Wrap);
-    var next = iterator.peek();
-    while (next != null && indexDefinition.compare(next, startPost) < 0) {
-      iterator.getNext();
-      next = iterator.peek();
-    }
-    return iterator;
-  }
-};
-fb.core.snap.ChildrenNode.prototype.getReverseIterator = function(indexDefinition) {
-  return this.getReverseIteratorFrom(indexDefinition.maxPost(), indexDefinition);
-};
-fb.core.snap.ChildrenNode.prototype.getReverseIteratorFrom = function(endPost, indexDefinition) {
-  var idx = this.resolveIndex_(indexDefinition);
-  if (idx) {
-    return idx.getReverseIteratorFrom(endPost, function(key) {
-      return key;
-    });
-  } else {
-    var iterator = this.children_.getReverseIteratorFrom(endPost.name, fb.core.snap.NamedNode.Wrap);
-    var next = iterator.peek();
-    while (next != null && indexDefinition.compare(next, endPost) > 0) {
-      iterator.getNext();
-      next = iterator.peek();
-    }
-    return iterator;
-  }
-};
-fb.core.snap.ChildrenNode.prototype.compareTo = function(other) {
-  if (this.isEmpty()) {
-    if (other.isEmpty()) {
-      return 0;
-    } else {
-      return-1;
-    }
-  } else {
-    if (other.isLeafNode() || other.isEmpty()) {
-      return 1;
-    } else {
-      if (other === fb.core.snap.MAX_NODE) {
-        return-1;
-      } else {
-        return 0;
-      }
-    }
-  }
-};
-fb.core.snap.ChildrenNode.prototype.withIndex = function(indexDefinition) {
-  if (indexDefinition === fb.core.snap.KeyIndex || this.indexMap_.hasIndex(indexDefinition)) {
-    return this;
-  } else {
-    var newIndexMap = this.indexMap_.addIndex(indexDefinition, this.children_);
-    return new fb.core.snap.ChildrenNode(this.children_, this.priorityNode_, newIndexMap);
-  }
-};
-fb.core.snap.ChildrenNode.prototype.isIndexed = function(index) {
-  return index === fb.core.snap.KeyIndex || this.indexMap_.hasIndex(index);
-};
-fb.core.snap.ChildrenNode.prototype.equals = function(other) {
-  if (other === this) {
-    return true;
-  } else {
-    if (other.isLeafNode()) {
-      return false;
-    } else {
-      var otherChildrenNode = (other);
-      if (!this.getPriority().equals(otherChildrenNode.getPriority())) {
-        return false;
-      } else {
-        if (this.children_.count() === otherChildrenNode.children_.count()) {
-          var thisIter = this.getIterator(fb.core.snap.PriorityIndex);
-          var otherIter = otherChildrenNode.getIterator(fb.core.snap.PriorityIndex);
-          var thisCurrent = thisIter.getNext();
-          var otherCurrent = otherIter.getNext();
-          while (thisCurrent && otherCurrent) {
-            if (thisCurrent.name !== otherCurrent.name || !thisCurrent.node.equals(otherCurrent.node)) {
-              return false;
-            }
-            thisCurrent = thisIter.getNext();
-            otherCurrent = otherIter.getNext();
-          }
-          return thisCurrent === null && otherCurrent === null;
-        } else {
-          return false;
-        }
-      }
-    }
-  }
-};
-fb.core.snap.ChildrenNode.prototype.resolveIndex_ = function(indexDefinition) {
-  if (indexDefinition === fb.core.snap.KeyIndex) {
-    return null;
-  } else {
-    return this.indexMap_.get(indexDefinition.toString());
-  }
-};
-if (goog.DEBUG) {
-  fb.core.snap.ChildrenNode.prototype.toString = function() {
-    return fb.util.json.stringify(this.val(true));
-  };
-}
-;goog.provide("fb.core.snap");
-goog.require("fb.core.snap.ChildrenNode");
-goog.require("fb.core.snap.IndexMap");
-goog.require("fb.core.snap.LeafNode");
-goog.require("fb.core.util");
-var USE_HINZE = true;
-fb.core.snap.NodeFromJSON = function(json, opt_priority) {
-  if (json === null) {
-    return fb.core.snap.EMPTY_NODE;
-  }
-  var priority = null;
-  if (typeof json === "object" && ".priority" in json) {
-    priority = json[".priority"];
-  } else {
-    if (typeof opt_priority !== "undefined") {
-      priority = opt_priority;
-    }
-  }
-  fb.core.util.assert(priority === null || typeof priority === "string" || typeof priority === "number" || typeof priority === "object" && ".sv" in priority, "Invalid priority type found: " + typeof priority);
-  if (typeof json === "object" && ".value" in json && json[".value"] !== null) {
-    json = json[".value"];
-  }
-  if (typeof json !== "object" || ".sv" in json) {
-    var jsonLeaf = (json);
-    return new fb.core.snap.LeafNode(jsonLeaf, fb.core.snap.NodeFromJSON(priority));
-  }
-  if (!(json instanceof Array) && USE_HINZE) {
-    var children = [];
-    var childrenHavePriority = false;
-    var hinzeJsonObj = (json);
-    fb.util.obj.foreach(hinzeJsonObj, function(key, child) {
-      if (typeof key !== "string" || key.substring(0, 1) !== ".") {
-        var childNode = fb.core.snap.NodeFromJSON(hinzeJsonObj[key]);
-        if (!childNode.isEmpty()) {
-          childrenHavePriority = childrenHavePriority || !childNode.getPriority().isEmpty();
-          children.push(new fb.core.snap.NamedNode(key, childNode));
-        }
-      }
-    });
-    if (children.length == 0) {
-      return fb.core.snap.EMPTY_NODE;
-    }
-    var childSet = (fb.core.snap.buildChildSet(children, fb.core.snap.NAME_ONLY_COMPARATOR, function(namedNode) {
-      return namedNode.name;
-    }, fb.core.snap.NAME_COMPARATOR));
-    if (childrenHavePriority) {
-      var sortedChildSet = fb.core.snap.buildChildSet(children, fb.core.snap.PriorityIndex.getCompare());
-      return new fb.core.snap.ChildrenNode(childSet, fb.core.snap.NodeFromJSON(priority), new fb.core.snap.IndexMap({".priority":sortedChildSet}, {".priority":fb.core.snap.PriorityIndex}));
-    } else {
-      return new fb.core.snap.ChildrenNode(childSet, fb.core.snap.NodeFromJSON(priority), fb.core.snap.IndexMap.Default);
-    }
-  } else {
-    var node = fb.core.snap.EMPTY_NODE;
-    var jsonObj = (json);
-    goog.object.forEach(jsonObj, function(childData, key) {
-      if (fb.util.obj.contains(jsonObj, key)) {
-        if (key.substring(0, 1) !== ".") {
-          var childNode = fb.core.snap.NodeFromJSON(childData);
-          if (childNode.isLeafNode() || !childNode.isEmpty()) {
-            node = node.updateImmediateChild(key, childNode);
-          }
-        }
-      }
-    });
-    return node.updatePriority(fb.core.snap.NodeFromJSON(priority));
-  }
-};
-var LOG_2 = Math.log(2);
-fb.core.snap.Base12Num = function(length) {
-  var logBase2 = function(num) {
-    return parseInt(Math.log(num) / LOG_2, 10);
-  };
-  var bitMask = function(bits) {
-    return parseInt(Array(bits + 1).join("1"), 2);
-  };
-  this.count = logBase2(length + 1);
-  this.current_ = this.count - 1;
-  var mask = bitMask(this.count);
-  this.bits_ = length + 1 & mask;
-};
-fb.core.snap.Base12Num.prototype.nextBitIsOne = function() {
-  var result = !(this.bits_ & 1 << this.current_);
-  this.current_--;
-  return result;
-};
-fb.core.snap.buildChildSet = function(childList, cmp, keyFn, mapSortFn) {
-  childList.sort(cmp);
-  var buildBalancedTree = function(low, high) {
-    var length = high - low;
-    if (length == 0) {
-      return null;
-    } else {
-      if (length == 1) {
-        var namedNode = childList[low];
-        var key = keyFn ? keyFn(namedNode) : namedNode;
-        return new fb.LLRBNode(key, namedNode.node, fb.LLRBNode.BLACK, null, null);
-      } else {
-        var middle = parseInt(length / 2, 10) + low;
-        var left = buildBalancedTree(low, middle);
-        var right = buildBalancedTree(middle + 1, high);
-        namedNode = childList[middle];
-        key = keyFn ? keyFn(namedNode) : namedNode;
-        return new fb.LLRBNode(key, namedNode.node, fb.LLRBNode.BLACK, left, right);
-      }
-    }
-  };
-  var buildFrom12Array = function(base12) {
-    var node = null;
-    var root = null;
-    var index = childList.length;
-    var buildPennant = function(chunkSize, color) {
-      var low = index - chunkSize;
-      var high = index;
-      index -= chunkSize;
-      var childTree = buildBalancedTree(low + 1, high);
-      var namedNode = childList[low];
-      var key = keyFn ? keyFn(namedNode) : namedNode;
-      attachPennant(new fb.LLRBNode(key, namedNode.node, color, null, childTree));
-    };
-    var attachPennant = function(pennant) {
-      if (node) {
-        node.left = pennant;
-        node = pennant;
-      } else {
-        root = pennant;
-        node = pennant;
-      }
-    };
-    for (var i = 0;i < base12.count;++i) {
-      var isOne = base12.nextBitIsOne();
-      var chunkSize = Math.pow(2, base12.count - (i + 1));
-      if (isOne) {
-        buildPennant(chunkSize, fb.LLRBNode.BLACK);
-      } else {
-        buildPennant(chunkSize, fb.LLRBNode.BLACK);
-        buildPennant(chunkSize, fb.LLRBNode.RED);
-      }
-    }
-    return root;
-  };
-  var base12 = new fb.core.snap.Base12Num(childList.length);
-  var root = buildFrom12Array(base12);
-  if (root !== null) {
-    return new fb.core.util.SortedMap(mapSortFn || cmp, root);
-  } else {
-    return new fb.core.util.SortedMap(mapSortFn || cmp);
-  }
-};
-fb.core.snap.priorityHashText = function(priority) {
-  if (typeof priority === "number") {
-    return "number:" + fb.core.util.doubleToIEEE754String(priority);
-  } else {
-    return "string:" + priority;
-  }
-};
-fb.core.snap.validatePriorityNode = function(priorityNode) {
-  if (priorityNode.isLeafNode()) {
-    var val = priorityNode.val();
-    fb.core.util.assert(typeof val === "string" || typeof val === "number" || typeof val === "object" && fb.util.obj.contains(val, ".sv"), "Priority must be a string or number.");
-  } else {
-    fb.core.util.assert(priorityNode === fb.core.snap.MAX_NODE || priorityNode.isEmpty(), "priority of unexpected type.");
-  }
-  fb.core.util.assert(priorityNode === fb.core.snap.MAX_NODE || priorityNode.getPriority().isEmpty(), "Priority nodes can't have a priority of their own.");
-};
-fb.core.snap.EMPTY_NODE = new fb.core.snap.ChildrenNode(new fb.core.util.SortedMap(fb.core.snap.NAME_COMPARATOR), null, fb.core.snap.IndexMap.Default);
-fb.core.snap.MAX_NODE_ = function() {
-  fb.core.snap.ChildrenNode.call(this, new fb.core.util.SortedMap(fb.core.snap.NAME_COMPARATOR), fb.core.snap.EMPTY_NODE, fb.core.snap.IndexMap.Default);
-};
-goog.inherits(fb.core.snap.MAX_NODE_, fb.core.snap.ChildrenNode);
-fb.core.snap.MAX_NODE_.prototype.compareTo = function(other) {
-  if (other === this) {
-    return 0;
-  } else {
-    return 1;
-  }
-};
-fb.core.snap.MAX_NODE_.prototype.equals = function(other) {
-  return other === this;
-};
-fb.core.snap.MAX_NODE_.prototype.getPriority = function() {
-  return this;
-};
-fb.core.snap.MAX_NODE_.prototype.getImmediateChild = function(childName) {
-  return fb.core.snap.EMPTY_NODE;
-};
-fb.core.snap.MAX_NODE_.prototype.isEmpty = function() {
-  return false;
-};
-fb.core.snap.MAX_NODE = new fb.core.snap.MAX_NODE_;
-fb.core.snap.NamedNode.MIN = new fb.core.snap.NamedNode(fb.core.util.MIN_NAME, fb.core.snap.EMPTY_NODE);
-fb.core.snap.NamedNode.MAX = new fb.core.snap.NamedNode(fb.core.util.MAX_NAME, fb.core.snap.MAX_NODE);
-goog.provide("fb.core.view.ViewCache");
-goog.require("fb.core.view.CacheNode");
-goog.require("fb.core.snap");
-fb.core.view.ViewCache = function(eventCache, serverCache) {
-  this.eventCache_ = eventCache;
-  this.serverCache_ = serverCache;
-};
-fb.core.view.ViewCache.Empty = new fb.core.view.ViewCache(new fb.core.view.CacheNode(fb.core.snap.EMPTY_NODE, false, false), new fb.core.view.CacheNode(fb.core.snap.EMPTY_NODE, false, false));
-fb.core.view.ViewCache.prototype.updateEventSnap = function(eventSnap, complete, filtered) {
-  return new fb.core.view.ViewCache(new fb.core.view.CacheNode(eventSnap, complete, filtered), this.serverCache_);
-};
-fb.core.view.ViewCache.prototype.updateServerSnap = function(serverSnap, complete, filtered) {
-  return new fb.core.view.ViewCache(this.eventCache_, new fb.core.view.CacheNode(serverSnap, complete, filtered));
-};
-fb.core.view.ViewCache.prototype.getEventCache = function() {
-  return this.eventCache_;
-};
-fb.core.view.ViewCache.prototype.getCompleteEventSnap = function() {
-  return this.eventCache_.isFullyInitialized() ? this.eventCache_.getNode() : null;
-};
-fb.core.view.ViewCache.prototype.getServerCache = function() {
-  return this.serverCache_;
-};
-fb.core.view.ViewCache.prototype.getCompleteServerSnap = function() {
-  return this.serverCache_.isFullyInitialized() ? this.serverCache_.getNode() : null;
-};
-goog.provide("fb.core.view.View");
-goog.require("fb.core.view.EventGenerator");
-goog.require("fb.core.view.ViewCache");
-goog.require("fb.core.view.ViewProcessor");
-goog.require("fb.core.util");
-fb.core.view.View = function(query, initialViewCache) {
-  this.query_ = query;
-  var params = query.getQueryParams();
-  var indexFilter = new fb.core.view.filter.IndexedFilter(params.getIndex());
-  var filter = params.getNodeFilter();
-  this.processor_ = new fb.core.view.ViewProcessor(filter);
-  var initialServerCache = initialViewCache.getServerCache();
-  var initialEventCache = initialViewCache.getEventCache();
-  var serverSnap = indexFilter.updateFullNode(fb.core.snap.EMPTY_NODE, initialServerCache.getNode(), null);
-  var eventSnap = filter.updateFullNode(fb.core.snap.EMPTY_NODE, initialEventCache.getNode(), null);
-  var newServerCache = new fb.core.view.CacheNode(serverSnap, initialServerCache.isFullyInitialized(), indexFilter.filtersNodes());
-  var newEventCache = new fb.core.view.CacheNode(eventSnap, initialEventCache.isFullyInitialized(), filter.filtersNodes());
-  this.viewCache_ = new fb.core.view.ViewCache(newEventCache, newServerCache);
-  this.eventRegistrations_ = [];
-  this.eventGenerator_ = new fb.core.view.EventGenerator(query);
-};
-fb.core.view.View.prototype.getQuery = function() {
-  return this.query_;
-};
-fb.core.view.View.prototype.getServerCache = function() {
-  return this.viewCache_.getServerCache().getNode();
-};
-fb.core.view.View.prototype.getCompleteServerCache = function(path) {
-  var cache = this.viewCache_.getCompleteServerSnap();
-  if (cache) {
-    if (this.query_.getQueryParams().loadsAllData() || !path.isEmpty() && !cache.getImmediateChild(path.getFront()).isEmpty()) {
-      return cache.getChild(path);
-    }
-  }
-  return null;
-};
-fb.core.view.View.prototype.isEmpty = function() {
-  return this.eventRegistrations_.length === 0;
-};
-fb.core.view.View.prototype.addEventRegistration = function(eventRegistration) {
-  this.eventRegistrations_.push(eventRegistration);
-};
-fb.core.view.View.prototype.removeEventRegistration = function(eventRegistration, cancelError) {
-  var cancelEvents = [];
-  if (cancelError) {
-    fb.core.util.assert(eventRegistration == null, "A cancel should cancel all event registrations.");
-    var path = this.query_.path;
-    goog.array.forEach(this.eventRegistrations_, function(registration) {
-      cancelError = (cancelError);
-      var maybeEvent = registration.createCancelEvent(cancelError, path);
-      if (maybeEvent) {
-        cancelEvents.push(maybeEvent);
-      }
-    });
-  }
-  if (eventRegistration) {
-    var remaining = [];
-    for (var i = 0;i < this.eventRegistrations_.length;++i) {
-      var existing = this.eventRegistrations_[i];
-      if (!existing.matches(eventRegistration)) {
-        remaining.push(existing);
-      } else {
-        if (eventRegistration.hasAnyCallback()) {
-          remaining = remaining.concat(this.eventRegistrations_.slice(i + 1));
-          break;
-        }
-      }
-    }
-    this.eventRegistrations_ = remaining;
-  } else {
-    this.eventRegistrations_ = [];
-  }
-  return cancelEvents;
-};
-fb.core.view.View.prototype.applyOperation = function(operation, writesCache, optCompleteServerCache) {
-  if (operation.type === fb.core.OperationType.MERGE && operation.source.queryId !== null) {
-    fb.core.util.assert(this.viewCache_.getCompleteServerSnap(), "We should always have a full cache before handling merges");
-    fb.core.util.assert(this.viewCache_.getCompleteEventSnap(), "Missing event cache, even though we have a server cache");
-  }
-  var oldViewCache = this.viewCache_;
-  var result = this.processor_.applyOperation(oldViewCache, operation, writesCache, optCompleteServerCache);
-  this.processor_.assertIndexed(result.viewCache);
-  fb.core.util.assert(result.viewCache.getServerCache().isFullyInitialized() || !oldViewCache.getServerCache().isFullyInitialized(), "Once a server snap is complete, it should never go back");
-  this.viewCache_ = result.viewCache;
-  return this.generateEventsForChanges_(result.changes, result.viewCache.getEventCache().getNode(), null);
-};
-fb.core.view.View.prototype.getInitialEvents = function(registration) {
-  var eventSnap = this.viewCache_.getEventCache();
-  var initialChanges = [];
-  if (!eventSnap.getNode().isLeafNode()) {
-    var eventNode = (eventSnap.getNode());
-    eventNode.forEachChild(fb.core.snap.PriorityIndex, function(key, childNode) {
-      initialChanges.push(fb.core.view.Change.childAddedChange(key, childNode));
-    });
-  }
-  if (eventSnap.isFullyInitialized()) {
-    initialChanges.push(fb.core.view.Change.valueChange(eventSnap.getNode()));
-  }
-  return this.generateEventsForChanges_(initialChanges, eventSnap.getNode(), registration);
-};
-fb.core.view.View.prototype.generateEventsForChanges_ = function(changes, eventCache, opt_eventRegistration) {
-  var registrations = opt_eventRegistration ? [opt_eventRegistration] : this.eventRegistrations_;
-  return this.eventGenerator_.generateEventsForChanges(changes, eventCache, registrations);
-};
-goog.provide("fb.core.operation.Merge");
-goog.require("fb.core.util");
-fb.core.operation.Merge = function(source, path, children) {
-  this.type = fb.core.OperationType.MERGE;
-  this.source = source;
-  this.path = path;
-  this.children = children;
-};
-fb.core.operation.Merge.prototype.operationForChild = function(childName) {
-  if (this.path.isEmpty()) {
-    var childTree = this.children.subtree(new fb.core.util.Path(childName));
-    if (childTree.isEmpty()) {
-      return null;
-    } else {
-      if (childTree.value) {
-        return new fb.core.operation.Overwrite(this.source, fb.core.util.Path.Empty, childTree.value);
-      } else {
-        return new fb.core.operation.Merge(this.source, fb.core.util.Path.Empty, childTree);
-      }
-    }
-  } else {
-    fb.core.util.assert(this.path.getFront() === childName, "Can't get a merge for a child not on the path of the operation");
-    return new fb.core.operation.Merge(this.source, this.path.popFront(), this.children);
-  }
-};
-if (goog.DEBUG) {
-  fb.core.operation.Merge.prototype.toString = function() {
-    return "Operation(" + this.path + ": " + this.source.toString() + " merge: " + this.children.toString() + ")";
-  };
-}
-;goog.provide("fb.core.Operation");
-goog.require("fb.core.operation.AckUserWrite");
-goog.require("fb.core.operation.Merge");
-goog.require("fb.core.operation.Overwrite");
-goog.require("fb.core.operation.ListenComplete");
-goog.require("fb.core.util");
-fb.core.OperationType = {OVERWRITE:0, MERGE:1, ACK_USER_WRITE:2, LISTEN_COMPLETE:3};
-fb.core.Operation = function() {
-};
-fb.core.Operation.prototype.source;
-fb.core.Operation.prototype.type;
-fb.core.Operation.prototype.path;
-fb.core.Operation.prototype.operationForChild = goog.abstractMethod;
-fb.core.OperationSource = function(fromUser, fromServer, queryId, tagged) {
-  this.fromUser = fromUser;
-  this.fromServer = fromServer;
-  this.queryId = queryId;
-  this.tagged = tagged;
-  fb.core.util.assert(!tagged || fromServer, "Tagged queries must be from server.");
-};
-fb.core.OperationSource.User = new fb.core.OperationSource(true, false, null, false);
-fb.core.OperationSource.Server = new fb.core.OperationSource(false, true, null, false);
-fb.core.OperationSource.forServerTaggedQuery = function(queryId) {
-  return new fb.core.OperationSource(false, true, queryId, true);
-};
-if (goog.DEBUG) {
-  fb.core.OperationSource.prototype.toString = function() {
-    return this.fromUser ? "user" : this.tagged ? "server(queryID=" + this.queryId + ")" : "server";
-  };
-}
-;goog.provide("fb.core.ReadonlyRestClient");
-goog.require("fb.core.util");
-goog.require("fb.util");
-goog.require("fb.util.json");
-goog.require("fb.util.jwt");
-goog.require("fb.util.obj");
-fb.core.ReadonlyRestClient = goog.defineClass(null, {constructor:function(repoInfo, onDataUpdate) {
-  this.log_ = fb.core.util.logWrapper("p:rest:");
-  this.repoInfo_ = repoInfo;
-  this.onDataUpdate_ = onDataUpdate;
-  this.credential_ = null;
-  this.listens_ = {};
-}, listen:function(query, currentHashFn, tag, onComplete) {
-  var pathString = query.path.toString();
-  this.log_("Listen called for " + pathString + " " + query.queryIdentifier());
-  var listenId = fb.core.ReadonlyRestClient.getListenId_(query, tag);
-  var thisListen = new Object;
-  this.listens_[listenId] = thisListen;
-  var queryStringParamaters = query.getQueryParams().toRestQueryStringParameters();
-  var self = this;
-  this.restRequest_(pathString + ".json", queryStringParamaters, function(error, result) {
-    var data = result;
-    if (error === 404) {
-      data = null;
-      error = null;
-    }
-    if (error === null) {
-      self.onDataUpdate_(pathString, data, false, tag);
-    }
-    if (fb.util.obj.get(self.listens_, listenId) === thisListen) {
-      var status;
-      if (!error) {
-        status = "ok";
-      } else {
-        if (error == 401) {
-          status = "permission_denied";
-        } else {
-          status = "rest_error:" + error;
-        }
-      }
-      onComplete(status, null);
-    }
-  });
-}, unlisten:function(query, tag) {
-  var listenId = fb.core.ReadonlyRestClient.getListenId_(query, tag);
-  delete this.listens_[listenId];
-}, auth:function(cred, opt_callback, opt_cancelCallback) {
-  this.credential_ = cred;
-  var res = fb.util.jwt.decode(cred);
-  var auth = res.data;
-  var expires = res.claims && res.claims["exp"];
-  if (opt_callback) {
-    opt_callback("ok", {"auth":auth, "expires":expires});
-  }
-}, unauth:function(onComplete) {
-  this.credential_ = null;
-  onComplete("ok", null);
-}, onDisconnectPut:function(pathString, data, opt_onComplete) {
-}, onDisconnectMerge:function(pathString, data, opt_onComplete) {
-}, onDisconnectCancel:function(pathString, opt_onComplete) {
-}, put:function(pathString, data, opt_onComplete, opt_hash) {
-}, merge:function(pathString, data, onComplete, opt_hash) {
-}, reportStats:function(stats) {
-}, restRequest_:function(pathString, queryStringParameters, callback) {
-  queryStringParameters = queryStringParameters || {};
-  queryStringParameters["format"] = "export";
-  if (this.credential_) {
-    queryStringParameters["auth"] = this.credential_;
-  }
-  var url = (this.repoInfo_.secure ? "https://" : "http://") + this.repoInfo_.host + pathString + "?" + fb.util.querystring(queryStringParameters);
-  this.log_("Sending REST request for " + url);
-  var xhr = new XMLHttpRequest;
-  var self = this;
-  xhr.onreadystatechange = function() {
-    if (callback && xhr.readyState === 4) {
-      self.log_("REST Response for " + url + " received. status:", xhr.status, "response:", xhr.responseText);
-      var res = null;
-      if (xhr.status >= 200 && xhr.status < 300) {
-        try {
-          res = fb.util.json.eval(xhr.responseText);
-        } catch (e) {
-          fb.core.util.warn("Failed to parse JSON response for " + url + ": " + xhr.responseText);
-        }
-        callback(null, res);
-      } else {
-        if (xhr.status !== 401 && xhr.status !== 404) {
-          fb.core.util.warn("Got unsuccessful REST response for " + url + " Status: " + xhr.status);
-        }
-        callback(xhr.status);
-      }
-      callback = null;
-    }
-  };
-  xhr.open("GET", url, true);
-  xhr.send();
-}, statics:{getListenId_:function(query, opt_tag) {
-  if (goog.isDef(opt_tag)) {
-    return "tag$" + opt_tag;
-  } else {
-    fb.core.util.assert(query.getQueryParams().isDefault(), "should have a tag if it's not a default query.");
-    return query.path.toString();
-  }
-}}});
-goog.provide("fb.core.util.ImmutableTree");
-goog.require("fb.core.util");
-goog.require("fb.core.util.Path");
-goog.require("fb.core.util.SortedMap");
-goog.require("fb.util.json");
-goog.require("fb.util.obj");
-goog.require("goog.object");
-fb.core.util.ImmutableTree = goog.defineClass(null, {constructor:function(value, opt_children) {
-  this.value = value;
-  this.children = opt_children || fb.core.util.ImmutableTree.EmptyChildren_;
-}, statics:{EmptyChildren_:new fb.core.util.SortedMap(fb.core.util.stringCompare), fromObject:function(obj) {
-  var tree = fb.core.util.ImmutableTree.Empty;
-  goog.object.forEach(obj, function(childSnap, childPath) {
-    tree = tree.set(new fb.core.util.Path(childPath), childSnap);
-  });
-  return tree;
-}}, isEmpty:function() {
-  return this.value === null && this.children.isEmpty();
-}, findRootMostMatchingPathAndValue:function(relativePath, predicate) {
-  if (this.value != null && predicate(this.value)) {
-    return{path:fb.core.util.Path.Empty, value:this.value};
-  } else {
-    if (relativePath.isEmpty()) {
-      return null;
-    } else {
-      var front = relativePath.getFront();
-      var child = this.children.get(front);
-      if (child !== null) {
-        var childExistingPathAndValue = child.findRootMostMatchingPathAndValue(relativePath.popFront(), predicate);
-        if (childExistingPathAndValue != null) {
-          var fullPath = (new fb.core.util.Path(front)).child(childExistingPathAndValue.path);
-          return{path:fullPath, value:childExistingPathAndValue.value};
-        } else {
-          return null;
-        }
-      } else {
-        return null;
-      }
-    }
-  }
-}, findRootMostValueAndPath:function(relativePath) {
-  return this.findRootMostMatchingPathAndValue(relativePath, function() {
-    return true;
-  });
-}, subtree:function(relativePath) {
-  if (relativePath.isEmpty()) {
-    return this;
-  } else {
-    var front = relativePath.getFront();
-    var childTree = this.children.get(front);
-    if (childTree !== null) {
-      return childTree.subtree(relativePath.popFront());
-    } else {
-      return fb.core.util.ImmutableTree.Empty;
-    }
-  }
-}, set:function(relativePath, toSet) {
-  if (relativePath.isEmpty()) {
-    return new fb.core.util.ImmutableTree(toSet, this.children);
-  } else {
-    var front = relativePath.getFront();
-    var child = this.children.get(front) || fb.core.util.ImmutableTree.Empty;
-    var newChild = child.set(relativePath.popFront(), toSet);
-    var newChildren = this.children.insert(front, newChild);
-    return new fb.core.util.ImmutableTree(this.value, newChildren);
-  }
-}, remove:function(relativePath) {
-  if (relativePath.isEmpty()) {
-    if (this.children.isEmpty()) {
-      return fb.core.util.ImmutableTree.Empty;
-    } else {
-      return new fb.core.util.ImmutableTree(null, this.children);
-    }
-  } else {
-    var front = relativePath.getFront();
-    var child = this.children.get(front);
-    if (child) {
-      var newChild = child.remove(relativePath.popFront());
-      var newChildren;
-      if (newChild.isEmpty()) {
-        newChildren = this.children.remove(front);
-      } else {
-        newChildren = this.children.insert(front, newChild);
-      }
-      if (this.value === null && newChildren.isEmpty()) {
-        return fb.core.util.ImmutableTree.Empty;
-      } else {
-        return new fb.core.util.ImmutableTree(this.value, newChildren);
-      }
-    } else {
-      return this;
-    }
-  }
-}, get:function(relativePath) {
-  if (relativePath.isEmpty()) {
-    return this.value;
-  } else {
-    var front = relativePath.getFront();
-    var child = this.children.get(front);
-    if (child) {
-      return child.get(relativePath.popFront());
-    } else {
-      return null;
-    }
-  }
-}, setTree:function(relativePath, newTree) {
-  if (relativePath.isEmpty()) {
-    return newTree;
-  } else {
-    var front = relativePath.getFront();
-    var child = this.children.get(front) || fb.core.util.ImmutableTree.Empty;
-    var newChild = child.setTree(relativePath.popFront(), newTree);
-    var newChildren;
-    if (newChild.isEmpty()) {
-      newChildren = this.children.remove(front);
-    } else {
-      newChildren = this.children.insert(front, newChild);
-    }
-    return new fb.core.util.ImmutableTree(this.value, newChildren);
-  }
-}, fold:function(fn) {
-  return this.fold_(fb.core.util.Path.Empty, fn);
-}, fold_:function(pathSoFar, fn) {
-  var accum = {};
-  this.children.inorderTraversal(function(childKey, childTree) {
-    accum[childKey] = childTree.fold_(pathSoFar.child(childKey), fn);
-  });
-  return fn(pathSoFar, this.value, accum);
-}, findOnPath:function(path, f) {
-  return this.findOnPath_(path, fb.core.util.Path.Empty, f);
-}, findOnPath_:function(pathToFollow, pathSoFar, f) {
-  var result = this.value ? f(pathSoFar, this.value) : false;
-  if (result) {
-    return result;
-  } else {
-    if (pathToFollow.isEmpty()) {
-      return null;
-    } else {
-      var front = pathToFollow.getFront();
-      var nextChild = this.children.get(front);
-      if (nextChild) {
-        return nextChild.findOnPath_(pathToFollow.popFront(), pathSoFar.child(front), f);
-      } else {
-        return null;
-      }
-    }
-  }
-}, foreachOnPathWhile:function(path, f) {
-  return this.foreachOnPathWhile_(path, fb.core.util.Path.Empty, f);
-}, foreachOnPathWhile_:function(pathToFollow, currentRelativePath, f) {
-  if (pathToFollow.isEmpty()) {
-    return currentRelativePath;
-  } else {
-    var shouldContinue = true;
-    if (this.value) {
-      shouldContinue = f(currentRelativePath, this.value);
-    }
-    if (shouldContinue === true) {
-      var front = pathToFollow.getFront();
-      var nextChild = this.children.get(front);
-      if (nextChild) {
-        return nextChild.foreachOnPath_(pathToFollow.popFront(), currentRelativePath.child(front), f);
-      } else {
-        return currentRelativePath;
-      }
-    } else {
-      return currentRelativePath;
-    }
-  }
-}, foreachOnPath:function(path, f) {
-  return this.foreachOnPath_(path, fb.core.util.Path.Empty, f);
-}, foreachOnPath_:function(pathToFollow, currentRelativePath, f) {
-  if (pathToFollow.isEmpty()) {
-    return this;
-  } else {
-    if (this.value) {
-      f(currentRelativePath, this.value);
-    }
-    var front = pathToFollow.getFront();
-    var nextChild = this.children.get(front);
-    if (nextChild) {
-      return nextChild.foreachOnPath_(pathToFollow.popFront(), currentRelativePath.child(front), f);
-    } else {
-      return fb.core.util.ImmutableTree.Empty;
-    }
-  }
-}, foreach:function(f) {
-  this.foreach_(fb.core.util.Path.Empty, f);
-}, foreach_:function(currentRelativePath, f) {
-  this.children.inorderTraversal(function(childName, childTree) {
-    childTree.foreach_(currentRelativePath.child(childName), f);
-  });
-  if (this.value) {
-    f(currentRelativePath, this.value);
-  }
-}, foreachChild:function(f) {
-  this.children.inorderTraversal(function(childName, childTree) {
-    if (childTree.value) {
-      f(childName, childTree.value);
-    }
-  });
-}});
-fb.core.util.ImmutableTree.Empty = new fb.core.util.ImmutableTree(null);
-if (goog.DEBUG) {
-  fb.core.util.ImmutableTree.prototype.toString = function() {
-    var json = {};
-    this.foreach(function(relativePath, value) {
-      var pathString = relativePath.toString();
-      json[pathString] = value.toString();
-    });
-    return fb.util.json.stringify(json);
-  };
-}
-;goog.provide("fb.core.CompoundWrite");
-goog.require("fb.core.snap.Node");
-goog.require("fb.core.util");
-goog.require("fb.core.util.ImmutableTree");
-fb.core.CompoundWrite = function(writeTree) {
-  this.writeTree_ = writeTree;
-};
-fb.core.CompoundWrite.Empty = new fb.core.CompoundWrite((new fb.core.util.ImmutableTree(null)));
-fb.core.CompoundWrite.prototype.addWrite = function(path, node) {
-  if (path.isEmpty()) {
-    return new fb.core.CompoundWrite(new fb.core.util.ImmutableTree(node));
-  } else {
-    var rootmost = this.writeTree_.findRootMostValueAndPath(path);
-    if (rootmost != null) {
-      var rootMostPath = rootmost.path, value = rootmost.value;
-      var relativePath = fb.core.util.Path.relativePath(rootMostPath, path);
-      value = value.updateChild(relativePath, node);
-      return new fb.core.CompoundWrite(this.writeTree_.set(rootMostPath, value));
-    } else {
-      var subtree = new fb.core.util.ImmutableTree(node);
-      var newWriteTree = this.writeTree_.setTree(path, subtree);
-      return new fb.core.CompoundWrite(newWriteTree);
-    }
-  }
-};
-fb.core.CompoundWrite.prototype.addWrites = function(path, updates) {
-  var newWrite = this;
-  fb.util.obj.foreach(updates, function(childKey, node) {
-    newWrite = newWrite.addWrite(path.child(childKey), node);
-  });
-  return newWrite;
-};
-fb.core.CompoundWrite.prototype.removeWrite = function(path) {
-  if (path.isEmpty()) {
-    return fb.core.CompoundWrite.Empty;
-  } else {
-    var newWriteTree = this.writeTree_.setTree(path, fb.core.util.ImmutableTree.Empty);
-    return new fb.core.CompoundWrite(newWriteTree);
-  }
-};
-fb.core.CompoundWrite.prototype.hasCompleteWrite = function(path) {
-  return this.getCompleteNode(path) != null;
-};
-fb.core.CompoundWrite.prototype.getCompleteNode = function(path) {
-  var rootmost = this.writeTree_.findRootMostValueAndPath(path);
-  if (rootmost != null) {
-    return this.writeTree_.get(rootmost.path).getChild(fb.core.util.Path.relativePath(rootmost.path, path));
-  } else {
-    return null;
-  }
-};
-fb.core.CompoundWrite.prototype.getCompleteChildren = function() {
-  var children = [];
-  var node = this.writeTree_.value;
-  if (node != null) {
-    if (!node.isLeafNode()) {
-      node = (node);
-      node.forEachChild(fb.core.snap.PriorityIndex, function(childName, childNode) {
-        children.push(new fb.core.snap.NamedNode(childName, childNode));
-      });
-    }
-  } else {
-    this.writeTree_.children.inorderTraversal(function(childName, childTree) {
-      if (childTree.value != null) {
-        children.push(new fb.core.snap.NamedNode(childName, childTree.value));
-      }
-    });
-  }
-  return children;
-};
-fb.core.CompoundWrite.prototype.childCompoundWrite = function(path) {
-  if (path.isEmpty()) {
-    return this;
-  } else {
-    var shadowingNode = this.getCompleteNode(path);
-    if (shadowingNode != null) {
-      return new fb.core.CompoundWrite(new fb.core.util.ImmutableTree(shadowingNode));
-    } else {
-      return new fb.core.CompoundWrite(this.writeTree_.subtree(path));
-    }
-  }
-};
-fb.core.CompoundWrite.prototype.isEmpty = function() {
-  return this.writeTree_.isEmpty();
-};
-fb.core.CompoundWrite.prototype.apply = function(node) {
-  return fb.core.CompoundWrite.applySubtreeWrite_(fb.core.util.Path.Empty, this.writeTree_, node);
-};
-fb.core.CompoundWrite.applySubtreeWrite_ = function(relativePath, writeTree, node) {
-  if (writeTree.value != null) {
-    return node.updateChild(relativePath, writeTree.value);
-  } else {
-    var priorityWrite = null;
-    writeTree.children.inorderTraversal(function(childKey, childTree) {
-      if (childKey === ".priority") {
-        fb.core.util.assert(childTree.value !== null, "Priority writes must always be leaf nodes");
-        priorityWrite = childTree.value;
-      } else {
-        node = fb.core.CompoundWrite.applySubtreeWrite_(relativePath.child(childKey), childTree, node);
-      }
-    });
-    if (!node.getChild(relativePath).isEmpty() && priorityWrite !== null) {
-      node = node.updateChild(relativePath.child(".priority"), (priorityWrite));
-    }
-    return node;
-  }
-};
-goog.provide("fb.core.WriteTree");
-goog.require("fb.core.CompoundWrite");
-goog.require("fb.core.util");
-goog.require("fb.core.view.CacheNode");
-fb.core.WriteRecord;
-fb.core.WriteTree = function() {
-  this.visibleWrites_ = (fb.core.CompoundWrite.Empty);
-  this.allWrites_ = [];
-  this.lastWriteId_ = -1;
-};
-fb.core.WriteTree.prototype.childWrites = function(path) {
-  return new fb.core.WriteTreeRef(path, this);
-};
-fb.core.WriteTree.prototype.addOverwrite = function(path, snap, writeId, visible) {
-  fb.core.util.assert(writeId > this.lastWriteId_, "Stacking an older write on top of newer ones");
-  if (!goog.isDef(visible)) {
-    visible = true;
-  }
-  this.allWrites_.push({path:path, snap:snap, writeId:writeId, visible:visible});
-  if (visible) {
-    this.visibleWrites_ = this.visibleWrites_.addWrite(path, snap);
-  }
-  this.lastWriteId_ = writeId;
-};
-fb.core.WriteTree.prototype.addMerge = function(path, changedChildren, writeId) {
-  fb.core.util.assert(writeId > this.lastWriteId_, "Stacking an older merge on top of newer ones");
-  this.allWrites_.push({path:path, children:changedChildren, writeId:writeId, visible:true});
-  this.visibleWrites_ = this.visibleWrites_.addWrites(path, changedChildren);
-  this.lastWriteId_ = writeId;
-};
-fb.core.WriteTree.prototype.removeWrite = function(writeId) {
-  var idx = goog.array.findIndex(this.allWrites_, function(s) {
-    return s.writeId === writeId;
-  });
-  fb.core.util.assert(idx >= 0, "removeWrite called with nonexistent writeId.");
-  var writeToRemove = this.allWrites_[idx];
-  this.allWrites_.splice(idx, 1);
-  var removedWriteWasVisible = writeToRemove.visible;
-  var removedWriteOverlapsWithOtherWrites = false;
-  var i = this.allWrites_.length - 1;
-  while (removedWriteWasVisible && i >= 0) {
-    var currentWrite = this.allWrites_[i];
-    if (currentWrite.visible) {
-      if (i >= idx && this.recordContainsPath_(currentWrite, writeToRemove.path)) {
-        removedWriteWasVisible = false;
-      } else {
-        if (writeToRemove.path.contains(currentWrite.path)) {
-          removedWriteOverlapsWithOtherWrites = true;
-        }
-      }
-    }
-    i--;
-  }
-  if (!removedWriteWasVisible) {
-    return null;
-  } else {
-    if (removedWriteOverlapsWithOtherWrites) {
-      this.resetTree_();
-      return writeToRemove.path;
-    } else {
-      if (writeToRemove.snap) {
-        this.visibleWrites_ = this.visibleWrites_.removeWrite(writeToRemove.path);
-      } else {
-        var children = writeToRemove.children;
-        var self = this;
-        goog.object.forEach(children, function(childSnap, childName) {
-          self.visibleWrites_ = self.visibleWrites_.removeWrite(writeToRemove.path.child(childName));
-        });
-      }
-      return writeToRemove.path;
-    }
-  }
-};
-fb.core.WriteTree.prototype.getCompleteWriteData = function(path) {
-  return this.visibleWrites_.getCompleteNode(path);
-};
-fb.core.WriteTree.prototype.calcCompleteEventCache = function(treePath, completeServerCache, writeIdsToExclude, includeHiddenWrites) {
-  if (!writeIdsToExclude && !includeHiddenWrites) {
-    var shadowingNode = this.visibleWrites_.getCompleteNode(treePath);
-    if (shadowingNode != null) {
-      return shadowingNode;
-    } else {
-      var subMerge = this.visibleWrites_.childCompoundWrite(treePath);
-      if (subMerge.isEmpty()) {
-        return completeServerCache;
-      } else {
-        if (completeServerCache == null && !subMerge.hasCompleteWrite(fb.core.util.Path.Empty)) {
-          return null;
-        } else {
-          var layeredCache = completeServerCache || fb.core.snap.EMPTY_NODE;
-          return subMerge.apply(layeredCache);
-        }
-      }
-    }
-  } else {
-    var merge = this.visibleWrites_.childCompoundWrite(treePath);
-    if (!includeHiddenWrites && merge.isEmpty()) {
-      return completeServerCache;
-    } else {
-      if (!includeHiddenWrites && completeServerCache == null && !merge.hasCompleteWrite(fb.core.util.Path.Empty)) {
-        return null;
-      } else {
-        var filter = function(write) {
-          return(write.visible || includeHiddenWrites) && (!writeIdsToExclude || !goog.array.contains(writeIdsToExclude, write.writeId)) && (write.path.contains(treePath) || treePath.contains(write.path));
-        };
-        var mergeAtPath = fb.core.WriteTree.layerTree_(this.allWrites_, filter, treePath);
-        layeredCache = completeServerCache || fb.core.snap.EMPTY_NODE;
-        return mergeAtPath.apply(layeredCache);
-      }
-    }
-  }
-};
-fb.core.WriteTree.prototype.calcCompleteEventChildren = function(treePath, completeServerChildren) {
-  var completeChildren = fb.core.snap.EMPTY_NODE;
-  var topLevelSet = this.visibleWrites_.getCompleteNode(treePath);
-  if (topLevelSet) {
-    if (!topLevelSet.isLeafNode()) {
-      topLevelSet.forEachChild(fb.core.snap.PriorityIndex, function(childName, childSnap) {
-        completeChildren = completeChildren.updateImmediateChild(childName, childSnap);
-      });
-    }
-    return completeChildren;
-  } else {
-    if (completeServerChildren) {
-      var merge = this.visibleWrites_.childCompoundWrite(treePath);
-      completeServerChildren.forEachChild(fb.core.snap.PriorityIndex, function(childName, childNode) {
-        var node = merge.childCompoundWrite(new fb.core.util.Path(childName)).apply(childNode);
-        completeChildren = completeChildren.updateImmediateChild(childName, node);
-      });
-      goog.array.forEach(merge.getCompleteChildren(), function(namedNode) {
-        completeChildren = completeChildren.updateImmediateChild(namedNode.name, namedNode.node);
-      });
-      return completeChildren;
-    } else {
-      merge = this.visibleWrites_.childCompoundWrite(treePath);
-      goog.array.forEach(merge.getCompleteChildren(), function(namedNode) {
-        completeChildren = completeChildren.updateImmediateChild(namedNode.name, namedNode.node);
-      });
-      return completeChildren;
-    }
-  }
-};
-fb.core.WriteTree.prototype.calcEventCacheAfterServerOverwrite = function(treePath, childPath, existingEventSnap, existingServerSnap) {
-  fb.core.util.assert(existingEventSnap || existingServerSnap, "Either existingEventSnap or existingServerSnap must exist");
-  var path = treePath.child(childPath);
-  if (this.visibleWrites_.hasCompleteWrite(path)) {
-    return null;
-  } else {
-    var childMerge = this.visibleWrites_.childCompoundWrite(path);
-    if (childMerge.isEmpty()) {
-      return existingServerSnap.getChild(childPath);
-    } else {
-      return childMerge.apply(existingServerSnap.getChild(childPath));
-    }
-  }
-};
-fb.core.WriteTree.prototype.calcCompleteChild = function(treePath, childKey, existingServerSnap) {
-  var path = treePath.child(childKey);
-  var shadowingNode = this.visibleWrites_.getCompleteNode(path);
-  if (shadowingNode != null) {
-    return shadowingNode;
-  } else {
-    if (existingServerSnap.isCompleteForChild(childKey)) {
-      var childMerge = this.visibleWrites_.childCompoundWrite(path);
-      return childMerge.apply(existingServerSnap.getNode().getImmediateChild(childKey));
-    } else {
-      return null;
-    }
-  }
-};
-fb.core.WriteTree.prototype.shadowingWrite = function(path) {
-  return this.visibleWrites_.getCompleteNode(path);
-};
-fb.core.WriteTree.prototype.calcIndexedSlice = function(treePath, completeServerData, startPost, count, reverse, index) {
-  var toIterate;
-  var merge = this.visibleWrites_.childCompoundWrite(treePath);
-  var shadowingNode = merge.getCompleteNode(fb.core.util.Path.Empty);
-  if (shadowingNode != null) {
-    toIterate = shadowingNode;
-  } else {
-    if (completeServerData != null) {
-      toIterate = merge.apply(completeServerData);
-    } else {
-      return[];
-    }
-  }
-  toIterate = toIterate.withIndex(index);
-  if (!toIterate.isEmpty() && !toIterate.isLeafNode()) {
-    var nodes = [];
-    var cmp = index.getCompare();
-    var iter = reverse ? toIterate.getReverseIteratorFrom(startPost, index) : toIterate.getIteratorFrom(startPost, index);
-    var next = iter.getNext();
-    while (next && nodes.length < count) {
-      if (cmp(next, startPost) !== 0) {
-        nodes.push(next);
-      }
-      next = iter.getNext();
-    }
-    return nodes;
-  } else {
-    return[];
-  }
-};
-fb.core.WriteTree.prototype.recordContainsPath_ = function(writeRecord, path) {
-  if (writeRecord.snap) {
-    return writeRecord.path.contains(path);
-  } else {
-    return!!goog.object.findKey(writeRecord.children, function(childSnap, childName) {
-      return writeRecord.path.child(childName).contains(path);
-    });
-  }
-};
-fb.core.WriteTree.prototype.resetTree_ = function() {
-  this.visibleWrites_ = fb.core.WriteTree.layerTree_(this.allWrites_, fb.core.WriteTree.DefaultFilter_, fb.core.util.Path.Empty);
-  if (this.allWrites_.length > 0) {
-    this.lastWriteId_ = this.allWrites_[this.allWrites_.length - 1].writeId;
-  } else {
-    this.lastWriteId_ = -1;
-  }
-};
-fb.core.WriteTree.DefaultFilter_ = function(write) {
-  return write.visible;
-};
-fb.core.WriteTree.layerTree_ = function(writes, filter, treeRoot) {
-  var compoundWrite = fb.core.CompoundWrite.Empty;
-  for (var i = 0;i < writes.length;++i) {
-    var write = writes[i];
-    if (filter(write)) {
-      var writePath = write.path;
-      var relativePath;
-      if (write.snap) {
-        if (treeRoot.contains(writePath)) {
-          relativePath = fb.core.util.Path.relativePath(treeRoot, writePath);
-          compoundWrite = compoundWrite.addWrite(relativePath, write.snap);
-        } else {
-          if (writePath.contains(treeRoot)) {
-            relativePath = fb.core.util.Path.relativePath(writePath, treeRoot);
-            compoundWrite = compoundWrite.addWrite(fb.core.util.Path.Empty, write.snap.getChild(relativePath));
-          } else {
-          }
-        }
-      } else {
-        if (write.children) {
-          if (treeRoot.contains(writePath)) {
-            relativePath = fb.core.util.Path.relativePath(treeRoot, writePath);
-            compoundWrite = compoundWrite.addWrites(relativePath, write.children);
-          } else {
-            if (writePath.contains(treeRoot)) {
-              relativePath = fb.core.util.Path.relativePath(writePath, treeRoot);
-              if (relativePath.isEmpty()) {
-                compoundWrite = compoundWrite.addWrites(fb.core.util.Path.Empty, write.children);
-              } else {
-                var child = fb.util.obj.get(write.children, relativePath.getFront());
-                if (child) {
-                  var deepNode = child.getChild(relativePath.popFront());
-                  compoundWrite = compoundWrite.addWrite(fb.core.util.Path.Empty, deepNode);
-                }
-              }
-            } else {
-            }
-          }
-        } else {
-          throw fb.core.util.assertionError("WriteRecord should have .snap or .children");
-        }
-      }
-    }
-  }
-  return compoundWrite;
-};
-fb.core.WriteTreeRef = function(path, writeTree) {
-  this.treePath_ = path;
-  this.writeTree_ = writeTree;
-};
-fb.core.WriteTreeRef.prototype.calcCompleteEventCache = function(completeServerCache, writeIdsToExclude, includeHiddenWrites) {
-  return this.writeTree_.calcCompleteEventCache(this.treePath_, completeServerCache, writeIdsToExclude, includeHiddenWrites);
-};
-fb.core.WriteTreeRef.prototype.calcCompleteEventChildren = function(completeServerChildren) {
-  return this.writeTree_.calcCompleteEventChildren(this.treePath_, completeServerChildren);
-};
-fb.core.WriteTreeRef.prototype.calcEventCacheAfterServerOverwrite = function(path, existingEventSnap, existingServerSnap) {
-  return this.writeTree_.calcEventCacheAfterServerOverwrite(this.treePath_, path, existingEventSnap, existingServerSnap);
-};
-fb.core.WriteTreeRef.prototype.shadowingWrite = function(path) {
-  return this.writeTree_.shadowingWrite(this.treePath_.child(path));
-};
-fb.core.WriteTreeRef.prototype.calcIndexedSlice = function(completeServerData, startPost, count, reverse, index) {
-  return this.writeTree_.calcIndexedSlice(this.treePath_, completeServerData, startPost, count, reverse, index);
-};
-fb.core.WriteTreeRef.prototype.calcCompleteChild = function(childKey, existingServerCache) {
-  return this.writeTree_.calcCompleteChild(this.treePath_, childKey, existingServerCache);
-};
-fb.core.WriteTreeRef.prototype.child = function(childName) {
-  return new fb.core.WriteTreeRef(this.treePath_.child(childName), this.writeTree_);
-};
-goog.provide("fb.core.SyncPoint");
-goog.require("fb.core.util");
-goog.require("fb.core.util.ImmutableTree");
-goog.require("fb.core.view.ViewCache");
-goog.require("fb.core.view.EventRegistration");
-goog.require("fb.core.view.View");
-goog.require("goog.array");
-fb.core.SyncPoint = function() {
-  this.views_ = {};
-};
-fb.core.SyncPoint.prototype.isEmpty = function() {
-  return goog.object.isEmpty(this.views_);
-};
-fb.core.SyncPoint.prototype.applyOperation = function(operation, writesCache, optCompleteServerCache) {
-  var queryId = operation.source.queryId;
-  if (queryId !== null) {
-    var view = fb.util.obj.get(this.views_, queryId);
-    fb.core.util.assert(view != null, "SyncTree gave us an op for an invalid query.");
-    return view.applyOperation(operation, writesCache, optCompleteServerCache);
-  } else {
-    var events = [];
-    goog.object.forEach(this.views_, function(view) {
-      events = events.concat(view.applyOperation(operation, writesCache, optCompleteServerCache));
-    });
-    return events;
-  }
-};
-fb.core.SyncPoint.prototype.addEventRegistration = function(query, eventRegistration, writesCache, serverCache, serverCacheComplete) {
-  var queryId = query.queryIdentifier();
-  var view = fb.util.obj.get(this.views_, queryId);
-  if (!view) {
-    var eventCache = writesCache.calcCompleteEventCache(serverCacheComplete ? serverCache : null);
-    var eventCacheComplete = false;
-    if (eventCache) {
-      eventCacheComplete = true;
-    } else {
-      if (serverCache instanceof fb.core.snap.ChildrenNode) {
-        eventCache = writesCache.calcCompleteEventChildren(serverCache);
-        eventCacheComplete = false;
-      } else {
-        eventCache = fb.core.snap.EMPTY_NODE;
-        eventCacheComplete = false;
-      }
-    }
-    var viewCache = new fb.core.view.ViewCache(new fb.core.view.CacheNode((eventCache), eventCacheComplete, false), new fb.core.view.CacheNode((serverCache), serverCacheComplete, false));
-    view = new fb.core.view.View(query, viewCache);
-    this.views_[queryId] = view;
-  }
-  view.addEventRegistration(eventRegistration);
-  return view.getInitialEvents(eventRegistration);
-};
-fb.core.SyncPoint.prototype.removeEventRegistration = function(query, eventRegistration, cancelError) {
-  var queryId = query.queryIdentifier();
-  var removed = [];
-  var cancelEvents = [];
-  var hadCompleteView = this.hasCompleteView();
-  if (queryId === "default") {
-    var self = this;
-    goog.object.forEach(this.views_, function(view, viewQueryId) {
-      cancelEvents = cancelEvents.concat(view.removeEventRegistration(eventRegistration, cancelError));
-      if (view.isEmpty()) {
-        delete self.views_[viewQueryId];
-        if (!view.getQuery().getQueryParams().loadsAllData()) {
-          removed.push(view.getQuery());
-        }
-      }
-    });
-  } else {
-    var view = fb.util.obj.get(this.views_, queryId);
-    if (view) {
-      cancelEvents = cancelEvents.concat(view.removeEventRegistration(eventRegistration, cancelError));
-      if (view.isEmpty()) {
-        delete this.views_[queryId];
-        if (!view.getQuery().getQueryParams().loadsAllData()) {
-          removed.push(view.getQuery());
-        }
-      }
-    }
-  }
-  if (hadCompleteView && !this.hasCompleteView()) {
-    removed.push(new Firebase(query.repo, query.path));
-  }
-  return{removed:removed, events:cancelEvents};
-};
-fb.core.SyncPoint.prototype.getQueryViews = function() {
-  return goog.array.filter(goog.object.getValues(this.views_), function(view) {
-    return!view.getQuery().getQueryParams().loadsAllData();
-  });
-};
-fb.core.SyncPoint.prototype.getCompleteServerCache = function(path) {
-  var serverCache = null;
-  goog.object.forEach(this.views_, function(view) {
-    serverCache = serverCache || view.getCompleteServerCache(path);
-  });
-  return serverCache;
-};
-fb.core.SyncPoint.prototype.viewForQuery = function(query) {
-  var params = query.getQueryParams();
-  if (params.loadsAllData()) {
-    return this.getCompleteView();
-  } else {
-    var queryId = query.queryIdentifier();
-    return fb.util.obj.get(this.views_, queryId);
-  }
-};
-fb.core.SyncPoint.prototype.viewExistsForQuery = function(query) {
-  return this.viewForQuery(query) != null;
-};
-fb.core.SyncPoint.prototype.hasCompleteView = function() {
-  return this.getCompleteView() != null;
-};
-fb.core.SyncPoint.prototype.getCompleteView = function() {
-  var completeView = goog.object.findValue(this.views_, function(view) {
-    return view.getQuery().getQueryParams().loadsAllData();
-  });
-  return completeView || null;
-};
-goog.provide("fb.core.SyncTree");
-goog.require("fb.core.Operation");
-goog.require("fb.core.SyncPoint");
-goog.require("fb.core.WriteTree");
-goog.require("fb.core.util");
-fb.core.ListenProvider;
-fb.core.SyncTree = function(listenProvider) {
-  this.syncPointTree_ = fb.core.util.ImmutableTree.Empty;
-  this.pendingWriteTree_ = new fb.core.WriteTree;
-  this.tagToQueryMap_ = {};
-  this.queryToTagMap_ = {};
-  this.listenProvider_ = listenProvider;
-};
-fb.core.SyncTree.prototype.applyUserOverwrite = function(path, newData, writeId, visible) {
-  this.pendingWriteTree_.addOverwrite(path, newData, writeId, visible);
-  if (!visible) {
-    return[];
-  } else {
-    return this.applyOperationToSyncPoints_(new fb.core.operation.Overwrite(fb.core.OperationSource.User, path, newData));
-  }
-};
-fb.core.SyncTree.prototype.applyUserMerge = function(path, changedChildren, writeId) {
-  this.pendingWriteTree_.addMerge(path, changedChildren, writeId);
-  var changeTree = fb.core.util.ImmutableTree.fromObject(changedChildren);
-  return this.applyOperationToSyncPoints_(new fb.core.operation.Merge(fb.core.OperationSource.User, path, changeTree));
-};
-fb.core.SyncTree.prototype.ackUserWrite = function(writeId, revert) {
-  revert = revert || false;
-  var pathToReevaluate = this.pendingWriteTree_.removeWrite(writeId);
-  if (pathToReevaluate == null) {
-    return[];
-  } else {
-    return this.applyOperationToSyncPoints_(new fb.core.operation.AckUserWrite(pathToReevaluate, revert));
-  }
-};
-fb.core.SyncTree.prototype.applyServerOverwrite = function(path, newData) {
-  return this.applyOperationToSyncPoints_(new fb.core.operation.Overwrite(fb.core.OperationSource.Server, path, newData));
-};
-fb.core.SyncTree.prototype.applyServerMerge = function(path, changedChildren) {
-  var changeTree = fb.core.util.ImmutableTree.fromObject(changedChildren);
-  return this.applyOperationToSyncPoints_(new fb.core.operation.Merge(fb.core.OperationSource.Server, path, changeTree));
-};
-fb.core.SyncTree.prototype.applyListenComplete = function(path) {
-  return this.applyOperationToSyncPoints_(new fb.core.operation.ListenComplete(fb.core.OperationSource.Server, path));
-};
-fb.core.SyncTree.prototype.applyTaggedQueryOverwrite = function(path, snap, tag) {
-  var queryKey = this.queryKeyForTag_(tag);
-  if (queryKey != null) {
-    var r = this.parseQueryKey_(queryKey);
-    var queryPath = r.path, queryId = r.queryId;
-    var relativePath = fb.core.util.Path.relativePath(queryPath, path);
-    var op = new fb.core.operation.Overwrite(fb.core.OperationSource.forServerTaggedQuery(queryId), relativePath, snap);
-    return this.applyTaggedOperation_(queryPath, queryId, op);
-  } else {
-    return[];
-  }
-};
-fb.core.SyncTree.prototype.applyTaggedQueryMerge = function(path, changedChildren, tag) {
-  var queryKey = this.queryKeyForTag_(tag);
-  if (queryKey) {
-    var r = this.parseQueryKey_(queryKey);
-    var queryPath = r.path, queryId = r.queryId;
-    var relativePath = fb.core.util.Path.relativePath(queryPath, path);
-    var changeTree = fb.core.util.ImmutableTree.fromObject(changedChildren);
-    var op = new fb.core.operation.Merge(fb.core.OperationSource.forServerTaggedQuery(queryId), relativePath, changeTree);
-    return this.applyTaggedOperation_(queryPath, queryId, op);
-  } else {
-    return[];
-  }
-};
-fb.core.SyncTree.prototype.applyTaggedListenComplete = function(path, tag) {
-  var queryKey = this.queryKeyForTag_(tag);
-  if (queryKey) {
-    var r = this.parseQueryKey_(queryKey);
-    var queryPath = r.path, queryId = r.queryId;
-    var relativePath = fb.core.util.Path.relativePath(queryPath, path);
-    var op = new fb.core.operation.ListenComplete(fb.core.OperationSource.forServerTaggedQuery(queryId), relativePath);
-    return this.applyTaggedOperation_(queryPath, queryId, op);
-  } else {
-    return[];
-  }
-};
-fb.core.SyncTree.prototype.addEventRegistration = function(query, eventRegistration) {
-  var path = query.path;
-  var serverCache = null;
-  var foundAncestorDefaultView = false;
-  this.syncPointTree_.foreachOnPathWhile(path, function(pathToSyncPoint, sp) {
-    var relativePath = fb.core.util.Path.relativePath(pathToSyncPoint, path);
-    serverCache = sp.getCompleteServerCache(relativePath);
-    foundAncestorDefaultView = foundAncestorDefaultView || sp.hasCompleteView();
-    return!serverCache;
-  });
-  var syncPoint = this.syncPointTree_.get(path);
-  if (!syncPoint) {
-    syncPoint = new fb.core.SyncPoint;
-    this.syncPointTree_ = this.syncPointTree_.set(path, syncPoint);
-  } else {
-    foundAncestorDefaultView = foundAncestorDefaultView || syncPoint.hasCompleteView();
-    serverCache = serverCache || syncPoint.getCompleteServerCache(fb.core.util.Path.Empty);
-  }
-  var serverCacheComplete;
-  if (serverCache != null) {
-    serverCacheComplete = true;
-  } else {
-    serverCacheComplete = false;
-    serverCache = fb.core.snap.EMPTY_NODE;
-    var subtree = this.syncPointTree_.subtree(path);
-    subtree.foreachChild(function(childName, childSyncPoint) {
-      var completeCache = childSyncPoint.getCompleteServerCache(fb.core.util.Path.Empty);
-      if (completeCache) {
-        serverCache = serverCache.updateImmediateChild(childName, completeCache);
-      }
-    });
-  }
-  var viewAlreadyExists = syncPoint.viewExistsForQuery(query);
-  if (!viewAlreadyExists && !query.getQueryParams().loadsAllData()) {
-    var queryKey = this.makeQueryKey_(query);
-    fb.core.util.assert(!goog.object.containsKey(this.queryToTagMap_, queryKey), "View does not exist, but we have a tag");
-    var tag = fb.core.SyncTree.getNextQueryTag_();
-    this.queryToTagMap_[queryKey] = tag;
-    this.tagToQueryMap_["_" + tag] = queryKey;
-  }
-  var writesCache = this.pendingWriteTree_.childWrites(path);
-  var events = syncPoint.addEventRegistration(query, eventRegistration, writesCache, serverCache, serverCacheComplete);
-  if (!viewAlreadyExists && !foundAncestorDefaultView) {
-    var view = (syncPoint.viewForQuery(query));
-    events = events.concat(this.setupListener_(query, view));
-  }
-  return events;
-};
-fb.core.SyncTree.prototype.removeEventRegistration = function(query, eventRegistration, cancelError) {
-  var path = query.path;
-  var maybeSyncPoint = this.syncPointTree_.get(path);
-  var cancelEvents = [];
-  if (maybeSyncPoint && (query.queryIdentifier() === "default" || maybeSyncPoint.viewExistsForQuery(query))) {
-    var removedAndEvents = maybeSyncPoint.removeEventRegistration(query, eventRegistration, cancelError);
-    if (maybeSyncPoint.isEmpty()) {
-      this.syncPointTree_ = this.syncPointTree_.remove(path);
-    }
-    var removed = removedAndEvents.removed;
-    cancelEvents = removedAndEvents.events;
-    var removingDefault = -1 !== goog.array.findIndex(removed, function(query) {
-      return query.getQueryParams().loadsAllData();
-    });
-    var covered = this.syncPointTree_.findOnPath(path, function(relativePath, parentSyncPoint) {
-      return parentSyncPoint.hasCompleteView();
-    });
-    if (removingDefault && !covered) {
-      var subtree = this.syncPointTree_.subtree(path);
-      if (!subtree.isEmpty()) {
-        var newViews = this.collectDistinctViewsForSubTree_(subtree);
-        for (var i = 0;i < newViews.length;++i) {
-          var view = newViews[i], newQuery = view.getQuery();
-          var listener = this.createListenerForView_(view);
-          this.listenProvider_.startListening(newQuery, this.tagForQuery_(newQuery), listener.hashFn, listener.onComplete);
-        }
-      } else {
-      }
-    }
-    if (!covered && removed.length > 0 && !cancelError) {
-      if (removingDefault) {
-        var defaultTag = null;
-        this.listenProvider_.stopListening(query, defaultTag);
-      } else {
-        var self = this;
-        goog.array.forEach(removed, function(queryToRemove) {
-          var queryIdToRemove = queryToRemove.queryIdentifier();
-          var tagToRemove = self.queryToTagMap_[self.makeQueryKey_(queryToRemove)];
-          self.listenProvider_.stopListening(queryToRemove, tagToRemove);
-        });
-      }
-    }
-    this.removeTags_(removed);
-  } else {
-  }
-  return cancelEvents;
-};
-fb.core.SyncTree.prototype.calcCompleteEventCache = function(path, writeIdsToExclude) {
-  var includeHiddenSets = true;
-  var writeTree = this.pendingWriteTree_;
-  var serverCache = this.syncPointTree_.findOnPath(path, function(pathSoFar, syncPoint) {
-    var relativePath = fb.core.util.Path.relativePath(pathSoFar, path);
-    var serverCache = syncPoint.getCompleteServerCache(relativePath);
-    if (serverCache) {
-      return serverCache;
-    }
-  });
-  return writeTree.calcCompleteEventCache(path, serverCache, writeIdsToExclude, includeHiddenSets);
-};
-fb.core.SyncTree.prototype.collectDistinctViewsForSubTree_ = function(subtree) {
-  return subtree.fold(function(relativePath, maybeChildSyncPoint, childMap) {
-    if (maybeChildSyncPoint && maybeChildSyncPoint.hasCompleteView()) {
-      var completeView = maybeChildSyncPoint.getCompleteView();
-      return[completeView];
-    } else {
-      var views = [];
-      if (maybeChildSyncPoint) {
-        views = maybeChildSyncPoint.getQueryViews();
-      }
-      goog.object.forEach(childMap, function(childViews) {
-        views = views.concat(childViews);
-      });
-      return views;
-    }
-  });
-};
-fb.core.SyncTree.prototype.removeTags_ = function(queries) {
-  for (var j = 0;j < queries.length;++j) {
-    var removedQuery = queries[j];
-    if (!removedQuery.getQueryParams().loadsAllData()) {
-      var removedQueryKey = this.makeQueryKey_(removedQuery);
-      var removedQueryTag = this.queryToTagMap_[removedQueryKey];
-      delete this.queryToTagMap_[removedQueryKey];
-      delete this.tagToQueryMap_["_" + removedQueryTag];
-    }
-  }
-};
-fb.core.SyncTree.prototype.setupListener_ = function(query, view) {
-  var path = query.path;
-  var tag = this.tagForQuery_(query);
-  var listener = this.createListenerForView_(view);
-  var events = this.listenProvider_.startListening(query, tag, listener.hashFn, listener.onComplete);
-  var subtree = this.syncPointTree_.subtree(path);
-  if (tag) {
-    fb.core.util.assert(!subtree.value.hasCompleteView(), "If we're adding a query, it shouldn't be shadowed");
-  } else {
-    var queriesToStop = subtree.fold(function(relativePath, maybeChildSyncPoint, childMap) {
-      if (!relativePath.isEmpty() && maybeChildSyncPoint && maybeChildSyncPoint.hasCompleteView()) {
-        return[maybeChildSyncPoint.getCompleteView().getQuery()];
-      } else {
-        var queries = [];
-        if (maybeChildSyncPoint) {
-          queries = queries.concat(goog.array.map(maybeChildSyncPoint.getQueryViews(), function(view) {
-            return view.getQuery();
-          }));
-        }
-        goog.object.forEach(childMap, function(childQueries) {
-          queries = queries.concat(childQueries);
-        });
-        return queries;
-      }
-    });
-    for (var i = 0;i < queriesToStop.length;++i) {
-      var queryToStop = queriesToStop[i];
-      this.listenProvider_.stopListening(queryToStop, this.tagForQuery_(queryToStop));
-    }
-  }
-  return events;
-};
-fb.core.SyncTree.prototype.createListenerForView_ = function(view) {
-  var self = this;
-  var query = view.getQuery();
-  var tag = this.tagForQuery_(query);
-  return{hashFn:function() {
-    var cache = view.getServerCache() || fb.core.snap.EMPTY_NODE;
-    return cache.hash();
-  }, onComplete:function(status, data) {
-    if (status === "ok") {
-      if (tag) {
-        return self.applyTaggedListenComplete(query.path, tag);
-      } else {
-        return self.applyListenComplete(query.path);
-      }
-    } else {
-      var error = fb.core.util.errorForServerCode(status);
-      return self.removeEventRegistration(query, null, error);
-    }
-  }};
-};
-fb.core.SyncTree.prototype.makeQueryKey_ = function(query) {
-  return query.path.toString() + "$" + query.queryIdentifier();
-};
-fb.core.SyncTree.prototype.parseQueryKey_ = function(queryKey) {
-  var splitIndex = queryKey.indexOf("$");
-  fb.core.util.assert(splitIndex !== -1 && splitIndex < queryKey.length - 1, "Bad queryKey.");
-  return{queryId:queryKey.substr(splitIndex + 1), path:new fb.core.util.Path(queryKey.substr(0, splitIndex))};
-};
-fb.core.SyncTree.prototype.queryKeyForTag_ = function(tag) {
-  return goog.object.get(this.tagToQueryMap_, "_" + tag);
-};
-fb.core.SyncTree.prototype.tagForQuery_ = function(query) {
-  var queryKey = this.makeQueryKey_(query);
-  return fb.util.obj.get(this.queryToTagMap_, queryKey);
-};
-fb.core.SyncTree.nextQueryTag_ = 1;
-fb.core.SyncTree.getNextQueryTag_ = function() {
-  return fb.core.SyncTree.nextQueryTag_++;
-};
-fb.core.SyncTree.prototype.applyTaggedOperation_ = function(queryPath, queryId, operation) {
-  var syncPoint = this.syncPointTree_.get(queryPath);
-  fb.core.util.assert(syncPoint, "Missing sync point for query tag that we're tracking");
-  var writesCache = this.pendingWriteTree_.childWrites(queryPath);
-  return syncPoint.applyOperation(operation, writesCache, null);
-};
-fb.core.SyncTree.prototype.applyOperationToSyncPoints_ = function(operation) {
-  return this.applyOperationHelper_(operation, this.syncPointTree_, null, this.pendingWriteTree_.childWrites(fb.core.util.Path.Empty));
-};
-fb.core.SyncTree.prototype.applyOperationHelper_ = function(operation, syncPointTree, serverCache, writesCache) {
-  if (operation.path.isEmpty()) {
-    return this.applyOperationDescendantsHelper_(operation, syncPointTree, serverCache, writesCache);
-  } else {
-    var syncPoint = syncPointTree.get(fb.core.util.Path.Empty);
-    if (serverCache == null && syncPoint != null) {
-      serverCache = syncPoint.getCompleteServerCache(fb.core.util.Path.Empty);
-    }
-    var events = [];
-    var childName = operation.path.getFront();
-    var childOperation = operation.operationForChild(childName);
-    var childTree = syncPointTree.children.get(childName);
-    if (childTree && childOperation) {
-      var childServerCache = serverCache ? serverCache.getImmediateChild(childName) : null;
-      var childWritesCache = writesCache.child(childName);
-      events = events.concat(this.applyOperationHelper_(childOperation, childTree, childServerCache, childWritesCache));
-    }
-    if (syncPoint) {
-      events = events.concat(syncPoint.applyOperation(operation, writesCache, serverCache));
-    }
-    return events;
-  }
-};
-fb.core.SyncTree.prototype.applyOperationDescendantsHelper_ = function(operation, syncPointTree, serverCache, writesCache) {
-  var syncPoint = syncPointTree.get(fb.core.util.Path.Empty);
-  if (serverCache == null && syncPoint != null) {
-    serverCache = syncPoint.getCompleteServerCache(fb.core.util.Path.Empty);
-  }
-  var events = [];
-  var self = this;
-  syncPointTree.children.inorderTraversal(function(childName, childTree) {
-    var childServerCache = serverCache ? serverCache.getImmediateChild(childName) : null;
-    var childWritesCache = writesCache.child(childName);
-    var childOperation = operation.operationForChild(childName);
-    if (childOperation) {
-      events = events.concat(self.applyOperationDescendantsHelper_(childOperation, childTree, childServerCache, childWritesCache));
-    }
-  });
-  if (syncPoint) {
-    events = events.concat(syncPoint.applyOperation(operation, writesCache, serverCache));
-  }
-  return events;
-};
-goog.provide("fb.core.util.Tree");
-goog.require("fb.core.util");
-goog.require("fb.core.util.Path");
-goog.require("fb.util.obj");
-goog.require("goog.object");
-fb.core.util.TreeNode = goog.defineClass(null, {constructor:function() {
-  this.children = {};
-  this.childCount = 0;
-  this.value = null;
-}});
-fb.core.util.Tree = goog.defineClass(null, {constructor:function(opt_name, opt_parent, opt_node) {
-  this.name_ = opt_name ? opt_name : "";
-  this.parent_ = opt_parent ? opt_parent : null;
-  this.node_ = opt_node ? opt_node : new fb.core.util.TreeNode;
-}, subTree:function(pathObj) {
-  var path = pathObj instanceof fb.core.util.Path ? pathObj : new fb.core.util.Path(pathObj);
-  var child = this, next;
-  while ((next = path.getFront()) !== null) {
-    var childNode = fb.util.obj.get(child.node_.children, next) || new fb.core.util.TreeNode;
-    child = new fb.core.util.Tree(next, child, childNode);
-    path = path.popFront();
-  }
-  return child;
-}, getValue:function() {
-  return this.node_.value;
-}, setValue:function(value) {
-  fb.core.util.assert(typeof value !== "undefined", "Cannot set value to undefined");
-  this.node_.value = value;
-  this.updateParents_();
-}, clear:function() {
-  this.node_.value = null;
-  this.node_.children = {};
-  this.node_.childCount = 0;
-  this.updateParents_();
-}, hasChildren:function() {
-  return this.node_.childCount > 0;
-}, isEmpty:function() {
-  return this.getValue() === null && !this.hasChildren();
-}, forEachChild:function(action) {
-  var self = this;
-  goog.object.forEach(this.node_.children, function(childTree, child) {
-    action(new fb.core.util.Tree(child, self, childTree));
-  });
-}, forEachDescendant:function(action, opt_includeSelf, opt_childrenFirst) {
-  if (opt_includeSelf && !opt_childrenFirst) {
-    action(this);
-  }
-  this.forEachChild(function(child) {
-    child.forEachDescendant(action, true, opt_childrenFirst);
-  });
-  if (opt_includeSelf && opt_childrenFirst) {
-    action(this);
-  }
-}, forEachAncestor:function(action, opt_includeSelf) {
-  var node = opt_includeSelf ? this : this.parent();
-  while (node !== null) {
-    if (action(node)) {
-      return true;
-    }
-    node = node.parent();
-  }
-  return false;
-}, forEachImmediateDescendantWithValue:function(action) {
-  this.forEachChild(function(child) {
-    if (child.getValue() !== null) {
-      action(child);
-    } else {
-      child.forEachImmediateDescendantWithValue(action);
-    }
-  });
-}, path:function() {
-  return new fb.core.util.Path(this.parent_ === null ? this.name_ : this.parent_.path() + "/" + this.name_);
-}, name:function() {
-  return this.name_;
-}, parent:function() {
-  return this.parent_;
-}, updateParents_:function() {
-  if (this.parent_ !== null) {
-    this.parent_.updateChild_(this.name_, this);
-  }
-}, updateChild_:function(childName, child) {
-  var childEmpty = child.isEmpty();
-  var childExists = fb.util.obj.contains(this.node_.children, childName);
-  if (childEmpty && childExists) {
-    delete this.node_.children[childName];
-    this.node_.childCount--;
-    this.updateParents_();
-  } else {
-    if (!childEmpty && !childExists) {
-      this.node_.children[childName] = child.node_;
-      this.node_.childCount++;
-      this.updateParents_();
-    }
-  }
-}});
-goog.provide("fb.core.util.EventEmitter");
-goog.require("fb.core.util");
-goog.require("goog.array");
-fb.core.util.EventEmitter = goog.defineClass(null, {constructor:function(allowedEvents) {
-  fb.core.util.assert(goog.isArray(allowedEvents) && allowedEvents.length > 0, "Requires a non-empty array");
-  this.allowedEvents_ = allowedEvents;
-  this.listeners_ = {};
-}, getInitialEvent:goog.abstractMethod, trigger:function(eventType, var_args) {
-  var listeners = this.listeners_[eventType] || [];
-  for (var i = 0;i < listeners.length;i++) {
-    listeners[i].callback.apply(listeners[i].context, Array.prototype.slice.call(arguments, 1));
-  }
-}, on:function(eventType, callback, context) {
-  this.validateEventType_(eventType);
-  this.listeners_[eventType] = this.listeners_[eventType] || [];
-  this.listeners_[eventType].push({callback:callback, context:context});
-  var eventData = this.getInitialEvent(eventType);
-  if (eventData) {
-    callback.apply(context, eventData);
-  }
-}, off:function(eventType, callback, context) {
-  this.validateEventType_(eventType);
-  var listeners = this.listeners_[eventType] || [];
-  for (var i = 0;i < listeners.length;i++) {
-    if (listeners[i].callback === callback && (!context || context === listeners[i].context)) {
-      listeners.splice(i, 1);
-      return;
-    }
-  }
-}, validateEventType_:function(eventType) {
-  fb.core.util.assert(goog.array.find(this.allowedEvents_, function(et) {
-    return et === eventType;
-  }), "Unknown event: " + eventType);
-}});
-goog.provide("fb.core.util.nextPushId");
-goog.require("fb.core.util");
-fb.core.util.nextPushId = function() {
-  var PUSH_CHARS = "-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz";
-  var lastPushTime = 0;
-  var lastRandChars = [];
-  return function(now) {
-    var duplicateTime = now === lastPushTime;
-    lastPushTime = now;
-    var timeStampChars = new Array(8);
-    for (var i = 7;i >= 0;i--) {
-      timeStampChars[i] = PUSH_CHARS.charAt(now % 64);
-      now = Math.floor(now / 64);
-    }
-    fb.core.util.assert(now === 0, "Cannot push at time == 0");
-    var id = timeStampChars.join("");
-    if (!duplicateTime) {
-      for (i = 0;i < 12;i++) {
-        lastRandChars[i] = Math.floor(Math.random() * 64);
-      }
-    } else {
-      for (i = 11;i >= 0 && lastRandChars[i] === 63;i--) {
-        lastRandChars[i] = 0;
-      }
-      lastRandChars[i]++;
-    }
-    for (i = 0;i < 12;i++) {
-      id += PUSH_CHARS.charAt(lastRandChars[i]);
-    }
-    fb.core.util.assert(id.length === 20, "nextPushId: Length should be 20.");
-    return id;
-  };
-}();
-goog.provide("fb.core.util.OnlineMonitor");
-goog.require("fb.core.util");
-goog.require("fb.core.util.EventEmitter");
-fb.core.util.OnlineMonitor = goog.defineClass(fb.core.util.EventEmitter, {constructor:function() {
-  fb.core.util.EventEmitter.call(this, ["online"]);
-  this.online_ = true;
-  if (typeof window !== "undefined" && typeof window.addEventListener !== "undefined") {
-    var self = this;
-    window.addEventListener("online", function() {
-      if (!self.online_) {
-        self.online_ = true;
-        self.trigger("online", true);
-      }
-    }, false);
-    window.addEventListener("offline", function() {
-      if (self.online_) {
-        self.online_ = false;
-        self.trigger("online", false);
-      }
-    }, false);
-  }
-}, getInitialEvent:function(eventType) {
-  fb.core.util.assert(eventType === "online", "Unknown event type: " + eventType);
-  return[this.online_];
-}, currentlyOnline:function() {
-  return this.online_;
-}});
-goog.addSingletonGetter(fb.core.util.OnlineMonitor);
-goog.provide("fb.core.util.VisibilityMonitor");
-goog.require("fb.core.util");
-goog.require("fb.core.util.EventEmitter");
-fb.core.util.VisibilityMonitor = goog.defineClass(fb.core.util.EventEmitter, {constructor:function() {
-  fb.core.util.EventEmitter.call(this, ["visible"]);
-  var hidden, visibilityChange;
-  if (typeof document !== "undefined" && typeof document.addEventListener !== "undefined") {
-    if (typeof document["hidden"] !== "undefined") {
-      visibilityChange = "visibilitychange";
-      hidden = "hidden";
-    } else {
-      if (typeof document["mozHidden"] !== "undefined") {
-        visibilityChange = "mozvisibilitychange";
-        hidden = "mozHidden";
-      } else {
-        if (typeof document["msHidden"] !== "undefined") {
-          visibilityChange = "msvisibilitychange";
-          hidden = "msHidden";
-        } else {
-          if (typeof document["webkitHidden"] !== "undefined") {
-            visibilityChange = "webkitvisibilitychange";
-            hidden = "webkitHidden";
-          }
-        }
-      }
-    }
-  }
-  this.visible_ = true;
-  if (visibilityChange) {
-    var self = this;
-    document.addEventListener(visibilityChange, function() {
-      var visible = !document[hidden];
-      if (visible !== self.visible_) {
-        self.visible_ = visible;
-        self.trigger("visible", visible);
-      }
-    }, false);
-  }
-}, getInitialEvent:function(eventType) {
-  fb.core.util.assert(eventType === "visible", "Unknown event type: " + eventType);
-  return[this.visible_];
-}});
-goog.addSingletonGetter(fb.core.util.VisibilityMonitor);
-goog.provide("fb.core.util.validation");
-goog.require("fb.core.util");
-goog.require("fb.core.util.Path");
-goog.require("fb.core.util.ValidationPath");
-goog.require("fb.util.obj");
-goog.require("fb.util.utf8");
-goog.require("fb.util.validation");
-fb.core.util.validation = {INVALID_KEY_REGEX_:/[\[\].#$\/\u0000-\u001F\u007F]/, INVALID_PATH_REGEX_:/[\[\].#$\u0000-\u001F\u007F]/, MAX_LEAF_SIZE_:10 * 1024 * 1024, isValidKey:function(key) {
-  return goog.isString(key) && key.length !== 0 && !fb.core.util.validation.INVALID_KEY_REGEX_.test(key);
-}, isValidPathString:function(pathString) {
-  return goog.isString(pathString) && pathString.length !== 0 && !fb.core.util.validation.INVALID_PATH_REGEX_.test(pathString);
-}, isValidRootPathString:function(pathString) {
-  if (pathString) {
-    pathString = pathString.replace(/^\/*\.info(\/|$)/, "/");
-  }
-  return fb.core.util.validation.isValidPathString(pathString);
-}, isValidPriority:function(priority) {
-  return priority === null || goog.isString(priority) || goog.isNumber(priority) && !fb.core.util.isInvalidJSONNumber(priority) || goog.isObject(priority) && fb.util.obj.contains(priority, ".sv");
-}, validateFirebaseDataArg:function(fnName, argumentNumber, data, path, optional) {
-  if (optional && !goog.isDef(data)) {
-    return;
-  }
-  fb.core.util.validation.validateFirebaseData(fb.util.validation.errorPrefix(fnName, argumentNumber, optional), data, path);
-}, validateFirebaseData:function(errorPrefix, data, path) {
-  if (path instanceof fb.core.util.Path) {
-    path = new fb.core.util.ValidationPath(path, errorPrefix);
-  }
-  if (!goog.isDef(data)) {
-    throw new Error(errorPrefix + "contains undefined " + path.toErrorString());
-  }
-  if (goog.isFunction(data)) {
-    throw new Error(errorPrefix + "contains a function " + path.toErrorString() + " with contents: " + data.toString());
-  }
-  if (fb.core.util.isInvalidJSONNumber(data)) {
-    throw new Error(errorPrefix + "contains " + data.toString() + " " + path.toErrorString());
-  }
-  if (goog.isString(data) && data.length > fb.core.util.validation.MAX_LEAF_SIZE_ / 3 && fb.util.utf8.stringLength(data) > fb.core.util.validation.MAX_LEAF_SIZE_) {
-    throw new Error(errorPrefix + "contains a string greater than " + fb.core.util.validation.MAX_LEAF_SIZE_ + " utf8 bytes " + path.toErrorString() + " ('" + data.substring(0, 50) + "...')");
-  }
-  if (goog.isObject(data)) {
-    var hasDotValue = false, hasActualChild = false;
-    fb.util.obj.foreach(data, function(key, value) {
-      if (key === ".value") {
-        hasDotValue = true;
-      } else {
-        if (key !== ".priority" && key !== ".sv") {
-          hasActualChild = true;
-          if (!fb.core.util.validation.isValidKey(key)) {
-            throw new Error(errorPrefix + " contains an invalid key (" + key + ") " + path.toErrorString() + ".  Keys must be non-empty strings " + 'and can\'t contain ".", "#", "$", "/", "[", or "]"');
-          }
-        }
-      }
-      path.push(key);
-      fb.core.util.validation.validateFirebaseData(errorPrefix, value, path);
-      path.pop();
-    });
-    if (hasDotValue && hasActualChild) {
-      throw new Error(errorPrefix + ' contains ".value" child ' + path.toErrorString() + " in addition to actual children.");
-    }
-  }
-}, validateFirebaseMergeDataArg:function(fnName, argumentNumber, data, path, optional) {
-  if (optional && !goog.isDef(data)) {
-    return;
-  }
-  if (!goog.isObject(data) || goog.isArray(data)) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + " must be an Object containing " + "the children to replace.");
-  }
-  if (fb.util.obj.contains(data, ".value")) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + ' must not contain ".value".  ' + "To overwrite with a leaf value, just use .set() instead.");
-  }
-  fb.core.util.validation.validateFirebaseDataArg(fnName, argumentNumber, data, path, optional);
-}, validatePriority:function(fnName, argumentNumber, priority, optional) {
-  if (optional && !goog.isDef(priority)) {
-    return;
-  }
-  if (fb.core.util.isInvalidJSONNumber(priority)) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + "is " + priority.toString() + ", but must be a valid Firebase priority (a string, finite number, " + "server value, or null).");
-  }
-  if (!fb.core.util.validation.isValidPriority(priority)) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + "must be a valid Firebase priority " + "(a string, finite number, server value, or null).");
-  }
-}, validateEventType:function(fnName, argumentNumber, eventType, optional) {
-  if (optional && !goog.isDef(eventType)) {
-    return;
-  }
-  switch(eventType) {
-    case "value":
-    ;
-    case "child_added":
-    ;
-    case "child_removed":
-    ;
-    case "child_changed":
-    ;
-    case "child_moved":
-      break;
-    default:
-      throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + 'must be a valid event type: "value", "child_added", "child_removed", ' + '"child_changed", or "child_moved".');;
-  }
-}, validateKey:function(fnName, argumentNumber, key, optional) {
-  if (optional && !goog.isDef(key)) {
-    return;
-  }
-  if (!fb.core.util.validation.isValidKey(key)) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + 'was an invalid key: "' + key + '".  Firebase keys must be non-empty strings and ' + 'can\'t contain ".", "#", "$", "/", "[", or "]").');
-  }
-}, validatePathString:function(fnName, argumentNumber, pathString, optional) {
-  if (optional && !goog.isDef(pathString)) {
-    return;
-  }
-  if (!fb.core.util.validation.isValidPathString(pathString)) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + 'was an invalid path: "' + pathString + '". Paths must be non-empty strings and ' + 'can\'t contain ".", "#", "$", "[", or "]"');
-  }
-}, validateRootPathString:function(fnName, argumentNumber, pathString, optional) {
-  if (pathString) {
-    pathString = pathString.replace(/^\/*\.info(\/|$)/, "/");
-  }
-  fb.core.util.validation.validatePathString(fnName, argumentNumber, pathString, optional);
-}, validateWritablePath:function(fnName, path) {
-  if (path.getFront() === ".info") {
-    throw new Error(fnName + " failed: Can't modify data under /.info/");
-  }
-}, validateUrl:function(fnName, argumentNumber, parsedUrl) {
-  var pathString = parsedUrl.path.toString();
-  if (!goog.isString(parsedUrl.repoInfo.host) || parsedUrl.repoInfo.host.length === 0 || !fb.core.util.validation.isValidKey(parsedUrl.repoInfo.namespace) || pathString.length !== 0 && !fb.core.util.validation.isValidRootPathString(pathString)) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, false) + "must be a valid firebase URL and " + 'the path can\'t contain ".", "#", "$", "[", or "]".');
-  }
-}, validateCredential:function(fnName, argumentNumber, cred, optional) {
-  if (optional && !goog.isDef(cred)) {
-    return;
-  }
-  if (!goog.isString(cred)) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + "must be a valid credential (a string).");
-  }
-}, validateBoolean:function(fnName, argumentNumber, bool, optional) {
-  if (optional && !goog.isDef(bool)) {
-    return;
-  }
-  if (!goog.isBoolean(bool)) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + "must be a boolean.");
-  }
-}, validateString:function(fnName, argumentNumber, string, optional) {
-  if (optional && !goog.isDef(string)) {
-    return;
-  }
-  if (!goog.isString(string)) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + "must be a valid string.");
-  }
-}, validateObject:function(fnName, argumentNumber, obj, optional) {
-  if (optional && !goog.isDef(obj)) {
-    return;
-  }
-  if (!goog.isObject(obj) || obj === null) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + "must be a valid object.");
-  }
-}, validateObjectContainsKey:function(fnName, argumentNumber, obj, key, optional, opt_type) {
-  if (optional && !goog.isDef(obj)) {
-    return;
-  }
-  if (!goog.isObject(obj) || obj === null || !fb.util.obj.contains(obj, key)) {
-    throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + 'must contain the key "' + key + '"');
-  }
-  if (opt_type) {
-    var val = fb.util.obj.get(obj, key);
-    if (opt_type === "string" && !goog.isString(val) || opt_type === "boolean" && !goog.isBoolean(val) || opt_type === "function" && !goog.isFunction(val) || opt_type === "object" && !goog.isObject(val)) {
-      throw new Error(fb.util.validation.errorPrefix(fnName, argumentNumber, optional) + 'must contain the key "' + key + '" with type "' + opt_type + '"');
-    }
-  }
-}};
-goog.provide("fb.core.util.CountedSet");
-goog.require("fb.core.util");
-goog.require("fb.util.obj");
-goog.require("goog.object");
-fb.core.util.CountedSet = goog.defineClass(null, {constructor:function() {
-  this.set = {};
-}, add:function(item, val) {
-  this.set[item] = val !== null ? val : true;
-}, contains:function(key) {
-  return fb.util.obj.contains(this.set, key);
-}, get:function(item) {
-  return this.contains(item) ? this.set[item] : undefined;
-}, remove:function(item) {
-  delete this.set[item];
-}, clear:function() {
-  this.set = {};
-}, isEmpty:function() {
-  return goog.object.isEmpty(this.set);
-}, count:function() {
-  return goog.object.getCount(this.set);
-}, each:function(fn) {
-  goog.object.forEach(this.set, function(v, k) {
-    fn(k, v);
-  });
-}, keys:function() {
-  var keys = [];
-  goog.object.forEach(this.set, function(v, k) {
-    keys.push(k);
-  });
-  return keys;
-}});
-goog.provide("fb.core.SparseSnapshotTree");
-goog.require("fb.core.snap.Node");
-goog.require("fb.core.snap.PriorityIndex");
-goog.require("fb.core.util.CountedSet");
-goog.require("fb.core.util.Path");
-fb.core.SparseSnapshotTree = function() {
-  this.value_ = null;
-  this.children_ = null;
-};
-fb.core.SparseSnapshotTree.prototype.find = function(path) {
-  if (this.value_ != null) {
-    return this.value_.getChild(path);
-  } else {
-    if (!path.isEmpty() && this.children_ != null) {
-      var childKey = path.getFront();
-      path = path.popFront();
-      if (this.children_.contains(childKey)) {
-        var childTree = this.children_.get(childKey);
-        return childTree.find(path);
-      } else {
-        return null;
-      }
-    } else {
-      return null;
-    }
-  }
-};
-fb.core.SparseSnapshotTree.prototype.remember = function(path, data) {
-  if (path.isEmpty()) {
-    this.value_ = data;
-    this.children_ = null;
-  } else {
-    if (this.value_ !== null) {
-      this.value_ = this.value_.updateChild(path, data);
-    } else {
-      if (this.children_ == null) {
-        this.children_ = new fb.core.util.CountedSet;
-      }
-      var childKey = path.getFront();
-      if (!this.children_.contains(childKey)) {
-        this.children_.add(childKey, new fb.core.SparseSnapshotTree);
-      }
-      var child = this.children_.get(childKey);
-      path = path.popFront();
-      child.remember(path, data);
-    }
-  }
-};
-fb.core.SparseSnapshotTree.prototype.forget = function(path) {
-  if (path.isEmpty()) {
-    this.value_ = null;
-    this.children_ = null;
-    return true;
-  } else {
-    if (this.value_ !== null) {
-      if (this.value_.isLeafNode()) {
-        return false;
-      } else {
-        var value = this.value_;
-        this.value_ = null;
-        var self = this;
-        value.forEachChild(fb.core.snap.PriorityIndex, function(key, tree) {
-          self.remember(new fb.core.util.Path(key), tree);
-        });
-        return this.forget(path);
-      }
-    } else {
-      if (this.children_ !== null) {
-        var childKey = path.getFront();
-        path = path.popFront();
-        if (this.children_.contains(childKey)) {
-          var safeToRemove = this.children_.get(childKey).forget(path);
-          if (safeToRemove) {
-            this.children_.remove(childKey);
-          }
-        }
-        if (this.children_.isEmpty()) {
-          this.children_ = null;
-          return true;
-        } else {
-          return false;
-        }
-      } else {
-        return true;
-      }
-    }
-  }
-};
-fb.core.SparseSnapshotTree.prototype.forEachTree = function(prefixPath, func) {
-  if (this.value_ !== null) {
-    func(prefixPath, this.value_);
-  } else {
-    this.forEachChild(function(key, tree) {
-      var path = new fb.core.util.Path(prefixPath.toString() + "/" + key);
-      tree.forEachTree(path, func);
-    });
-  }
-};
-fb.core.SparseSnapshotTree.prototype.forEachChild = function(func) {
-  if (this.children_ !== null) {
-    this.children_.each(function(key, tree) {
-      func(key, tree);
-    });
-  }
-};
-goog.provide("fb.login.Constants");
-fb.login.Constants = {SESSION_PERSISTENCE_KEY_PREFIX:"session", DEFAULT_SERVER_HOST:"auth.firebase.com", SERVER_HOST:"auth.firebase.com", API_VERSION:"v2", POPUP_PATH_TO_CHANNEL:"/auth/channel", POPUP_RELAY_FRAME_NAME:"__winchan_relay_frame", POPUP_CLOSE_CMD:"die", JSONP_CALLBACK_NAMESPACE:"__firebase_auth_jsonp", REDIR_REQUEST_ID_KEY:"redirect_request_id", REDIR_REQUEST_COMPLETION_KEY:"__firebase_request_key", REDIR_CLIENT_OPTIONS_KEY:"redirect_client_options", INTERNAL_REDIRECT_SENTINAL_PATH:"/blank/page.html", 
-CLIENT_OPTION_SESSION_PERSISTENCE:"remember", CLIENT_OPTION_REDIRECT_TO:"redirectTo"};
-goog.provide("fb.login.RequestInfo");
-goog.require("fb.login.Constants");
-fb.login.RequestInfo = function(opt_clientOptions, opt_transportOptions, opt_serverParams) {
-  this.clientOptions = opt_clientOptions || {};
-  this.transportOptions = opt_transportOptions || {};
-  this.serverParams = opt_serverParams || {};
-  if (!this.clientOptions[fb.login.Constants.CLIENT_OPTION_SESSION_PERSISTENCE]) {
-    this.clientOptions[fb.login.Constants.CLIENT_OPTION_SESSION_PERSISTENCE] = "default";
-  }
-};
-fb.login.RequestInfo.CLIENT_OPTIONS = [fb.login.Constants.CLIENT_OPTION_SESSION_PERSISTENCE, fb.login.Constants.CLIENT_OPTION_REDIRECT_TO];
-fb.login.RequestInfo.fromParams = function(opt_params) {
-  var clientOptions = {}, serverParams = {};
-  fb.util.obj.foreach(opt_params || {}, function(param, value) {
-    if (goog.array.contains(fb.login.RequestInfo.CLIENT_OPTIONS, param)) {
-      clientOptions[param] = value;
-    } else {
-      serverParams[param] = value;
-    }
-  });
-  return new fb.login.RequestInfo(clientOptions, {}, serverParams);
-};
-goog.provide("fb.login.SessionManager");
-goog.require("fb.core.storage");
-goog.require("fb.login.Constants");
-goog.require("fb.util.json");
-goog.require("fb.util.jwt");
-fb.login.SessionManager = function(repoInfo, stores) {
-  this.persistenceKey_ = [fb.login.Constants.SESSION_PERSISTENCE_KEY_PREFIX, repoInfo.persistenceKey, repoInfo.namespace].join(":");
-  this.stores_ = stores;
-};
-fb.login.SessionManager.prototype.set = function(data, store) {
-  if (!store) {
-    if (this.stores_.length) {
-      store = this.stores_[0];
-    } else {
-      throw new Error("fb.login.SessionManager : No storage options available!");
-    }
-  }
-  store.set(this.persistenceKey_, data);
-};
-fb.login.SessionManager.prototype.get = function() {
-  var sessions = goog.array.map(this.stores_, goog.bind(this.getFromStore_, this));
-  sessions = goog.array.filter(sessions, function(session) {
-    return session !== null;
-  });
-  goog.array.sort(sessions, function(a, b) {
-    return fb.util.jwt.issuedAtTime(b["token"]) - fb.util.jwt.issuedAtTime(a["token"]);
-  });
-  if (sessions.length > 0) {
-    return sessions.shift();
-  }
-  return null;
-};
-fb.login.SessionManager.prototype.getFromStore_ = function(store) {
-  try {
-    var session = store.get(this.persistenceKey_);
-    if (session && session["token"]) {
-      return session;
-    }
-  } catch (e) {
-  }
-  return null;
-};
-fb.login.SessionManager.prototype.clear = function(store) {
-  var stores = store ? [store] : this.stores_, self = this;
-  goog.array.forEach(this.stores_, function(store) {
-    store.remove(self.persistenceKey_);
-  });
-};
-goog.provide("fb.login.util.environment");
-fb.login.util.environment.isMobileWrapper = function() {
-  return fb.login.util.environment.isMobileCordova() || fb.login.util.environment.isMobileWindows() || fb.login.util.environment.isIosWebview();
-};
-fb.login.util.environment.isMobileCordova = function() {
-  return typeof window !== "undefined" && !!(window["cordova"] || window["phonegap"] || window["PhoneGap"]) && /ios|iphone|ipod|ipad|android|blackberry|iemobile/i.test(navigator["userAgent"]);
-};
-fb.login.util.environment.isMobileWindows = function() {
-  return typeof navigator !== "undefined" && (!!navigator["userAgent"].match(/Windows Phone/) || !!window["Windows"] && /^ms-appx:/.test(location.href));
-};
-fb.login.util.environment.isMobileFirefox = function() {
-  return typeof navigator !== "undefined" && (navigator["userAgent"].indexOf("Fennec/") !== -1 || navigator["userAgent"].indexOf("Firefox/") !== -1 && navigator["userAgent"].indexOf("Android") !== -1);
-};
-fb.login.util.environment.isIosWebview = function() {
-  return typeof navigator !== "undefined" && typeof window !== "undefined" && !!(navigator["userAgent"].match(/(iPhone|iPod|iPad).*AppleWebKit(?!.*Safari)/i) || navigator["userAgent"].match(/CriOS/) || navigator["userAgent"].match(/Twitter for iPhone/) || navigator["userAgent"].match(/FBAN\/FBIOS/) || window["navigator"]["standalone"]);
-};
-fb.login.util.environment.isHeadlessBrowser = function() {
-  return typeof navigator !== "undefined" && !!navigator["userAgent"].match(/PhantomJS/);
-};
-fb.login.util.environment.isLocalFile = function() {
-  return typeof location !== "undefined" && /^file:\//.test(location.href);
-};
-fb.login.util.environment.isIE = function() {
-  return typeof navigator !== "undefined" && !!(navigator["userAgent"].match(/MSIE/) || navigator["userAgent"].match(/Trident/));
-};
-fb.login.util.environment.isModernIE = function() {
-  if (typeof navigator === "undefined") {
-    return false;
-  }
-  var ua = navigator["userAgent"], match;
-  if (navigator["appName"] === "Microsoft Internet Explorer") {
-    match = ua.match(/MSIE ([0-9]{1,}[\.0-9]{0,})/);
-    if (match && match.length > 1) {
-      return parseFloat(match[1]) >= 8;
-    }
-  } else {
-    if (ua.indexOf("Trident") > -1) {
-      match = ua.match(/rv:([0-9]{2,2}[\.0-9]{0,})/);
-      if (match && match.length > 1) {
-        return parseFloat(match[1]) >= 8;
-      }
-    }
-  }
-  return false;
-};
-goog.provide("fb.login.transports.util");
-goog.require("fb.login.Constants");
-goog.require("fb.util");
-fb.login.transports.util.findRelay = function() {
-  var loc = window["location"], frames = window["opener"]["frames"], i;
-  for (i = frames.length - 1;i >= 0;i--) {
-    try {
-      if (frames[i]["location"]["protocol"] === window["location"]["protocol"] && frames[i]["location"]["host"] === window["location"]["host"] && frames[i]["name"] === fb.login.Constants.POPUP_RELAY_FRAME_NAME) {
-        return frames[i];
-      }
-    } catch (e) {
-    }
-  }
-  return null;
-};
-fb.login.transports.util.addListener = function(target, event, cb) {
-  if (target["attachEvent"]) {
-    target["attachEvent"]("on" + event, cb);
-  } else {
-    if (target["addEventListener"]) {
-      target["addEventListener"](event, cb, false);
-    }
-  }
-};
-fb.login.transports.util.removeListener = function(target, event, cb) {
-  if (target["detachEvent"]) {
-    target["detachEvent"]("on" + event, cb);
-  } else {
-    if (target["removeEventListener"]) {
-      target["removeEventListener"](event, cb, false);
-    }
-  }
-};
-fb.login.transports.util.extractOrigin = function(url) {
-  if (!/^https?:\/\//.test(url)) {
-    url = window["location"]["href"];
-  }
-  var m = /^(https?:\/\/[\-_a-zA-Z\.0-9:]+)/.exec(url);
-  if (m) {
-    return m[1];
-  }
-  return url;
-};
-fb.login.transports.util.extractRedirectCompletionHash = function(hashStr) {
-  var hash = "";
-  try {
-    hashStr = hashStr.replace("#", "");
-    var hashObj = fb.util.querystringDecode(hashStr);
-    if (hashObj && fb.util.obj.contains(hashObj, fb.login.Constants.REDIR_REQUEST_COMPLETION_KEY)) {
-      hash = fb.util.obj.get(hashObj, fb.login.Constants.REDIR_REQUEST_COMPLETION_KEY);
-    }
-  } catch (e) {
-  }
-  return hash;
-};
-fb.login.transports.util.replaceRedirectCompletionHash = function() {
-  try {
-    var exp = new RegExp("&" + fb.login.Constants.REDIR_REQUEST_COMPLETION_KEY + "=([a-zA-z0-9]*)");
-    document.location.hash = document.location.hash.replace(exp, "");
-  } catch (e) {
-  }
-};
-fb.login.transports.util.getBaseUrl = function() {
-  var parsedUrl = fb.core.util.parseURL(fb.login.Constants.SERVER_HOST);
-  return parsedUrl.scheme + "://" + parsedUrl.host + "/" + fb.login.Constants.API_VERSION;
-};
-fb.login.transports.util.getPopupChannelUrl = function(namespace) {
-  return fb.login.transports.util.getBaseUrl() + "/" + namespace + fb.login.Constants.POPUP_PATH_TO_CHANNEL;
-};
-goog.provide("fb.login.Transport");
-fb.login.Transport = function(options) {
-};
-fb.login.Transport.isAvailable = function() {
-};
-fb.login.Transport.prototype.open = function(url, params, onComplete) {
-};
-fb.login.Transport.prototype.classification = function() {
-};
-goog.provide("fb.login.transports.PopupReceiver");
-goog.require("fb.login.Constants");
-goog.require("fb.login.Transport");
-goog.require("fb.login.transports.util");
-goog.require("fb.login.util.environment");
-goog.require("fb.util.json");
-fb.login.transports.PopupReceiver = function(cb) {
-  var self = this;
-  this.cb = cb;
-  this.targetOrigin = "*";
-  if (fb.login.util.environment.isModernIE()) {
-    this.messageTarget = this.inboundTarget = fb.login.transports.util.findRelay();
-  } else {
-    this.messageTarget = window["opener"];
-    this.inboundTarget = window;
-  }
-  if (!self.messageTarget) {
-    throw "Unable to find relay frame";
-  }
-  fb.login.transports.util.addListener(this.inboundTarget, "message", goog.bind(this.onMessage_, this));
-  fb.login.transports.util.addListener(this.inboundTarget, "message", goog.bind(this.onDie_, this));
-  try {
-    this.doPost_({"a":"ready"});
-  } catch (e) {
-    fb.login.transports.util.addListener(this.messageTarget, "load", function(e) {
-      self.doPost_({"a":"ready"});
-    });
-  }
-  fb.login.transports.util.addListener(window, "unload", goog.bind(this.onUnload_, this));
-};
-fb.login.transports.PopupReceiver.prototype.doPost_ = function(msg) {
-  msg = fb.util.json.stringify(msg);
-  if (fb.login.util.environment.isModernIE()) {
-    this.messageTarget["doPost"](msg, this.targetOrigin);
-  } else {
-    this.messageTarget["postMessage"](msg, this.targetOrigin);
-  }
-};
-fb.login.transports.PopupReceiver.prototype.onMessage_ = function(e) {
-  var self = this, d;
-  try {
-    d = fb.util.json.eval(e["data"]);
-  } catch (err) {
-  }
-  if (!d || d["a"] !== "request") {
-    return;
-  }
-  fb.login.transports.util.removeListener(window, "message", this.onMessage_);
-  this.targetOrigin = e["origin"];
-  if (this.cb) {
-    setTimeout(function() {
-      self.cb(self.targetOrigin, d["d"], function(response, forceKeepWindowOpen) {
-        self.autoClose = !forceKeepWindowOpen;
-        self.cb = undefined;
-        self.doPost_({"a":"response", "d":response, "forceKeepWindowOpen":forceKeepWindowOpen});
-      });
-    }, 0);
-  }
-};
-fb.login.transports.PopupReceiver.prototype.onUnload_ = function() {
-  try {
-    fb.login.transports.util.removeListener(this.inboundTarget, "message", this.onDie_);
-  } catch (err) {
-  }
-  if (this.cb) {
-    this.doPost_({"a":"error", "d":"unknown closed window"});
-    this.cb = undefined;
-  }
-  try {
-    window.close();
-  } catch (err) {
-  }
-};
-fb.login.transports.PopupReceiver.prototype.onDie_ = function(e) {
-  if (this.autoClose && e["data"] === fb.login.Constants.POPUP_CLOSE_CMD) {
-    try {
-      window.close();
-    } catch (err) {
-    }
-  }
-};
-goog.provide("fb.login.transports.Redirect");
-goog.require("fb.constants");
-goog.require("fb.core.storage");
-goog.require("fb.login.Transport");
-goog.require("fb.login.transports.util");
-goog.require("fb.util");
-fb.login.transports.Redirect = function(options) {
-  this.requestId_ = goog.string.getRandomString() + goog.string.getRandomString() + goog.string.getRandomString();
-  this.options_ = options;
-};
-fb.login.transports.Redirect.prototype.open = function(url, params, cb) {
-  fb.core.storage.SessionStorage.set(fb.login.Constants.REDIR_REQUEST_ID_KEY, this.requestId_);
-  fb.core.storage.SessionStorage.set(fb.login.Constants.REDIR_REQUEST_ID_KEY, this.requestId_);
-  params["requestId"] = this.requestId_;
-  params["redirectTo"] = params["redirectTo"] || window["location"]["href"];
-  url += (/\?/.test(url) ? "" : "?") + fb.util.querystring(params);
-  window["location"] = url;
-};
-fb.login.transports.Redirect["isAvailable"] = function() {
-  return!NODE_CLIENT && !fb.login.util.environment.isLocalFile() && !fb.login.util.environment.isMobileCordova();
-};
-fb.login.transports.Redirect.prototype.classification = function() {
-  return "redirect";
-};
-goog.provide("fb.login.Errors");
-var errors = {"NETWORK_ERROR":"Unable to contact the Firebase server.", "SERVER_ERROR":"An unknown server error occurred.", "TRANSPORT_UNAVAILABLE":"There are no login transports available for the requested method.", "REQUEST_INTERRUPTED":"The browser redirected the page before the login request could complete.", "USER_CANCELLED":"The user cancelled authentication."};
-fb.login.Errors.get = function(code) {
-  var msg = fb.util.obj.get(errors, code);
-  var e = new Error(msg, code);
-  e["code"] = code;
-  return e;
-};
-goog.provide("fb.login.transports.Popup");
-goog.require("fb.core.util");
-goog.require("fb.login.Constants");
-goog.require("fb.login.Errors");
-goog.require("fb.login.Transport");
-goog.require("fb.login.transports.util");
-goog.require("fb.login.util.environment");
-goog.require("fb.util");
-goog.require("fb.util.json");
-fb.login.transports.Popup = function(options) {
-  if (!options["window_features"] || fb.login.util.environment.isMobileFirefox()) {
-    options["window_features"] = undefined;
-  }
-  if (!options["window_name"]) {
-    options["window_name"] = "_blank";
-  }
-  this.options = options;
-};
-fb.login.transports.Popup.prototype.open = function(url, params, cb) {
-  var self = this, isIE = fb.login.util.environment.isModernIE(), iframe, messageTarget;
-  if (!this.options["relay_url"]) {
-    return cb(new Error("invalid arguments: origin of url and relay_url must match"));
-  }
-  var origin = fb.login.transports.util.extractOrigin(url);
-  if (origin !== fb.login.transports.util.extractOrigin(self.options["relay_url"])) {
-    if (cb) {
-      setTimeout(function() {
-        cb(new Error("invalid arguments: origin of url and relay_url must match"));
-      }, 0);
-    }
-    return;
-  }
-  if (isIE) {
-    iframe = document.createElement("iframe");
-    iframe["setAttribute"]("src", self.options["relay_url"]);
-    iframe["style"]["display"] = "none";
-    iframe["setAttribute"]("name", fb.login.Constants.POPUP_RELAY_FRAME_NAME);
-    document["body"]["appendChild"](iframe);
-    messageTarget = iframe["contentWindow"];
-  }
-  url += (/\?/.test(url) ? "" : "?") + fb.util.querystring(params);
-  var popup = window.open(url, self.options["window_name"], self.options["window_features"]);
-  if (!messageTarget) {
-    messageTarget = popup;
-  }
-  var closeInterval = setInterval(function() {
-    if (popup && popup["closed"]) {
-      cleanup(false);
-      if (cb) {
-        cb(fb.login.Errors.get("USER_CANCELLED"));
-        cb = null;
-      }
-      return;
-    }
-  }, 500);
-  var req = fb.util.json.stringify({"a":"request", "d":params});
-  function cleanup(forceKeepWindowOpen) {
-    if (iframe) {
-      document["body"]["removeChild"](iframe);
-      iframe = undefined;
-    }
-    if (closeInterval) {
-      closeInterval = clearInterval(closeInterval);
-    }
-    fb.login.transports.util.removeListener(window, "message", onMessage);
-    fb.login.transports.util.removeListener(window, "unload", cleanup);
-    if (popup && !forceKeepWindowOpen) {
-      try {
-        popup["close"]();
-      } catch (securityViolation) {
-        messageTarget["postMessage"](fb.login.Constants.POPUP_CLOSE_CMD, origin);
-      }
-    }
-    popup = messageTarget = undefined;
-  }
-  fb.login.transports.util.addListener(window, "unload", cleanup);
-  function onMessage(e) {
-    if (e["origin"] !== origin) {
-      return;
-    }
-    try {
-      var d = fb.util.json.eval(e["data"]);
-      if (d["a"] === "ready") {
-        messageTarget["postMessage"](req, origin);
-      } else {
-        if (d["a"] === "error") {
-          cleanup(false);
-          if (cb) {
-            cb(d["d"]);
-            cb = null;
-          }
-        } else {
-          if (d["a"] === "response") {
-            cleanup(d["forceKeepWindowOpen"]);
-            if (cb) {
-              cb(null, d["d"]);
-              cb = null;
-            }
-          }
-        }
-      }
-    } catch (err) {
-    }
-  }
-  fb.login.transports.util.addListener(window, "message", onMessage);
-};
-fb.login.transports.Popup["isAvailable"] = function() {
-  return!NODE_CLIENT && "postMessage" in window && !fb.login.util.environment.isLocalFile() && !fb.login.util.environment.isMobileWrapper() && !fb.login.util.environment.isHeadlessBrowser();
-};
-fb.login.transports.Popup.prototype.classification = function() {
-  return "popup";
-};
-goog.provide("fb.login.transports.NodeHttp");
-goog.require("fb.login.Constants");
-goog.require("fb.login.Errors");
-goog.require("fb.login.Transport");
-goog.require("fb.login.transports.util");
-goog.require("fb.login.util.environment");
-goog.require("fb.util");
-goog.require("fb.util.json");
-fb.login.transports.NodeHttp = function(options) {
-  if (!options["method"]) {
-    options["method"] = "GET";
-  }
-  if (!options["headers"]) {
-    options["headers"] = {};
-  }
-  if (!options["headers"]["content_type"]) {
-    options["headers"]["content_type"] = "application/json";
-  }
-  options["headers"]["content_type"] = options["headers"]["content_type"].toLowerCase();
-  this.options = options;
-};
-fb.login.transports.NodeHttp.prototype.open = function(url, params, cb) {
-  var self = this, parsedUrl = fb.core.util.parseURL(url), http = parsedUrl.scheme === "http" ? require("http") : require("https"), method = this.options["method"], payload;
-  var headers = {"Accept":"application/json;text/plain"};
-  goog.object.extend(headers, this.options["headers"]);
-  var requestOpts = {"host":parsedUrl.host.split(":")[0], "port":parsedUrl.port, "path":parsedUrl.pathString, "method":this.options["method"].toUpperCase()};
-  if (method === "GET") {
-    requestOpts["path"] += (/\?/.test(requestOpts["path"]) ? "" : "?") + fb.util.querystring(params);
-    payload = null;
-  } else {
-    var contentType = this.options["headers"]["content_type"];
-    if (contentType === "application/json") {
-      payload = fb.util.json.stringify(params);
-    }
-    if (contentType === "application/x-www-form-urlencoded") {
-      payload = fb.util.querystring(params);
-    }
-    headers["Content-Length"] = Buffer["byteLength"](payload, "utf8");
-  }
-  requestOpts["headers"] = headers;
-  var req = http["request"](requestOpts, function(response) {
-    var res = "";
-    response["setEncoding"]("utf8");
-    response["on"]("data", function(d) {
-      res += d;
-    });
-    response["on"]("end", function() {
-      try {
-        res = fb.util.json.eval(res + "");
-      } catch (e) {
-      }
-      if (cb) {
-        cb(null, res);
-        cb = null;
-      }
-    });
-  });
-  if (method !== "GET") {
-    req["write"](payload);
-  }
-  req["on"]("error", function(e) {
-    if (e && e["code"] && (e["code"] === "ENOTFOUND" || e["code"] === "ENETDOWN")) {
-      cb(fb.login.Errors.get("NETWORK_ERROR"));
-    } else {
-      cb(fb.login.Errors.get("SERVER_ERROR"));
-    }
-    cb = null;
-  });
-  req["end"]();
-};
-fb.login.transports.NodeHttp["isAvailable"] = function() {
-  return NODE_CLIENT;
-};
-fb.login.transports.NodeHttp.prototype.classification = function() {
-  return "json";
-};
-goog.provide("fb.login.transports.XHR");
-goog.require("fb.login.Constants");
-goog.require("fb.login.Errors");
-goog.require("fb.login.Transport");
-goog.require("fb.login.transports.util");
-goog.require("fb.login.util.environment");
-goog.require("fb.util");
-goog.require("fb.util.json");
-fb.login.transports.XHR = function(options) {
-  if (!options["method"]) {
-    options["method"] = "GET";
-  }
-  if (!options["headers"]) {
-    options["headers"] = {};
-  }
-  if (!options["headers"]["content_type"]) {
-    options["headers"]["content_type"] = "application/json";
-  }
-  options["headers"]["content_type"] = options["headers"]["content_type"].toLowerCase();
-  this.options = options;
-};
-fb.login.transports.XHR.prototype.open = function(url, params, cb) {
-  var self = this;
-  var xhr = new XMLHttpRequest, method = this.options["method"].toUpperCase(), payload;
-  function handleInterrupt_(e) {
-    if (cb) {
-      cb(fb.login.Errors.get("REQUEST_INTERRUPTED"));
-      cb = null;
-    }
-  }
-  fb.login.transports.util.addListener(window, "beforeunload", handleInterrupt_);
-  xhr.onreadystatechange = function() {
-    if (cb && xhr.readyState === 4) {
-      var res;
-      if (xhr.status >= 200 && xhr.status < 300) {
-        try {
-          res = fb.util.json.eval(xhr.responseText);
-        } catch (e) {
-        }
-        cb(null, res);
-      } else {
-        if (xhr.status >= 500 && xhr.status < 600) {
-          cb(fb.login.Errors.get("SERVER_ERROR"));
-        } else {
-          cb(fb.login.Errors.get("NETWORK_ERROR"));
-        }
-      }
-      cb = null;
-      fb.login.transports.util.removeListener(window, "beforeunload", handleInterrupt_);
-    }
-  };
-  if (method === "GET") {
-    url += (/\?/.test(url) ? "" : "?") + fb.util.querystring(params);
-    payload = null;
-  } else {
-    var contentType = this.options["headers"]["content_type"];
-    if (contentType === "application/json") {
-      payload = fb.util.json.stringify(params);
-    }
-    if (contentType === "application/x-www-form-urlencoded") {
-      payload = fb.util.querystring(params);
-    }
-  }
-  xhr.open(method, url, true);
-  var headers = {"X-Requested-With":"XMLHttpRequest", "Accept":"application/json;text/plain"};
-  goog.object.extend(headers, this.options["headers"]);
-  for (var header in headers) {
-    xhr.setRequestHeader(header, headers[header]);
-  }
-  xhr.send(payload);
-};
-fb.login.transports.XHR["isAvailable"] = function() {
-  return!NODE_CLIENT && !!window["XMLHttpRequest"] && typeof(new XMLHttpRequest).responseType === "string" && (!fb.login.util.environment.isIE() || fb.login.util.environment.isModernIE());
-};
-fb.login.transports.XHR.prototype.classification = function() {
-  return "json";
-};
-goog.provide("fb.login.transports.CordovaInAppBrowser");
-goog.require("fb.core.util");
-goog.require("fb.login.Constants");
-goog.require("fb.login.Errors");
-goog.require("fb.login.RequestInfo");
-goog.require("fb.login.Transport");
-goog.require("fb.login.transports.XHR");
-goog.require("fb.login.transports.util");
-goog.require("fb.login.util.environment");
-goog.require("fb.util");
-goog.require("fb.util.json");
-fb.login.transports.CordovaInAppBrowser = function(options) {
-  this.requestId_ = goog.string.getRandomString() + goog.string.getRandomString() + goog.string.getRandomString();
-  this.options_ = options;
-};
-fb.login.transports.CordovaInAppBrowser.prototype.open = function(url, params, cb) {
-  var self = this, parsedUrl = fb.core.util.parseURL(fb.login.Constants.SERVER_HOST), windowRef;
-  function isSentinelPathMatch(url) {
-    try {
-      var a = document.createElement("a");
-      a["href"] = url;
-      return a["host"] === parsedUrl.host && a["pathname"] === fb.login.Constants.INTERNAL_REDIRECT_SENTINAL_PATH;
-    } catch (e) {
-    }
-    return false;
-  }
-  function onClose_(e) {
-    if (cb) {
-      cb(fb.login.Errors.get("USER_CANCELLED"));
-      cb = null;
-    }
-  }
-  params["requestId"] = this.requestId_;
-  params[fb.login.Constants.CLIENT_OPTION_REDIRECT_TO] = parsedUrl.scheme + "://" + parsedUrl.host + fb.login.Constants.INTERNAL_REDIRECT_SENTINAL_PATH;
-  url += /\?/.test(url) ? "" : "?";
-  url += fb.util.querystring(params);
-  windowRef = window.open(url, "_blank", "location=no");
-  if (!windowRef || !goog.isFunction(windowRef.addEventListener)) {
-    cb(fb.login.Errors.get("TRANSPORT_UNAVAILABLE"));
-    return;
-  }
-  windowRef.addEventListener("loadstart", function(e) {
-    if (!e || !e["url"] || !isSentinelPathMatch(e["url"])) {
-      return;
-    }
-    var reqKey = fb.login.transports.util.extractRedirectCompletionHash(e["url"]);
-    windowRef.removeEventListener("exit", onClose_);
-    windowRef.close();
-    var path = "/auth/session";
-    var requestInfo = new fb.login.RequestInfo(null, null, {"requestId":self.requestId_, "requestKey":reqKey});
-    self.options_["requestWithCredential"](path, requestInfo, cb);
-    cb = null;
-  });
-  windowRef.addEventListener("exit", onClose_);
-};
-fb.login.transports.CordovaInAppBrowser["isAvailable"] = function() {
-  return!NODE_CLIENT && fb.login.util.environment.isMobileCordova();
-};
-fb.login.transports.CordovaInAppBrowser.prototype.classification = function() {
-  return "redirect";
-};
-goog.provide("fb.login.transports.JSONP");
-goog.require("fb.login.Constants");
-goog.require("fb.login.Errors");
-goog.require("fb.login.Transport");
-goog.require("fb.login.transports.util");
-goog.require("fb.util");
-goog.require("fb.util.json");
-fb.login.transports.JSONP = function(options) {
-  if (!options["callback_parameter"]) {
-    options["callback_parameter"] = "callback";
-  }
-  this.options = options;
-  window[fb.login.Constants.JSONP_CALLBACK_NAMESPACE] = window[fb.login.Constants.JSONP_CALLBACK_NAMESPACE] || {};
-};
-fb.login.transports.JSONP.prototype.open = function(url, params, cb) {
-  var id = "fn" + (new Date).getTime() + Math.floor(Math.random() * 99999);
-  params[this.options["callback_parameter"]] = fb.login.Constants.JSONP_CALLBACK_NAMESPACE + "." + id;
-  url += (/\?/.test(url) ? "" : "?") + fb.util.querystring(params);
-  function handleInterrupt_(e) {
-    if (cb) {
-      cb(fb.login.Errors.get("REQUEST_INTERRUPTED"));
-      cb = null;
-    }
-  }
-  fb.login.transports.util.addListener(window, "beforeunload", handleInterrupt_);
-  function cleanup_() {
-    setTimeout(function() {
-      window[fb.login.Constants.JSONP_CALLBACK_NAMESPACE][id] = undefined;
-      if (goog.object.isEmpty(window[fb.login.Constants.JSONP_CALLBACK_NAMESPACE])) {
-        window[fb.login.Constants.JSONP_CALLBACK_NAMESPACE] = undefined;
-      }
-      try {
-        var el = document.getElementById(id);
-        if (el) {
-          el.parentNode.removeChild(el);
-        }
-      } catch (e) {
-      }
-    }, 1);
-    fb.login.transports.util.removeListener(window, "beforeunload", handleInterrupt_);
-  }
-  function onload_(res) {
-    if (cb) {
-      cb(null, res);
-      cb = null;
-    }
-    cleanup_();
-  }
-  window[fb.login.Constants.JSONP_CALLBACK_NAMESPACE][id] = onload_;
-  this.writeScriptTag_(id, url, cb);
-};
-fb.login.transports.JSONP.prototype.writeScriptTag_ = function(id, url, cb) {
-  setTimeout(function() {
-    try {
-      var js = document.createElement("script");
-      js.type = "text/javascript";
-      js.id = id;
-      js.async = true;
-      js.src = url;
-      js.onerror = function() {
-        var el = document.getElementById(id);
-        if (el !== null) {
-          el.parentNode.removeChild(el);
-        }
-        if (cb) {
-          cb(fb.login.Errors.get("NETWORK_ERROR"));
-        }
-      };
-      var ref;
-      var headElements = document.getElementsByTagName("head");
-      if (!headElements || goog.array.isEmpty(headElements)) {
-        ref = document.documentElement;
-      } else {
-        ref = headElements[0];
-      }
-      ref.appendChild(js);
-    } catch (e) {
-      if (cb) {
-        cb(fb.login.Errors.get("NETWORK_ERROR"));
-      }
-    }
-  }, 0);
-};
-fb.login.transports.JSONP["isAvailable"] = function() {
-  return!NODE_CLIENT;
-};
-fb.login.transports.JSONP.prototype.classification = function() {
-  return "json";
-};
-goog.provide("fb.login.AuthenticationManager");
-goog.require("fb.constants");
-goog.require("fb.core.storage");
-goog.require("fb.core.util");
-goog.require("fb.core.util.EventEmitter");
-goog.require("fb.login.Constants");
-goog.require("fb.login.Errors");
-goog.require("fb.login.RequestInfo");
-goog.require("fb.login.SessionManager");
-goog.require("fb.login.transports.CordovaInAppBrowser");
-goog.require("fb.login.transports.JSONP");
-goog.require("fb.login.transports.NodeHttp");
-goog.require("fb.login.transports.Popup");
-goog.require("fb.login.transports.Redirect");
-goog.require("fb.login.transports.XHR");
-fb.login.AuthenticationManager = function(repoInfo, auth, unauth, onAuthStatus) {
-  fb.core.util.EventEmitter.call(this, ["auth_status"]);
-  this.repoInfo_ = repoInfo;
-  this.authConn_ = auth;
-  this.unauthConn_ = unauth;
-  this.onAuthStatus_ = onAuthStatus;
-  this.sessionManager_ = new fb.login.SessionManager(repoInfo, [fb.core.storage.PersistentStorage, fb.core.storage.SessionStorage]);
-  this.authData_ = null;
-  this.redirectRestart_ = false;
-  this.resumeSession();
-};
-goog.inherits(fb.login.AuthenticationManager, fb.core.util.EventEmitter);
-fb.login.AuthenticationManager.prototype.getAuth = function() {
-  return this.authData_ || null;
-};
-fb.login.AuthenticationManager.prototype.resumeSession = function() {
-  var redirectRequestId = fb.core.storage.SessionStorage.get(fb.login.Constants.REDIR_REQUEST_ID_KEY), self = this;
-  if (redirectRequestId) {
-    this.finishOAuthRedirectLogin_();
-  }
-  var session = this.sessionManager_.get();
-  if (session && session["token"]) {
-    this.updateAuthStatus_(session);
-    this.authConn_(session["token"], function(status, data) {
-      self.authOnComplete_(status, data, false, session["token"], session);
-    }, function(cancelStatus, cancelReason) {
-      self.authOnCancel_("resumeSession()", cancelStatus, cancelReason);
-    });
-  } else {
-    this.updateAuthStatus_(null);
-  }
-};
-fb.login.AuthenticationManager.prototype.authenticate = function(cred, userProfile, clientOptions, opt_onComplete, opt_onCancel) {
-  if (this.repoInfo_.isDemoHost()) {
-    fb.core.util.warn("Firebase authentication is not supported on demo Firebases (*.firebaseio-demo.com). " + "To secure your Firebase, create a production Firebase at https://www.firebase.com.");
-  }
-  var self = this;
-  this.authConn_(cred, function(status, data) {
-    self.authOnComplete_(status, data, true, cred, userProfile, clientOptions || {}, opt_onComplete);
-  }, function(cancelStatus, cancelReason) {
-    self.authOnCancel_("auth()", cancelStatus, cancelReason, opt_onCancel);
-  });
-};
-fb.login.AuthenticationManager.prototype.unauthenticate = function(opt_onComplete) {
-  var self = this;
-  this.sessionManager_.clear();
-  self.updateAuthStatus_(null);
-  this.unauthConn_(function(status, errorReason) {
-    if (status === "ok") {
-      fb.core.util.callUserCallback(opt_onComplete, null);
-    } else {
-      var code = (status || "error").toUpperCase();
-      var message = code;
-      if (errorReason) {
-        message += ": " + errorReason;
-      }
-      var error = new Error(message);
-      error["code"] = code;
-      fb.core.util.callUserCallback(opt_onComplete, error);
-    }
-  });
-};
-fb.login.AuthenticationManager.prototype.authOnComplete_ = function(status, authConnResult, newSession, cred, authData, opt_clientOptions, opt_onComplete) {
-  if (status === "ok") {
-    if (newSession) {
-      var tokenPayload = authConnResult["auth"];
-      authData["auth"] = tokenPayload;
-      authData["expires"] = authConnResult["expires"];
-      authData["token"] = fb.util.jwt.isValidFormat(cred) ? cred : "";
-      var uid = null;
-      if (tokenPayload && fb.util.obj.contains(tokenPayload, "uid")) {
-        uid = fb.util.obj.get(tokenPayload, "uid");
-      } else {
-        if (fb.util.obj.contains(authData, "uid")) {
-          uid = fb.util.obj.get(authData, "uid");
-        }
-      }
-      authData["uid"] = uid;
-      var provider = "custom";
-      if (tokenPayload && fb.util.obj.contains(tokenPayload, "provider")) {
-        provider = fb.util.obj.get(tokenPayload, "provider");
-      } else {
-        if (fb.util.obj.contains(authData, "provider")) {
-          provider = fb.util.obj.get(authData, "provider");
-        }
-      }
-      authData["provider"] = provider;
-      this.sessionManager_.clear();
-      if (fb.util.jwt.isValidFormat(cred)) {
-        opt_clientOptions = opt_clientOptions || {};
-        var store = fb.core.storage.PersistentStorage;
-        if (opt_clientOptions[fb.login.Constants.CLIENT_OPTION_SESSION_PERSISTENCE] === "sessionOnly") {
-          store = fb.core.storage.SessionStorage;
-        }
-        if (opt_clientOptions[fb.login.Constants.CLIENT_OPTION_SESSION_PERSISTENCE] !== "none") {
-          this.sessionManager_.set(authData, store);
-        }
-      }
-      this.updateAuthStatus_(authData);
-    }
-    fb.core.util.callUserCallback(opt_onComplete, null, authData);
-    return;
-  }
-  this.handleBadAuthStatus_();
-  var code = (status || "error").toUpperCase();
-  var message = code;
-  if (authConnResult) {
-    message += ": " + authConnResult;
-  }
-  var error = new Error(message);
-  error["code"] = code;
-  fb.core.util.callUserCallback(opt_onComplete, error);
-};
-fb.login.AuthenticationManager.prototype.authOnCancel_ = function(fromFunction, cancelStatus, cancelReason, opt_onCancel) {
-  fb.core.util.warn(fromFunction + " was canceled: " + cancelReason);
-  this.handleBadAuthStatus_();
-  var err = new Error(cancelReason);
-  err["code"] = cancelStatus.toUpperCase();
-  fb.core.util.callUserCallback(opt_onCancel, err);
-};
-fb.login.AuthenticationManager.prototype.handleBadAuthStatus_ = function() {
-  this.sessionManager_.clear();
-  this.updateAuthStatus_(null);
-};
-fb.login.AuthenticationManager.prototype.authWithCredential = function(provider, opt_params, opt_options, opt_onComplete) {
-  this.checkServerSettingsOrThrow();
-  var requestInfo = new fb.login.RequestInfo(opt_options || {}, {}, opt_params || {});
-  var transports;
-  if (NODE_CLIENT) {
-    transports = [fb.login.transports.NodeHttp];
-  } else {
-    transports = [fb.login.transports.XHR, fb.login.transports.JSONP];
-  }
-  this.authWithTransports_(transports, "/auth/" + provider, requestInfo, opt_onComplete);
-};
-fb.login.AuthenticationManager.prototype.authWithPopup = function(provider, opt_params, opt_onComplete) {
-  this.checkServerSettingsOrThrow();
-  var transports = [fb.login.transports.Popup, fb.login.transports.CordovaInAppBrowser], requestInfo = fb.login.RequestInfo.fromParams(opt_params), width = 625, height = 625;
-  if (provider === "anonymous" || provider === "password") {
-    setTimeout(function() {
-      fb.core.util.callUserCallback(opt_onComplete, fb.login.Errors.get("TRANSPORT_UNAVAILABLE"));
-    }, 0);
-    return;
-  }
-  requestInfo.transportOptions["window_features"] = "" + "menubar=yes," + "modal=yes," + "alwaysRaised=yes" + "location=yes," + "resizable=yes," + "scrollbars=yes," + "status=yes," + "height=" + height + "," + "width=" + width + "," + "top=" + (typeof screen === "object" ? (screen["height"] - height) * .5 : 0) + "," + "left=" + (typeof screen === "object" ? (screen["width"] - width) * .5 : 0);
-  requestInfo.transportOptions["relay_url"] = fb.login.transports.util.getPopupChannelUrl(this.repoInfo_.namespace);
-  requestInfo.transportOptions["requestWithCredential"] = goog.bind(this.requestWithCredential, this);
-  this.authWithTransports_(transports, "/auth/" + provider, requestInfo, opt_onComplete);
-};
-fb.login.AuthenticationManager.prototype.authWithRedirect = function(provider, opt_params, opt_onErr) {
-  this.checkServerSettingsOrThrow();
-  var transports = [fb.login.transports.Redirect], requestInfo = fb.login.RequestInfo.fromParams(opt_params);
-  if (provider === "anonymous" || provider === "firebase") {
-    fb.core.util.callUserCallback(opt_onErr, fb.login.Errors.get("TRANSPORT_UNAVAILABLE"));
-    return;
-  }
-  fb.core.storage.SessionStorage.set(fb.login.Constants.REDIR_CLIENT_OPTIONS_KEY, requestInfo.clientOptions);
-  this.authWithTransports_(transports, "/auth/" + provider, requestInfo, opt_onErr);
-};
-fb.login.AuthenticationManager.prototype.finishOAuthRedirectLogin_ = function() {
-  var redirectRequestId = fb.core.storage.SessionStorage.get(fb.login.Constants.REDIR_REQUEST_ID_KEY);
-  if (redirectRequestId) {
-    var clientOptions = fb.core.storage.SessionStorage.get(fb.login.Constants.REDIR_CLIENT_OPTIONS_KEY);
-    fb.core.storage.SessionStorage.remove(fb.login.Constants.REDIR_REQUEST_ID_KEY);
-    fb.core.storage.SessionStorage.remove(fb.login.Constants.REDIR_CLIENT_OPTIONS_KEY);
-    var transports = [fb.login.transports.XHR, fb.login.transports.JSONP], serverParams = {"requestId":redirectRequestId, "requestKey":fb.login.transports.util.extractRedirectCompletionHash(document.location.hash)}, transportOptions = {}, requestInfo = new fb.login.RequestInfo(clientOptions, transportOptions, serverParams);
-    this.redirectRestart_ = true;
-    fb.login.transports.util.replaceRedirectCompletionHash();
-    this.authWithTransports_(transports, "/auth/session", requestInfo, function(error) {
-      this.redirectRestart_ = false;
-    }.bind(this));
-  }
-};
-fb.login.AuthenticationManager.prototype.createUser = function(params, opt_onComplete) {
-  this.checkServerSettingsOrThrow();
-  var path = "/users";
-  var requestInfo = fb.login.RequestInfo.fromParams(params);
-  requestInfo.serverParams["_method"] = "POST";
-  this.requestWithCredential(path, requestInfo, function(err, res) {
-    if (err) {
-      fb.core.util.callUserCallback(opt_onComplete, err);
-    } else {
-      fb.core.util.callUserCallback(opt_onComplete, err, res);
-    }
-  });
-};
-fb.login.AuthenticationManager.prototype.removeUser = function(params, opt_onComplete) {
-  var self = this;
-  this.checkServerSettingsOrThrow();
-  var path = "/users/" + encodeURIComponent(params["email"]);
-  var requestInfo = fb.login.RequestInfo.fromParams(params);
-  requestInfo.serverParams["_method"] = "DELETE";
-  this.requestWithCredential(path, requestInfo, function(err, res) {
-    if (!err && res && res["uid"]) {
-      if (self.authData_ && self.authData_["uid"] && self.authData_["uid"] === res["uid"]) {
-        self.unauthenticate();
-      }
-    }
-    fb.core.util.callUserCallback(opt_onComplete, err);
-  });
-};
-fb.login.AuthenticationManager.prototype.changePassword = function(params, opt_onComplete) {
-  this.checkServerSettingsOrThrow();
-  var path = "/users/" + encodeURIComponent(params["email"]) + "/password";
-  var requestInfo = fb.login.RequestInfo.fromParams(params);
-  requestInfo.serverParams["_method"] = "PUT";
-  requestInfo.serverParams["password"] = params["newPassword"];
-  this.requestWithCredential(path, requestInfo, function(err, res) {
-    fb.core.util.callUserCallback(opt_onComplete, err);
-  });
-};
-fb.login.AuthenticationManager.prototype.changeEmail = function(params, opt_onComplete) {
-  this.checkServerSettingsOrThrow();
-  var path = "/users/" + encodeURIComponent(params["oldEmail"]) + "/email";
-  var requestInfo = fb.login.RequestInfo.fromParams(params);
-  requestInfo.serverParams["_method"] = "PUT";
-  requestInfo.serverParams["email"] = params["newEmail"];
-  requestInfo.serverParams["password"] = params["password"];
-  this.requestWithCredential(path, requestInfo, function(err, res) {
-    fb.core.util.callUserCallback(opt_onComplete, err);
-  });
-};
-fb.login.AuthenticationManager.prototype.resetPassword = function(params, opt_onComplete) {
-  this.checkServerSettingsOrThrow();
-  var path = "/users/" + encodeURIComponent(params["email"]) + "/password";
-  var requestInfo = fb.login.RequestInfo.fromParams(params);
-  requestInfo.serverParams["_method"] = "POST";
-  this.requestWithCredential(path, requestInfo, function(err, res) {
-    fb.core.util.callUserCallback(opt_onComplete, err);
-  });
-};
-fb.login.AuthenticationManager.prototype.requestWithCredential = function(path, requestInfo, opt_onComplete) {
-  var transports;
-  if (NODE_CLIENT) {
-    transports = [fb.login.transports.NodeHttp];
-  } else {
-    transports = [fb.login.transports.XHR, fb.login.transports.JSONP];
-  }
-  this.requestWithTransports_(transports, path, requestInfo, opt_onComplete);
-};
-fb.login.AuthenticationManager.prototype.authWithTransports_ = function(transports, path, requestInfo, opt_onComplete) {
-  var self = this;
-  this.requestWithTransports_(transports, path, requestInfo, function onLoginReturned(err, res) {
-    if (err || !(res && res["token"] && res["uid"])) {
-      fb.core.util.callUserCallback(opt_onComplete, err || fb.login.Errors.get("UNKNOWN_ERROR"));
-    } else {
-      res = (res);
-      self.authenticate(res["token"], res, requestInfo.clientOptions, function(err, authData) {
-        if (err) {
-          fb.core.util.callUserCallback(opt_onComplete, err);
-        } else {
-          fb.core.util.callUserCallback(opt_onComplete, null, authData);
-        }
-      });
-    }
-  });
-};
-fb.login.AuthenticationManager.prototype.requestWithTransports_ = function(transports, path, requestInfo, opt_onComplete) {
-  var availableTransports = goog.array.filter(transports, function(transport) {
-    return typeof transport["isAvailable"] === "function" && transport["isAvailable"]();
-  });
-  if (availableTransports.length === 0) {
-    setTimeout(function() {
-      fb.core.util.callUserCallback(opt_onComplete, fb.login.Errors.get("TRANSPORT_UNAVAILABLE"));
-    }, 0);
-    return;
-  }
-  var transport = availableTransports.shift();
-  var transportObj = new transport(requestInfo.transportOptions);
-  var request = fb.util.obj.clone(requestInfo.serverParams);
-  request["v"] = this.versionString();
-  request["transport"] = transportObj.classification();
-  request["suppress_status_codes"] = true;
-  var url = fb.login.transports.util.getBaseUrl() + "/" + this.repoInfo_.namespace + path;
-  transportObj.open(url, request, function onTransportReturned(err, res) {
-    if (err) {
-      fb.core.util.callUserCallback(opt_onComplete, err);
-    } else {
-      if (res && res["error"]) {
-        var e = new Error(res["error"]["message"]);
-        e["code"] = res["error"]["code"];
-        e["details"] = res["error"]["details"];
-        fb.core.util.callUserCallback(opt_onComplete, e);
-      } else {
-        fb.core.util.callUserCallback(opt_onComplete, null, res);
-      }
-    }
-  });
-};
-fb.login.AuthenticationManager.prototype.updateAuthStatus_ = function(authData) {
-  var stateChanged = this.authData_ !== null || authData !== null;
-  this.authData_ = authData;
-  if (stateChanged) {
-    this.trigger("auth_status", authData);
-  }
-  this.onAuthStatus_(authData !== null);
-};
-fb.login.AuthenticationManager.prototype.getInitialEvent = function(event) {
-  fb.core.util.assert(event === "auth_status", 'initial event must be of type "auth_status"');
-  if (this.redirectRestart_) {
-    return null;
-  }
-  return[this.authData_];
-};
-fb.login.AuthenticationManager.prototype.versionString = function() {
-  return(NODE_CLIENT ? "node-" : "js-") + CLIENT_VERSION;
-};
-fb.login.AuthenticationManager.prototype.checkServerSettingsOrThrow = function() {
-  if (this.repoInfo_.isCustomHost() && fb.login.Constants.SERVER_HOST === fb.login.Constants.DEFAULT_SERVER_HOST) {
-    throw new Error("This custom Firebase server ('" + this.repoInfo_.domain + "') does not support delegated login.");
-  }
-};
-goog.provide("fb.realtime.Transport");
-goog.require("fb.core.RepoInfo");
-fb.realtime.Transport = function(connId, repoInfo, sessionId) {
-};
-fb.realtime.Transport.prototype.open = function(onMessage, onDisconnect) {
-};
-fb.realtime.Transport.prototype.start = function() {
-};
-fb.realtime.Transport.prototype.close = function() {
-};
-fb.realtime.Transport.prototype.send = function(data) {
-};
-fb.realtime.Transport.prototype.bytesReceived;
-fb.realtime.Transport.prototype.bytesSent;
-goog.provide("fb.realtime.Constants");
-fb.realtime.Constants = {PROTOCOL_VERSION:"5", VERSION_PARAM:"v", SESSION_PARAM:"s", REFERER_PARAM:"r", FORGE_REF:"f", FORGE_DOMAIN:"firebaseio.com"};
-goog.provide("fb.realtime.polling.PacketReceiver");
-fb.realtime.polling.PacketReceiver = function(onMessage) {
-  this.onMessage_ = onMessage;
-  this.pendingResponses = [];
-  this.currentResponseNum = 0;
-  this.closeAfterResponse = -1;
-  this.onClose = null;
-};
-fb.realtime.polling.PacketReceiver.prototype.closeAfter = function(responseNum, callback) {
-  this.closeAfterResponse = responseNum;
-  this.onClose = callback;
-  if (this.closeAfterResponse < this.currentResponseNum) {
-    this.onClose();
-    this.onClose = null;
-  }
-};
-fb.realtime.polling.PacketReceiver.prototype.handleResponse = function(requestNum, data) {
-  this.pendingResponses[requestNum] = data;
-  while (this.pendingResponses[this.currentResponseNum]) {
-    var toProcess = this.pendingResponses[this.currentResponseNum];
-    delete this.pendingResponses[this.currentResponseNum];
-    for (var i = 0;i < toProcess.length;++i) {
-      if (toProcess[i]) {
-        var self = this;
-        fb.core.util.exceptionGuard(function() {
-          self.onMessage_(toProcess[i]);
-        });
-      }
-    }
-    if (this.currentResponseNum === this.closeAfterResponse) {
-      if (this.onClose) {
-        clearTimeout(this.onClose);
-        this.onClose();
-        this.onClose = null;
-      }
-      break;
-    }
-    this.currentResponseNum++;
-  }
-};
-goog.provide("fb.realtime.BrowserPollConnection");
-goog.require("fb.constants");
-goog.require("fb.core.stats.StatsManager");
-goog.require("fb.core.util");
-goog.require("fb.core.util.CountedSet");
-goog.require("fb.realtime.Constants");
-goog.require("fb.realtime.Transport");
-goog.require("fb.realtime.polling.PacketReceiver");
-goog.require("fb.util.json");
-var FIREBASE_LONGPOLL_START_PARAM = "start";
-var FIREBASE_LONGPOLL_CLOSE_COMMAND = "close";
-var FIREBASE_LONGPOLL_COMMAND_CB_NAME = "pLPCommand";
-var FIREBASE_LONGPOLL_DATA_CB_NAME = "pRTLPCB";
-var FIREBASE_LONGPOLL_ID_PARAM = "id";
-var FIREBASE_LONGPOLL_PW_PARAM = "pw";
-var FIREBASE_LONGPOLL_SERIAL_PARAM = "ser";
-var FIREBASE_LONGPOLL_CALLBACK_ID_PARAM = "cb";
-var FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM = "seg";
-var FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET = "ts";
-var FIREBASE_LONGPOLL_DATA_PARAM = "d";
-var FIREBASE_LONGPOLL_DISCONN_FRAME_PARAM = "disconn";
-var FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM = "dframe";
-var MAX_URL_DATA_SIZE = 1870;
-var SEG_HEADER_SIZE = 30;
-var MAX_PAYLOAD_SIZE = MAX_URL_DATA_SIZE - SEG_HEADER_SIZE;
-var KEEPALIVE_REQUEST_INTERVAL = 25E3;
-var LP_CONNECT_TIMEOUT = 3E4;
-fb.realtime.BrowserPollConnection = function(connId, repoInfo, sessionId) {
-  this.connId = connId;
-  this.log_ = fb.core.util.logWrapper(connId);
-  this.repoInfo = repoInfo;
-  this.bytesSent = 0;
-  this.bytesReceived = 0;
-  this.stats_ = fb.core.stats.StatsManager.getCollection(repoInfo);
-  this.sessionId = sessionId;
-  this.everConnected_ = false;
-  this.urlFn = function(params) {
-    if (repoInfo.needsQueryParam()) {
-      params["ns"] = repoInfo.namespace;
-    }
-    var pairs = [];
-    for (var k in params) {
-      if (params.hasOwnProperty(k)) {
-        pairs.push(k + "=" + params[k]);
-      }
-    }
-    return(repoInfo.secure ? "https://" : "http://") + repoInfo.internalHost + "/.lp?" + pairs.join("&");
-  };
-};
-fb.realtime.BrowserPollConnection.prototype.open = function(onMessage, onDisconnect) {
-  this.curSegmentNum = 0;
-  this.onDisconnect_ = onDisconnect;
-  this.myPacketOrderer = new fb.realtime.polling.PacketReceiver(onMessage);
-  this.isClosed_ = false;
-  var self = this;
-  this.connectTimeoutTimer_ = setTimeout(function() {
-    self.log_("Timed out trying to connect.");
-    self.onClosed_();
-    self.connectTimeoutTimer_ = null;
-  }, Math.floor(LP_CONNECT_TIMEOUT));
-  fb.core.util.executeWhenDOMReady(function() {
-    if (self.isClosed_) {
-      return;
-    }
-    self.scriptTagHolder = new FirebaseIFrameScriptHolder(function(command, arg1, arg2, arg3, arg4) {
-      self.incrementIncomingBytes_(arguments);
-      if (!self.scriptTagHolder) {
-        return;
-      }
-      if (self.connectTimeoutTimer_) {
-        clearTimeout(self.connectTimeoutTimer_);
-        self.connectTimeoutTimer_ = null;
-      }
-      self.everConnected_ = true;
-      if (command == FIREBASE_LONGPOLL_START_PARAM) {
-        self.id = arg1;
-        self.password = arg2;
-      } else {
-        if (command === FIREBASE_LONGPOLL_CLOSE_COMMAND) {
-          if (arg1) {
-            self.scriptTagHolder.sendNewPolls = false;
-            self.myPacketOrderer.closeAfter(arg1, function() {
-              self.onClosed_();
-            });
-          } else {
-            self.onClosed_();
-          }
-        } else {
-          throw new Error("Unrecognized command received: " + command);
-        }
-      }
-    }, function(pN, data) {
-      self.incrementIncomingBytes_(arguments);
-      self.myPacketOrderer.handleResponse(pN, data);
-    }, function() {
-      self.onClosed_();
-    }, self.urlFn);
-    var urlParams = {};
-    urlParams[FIREBASE_LONGPOLL_START_PARAM] = "t";
-    urlParams[FIREBASE_LONGPOLL_SERIAL_PARAM] = Math.floor(Math.random() * 1E8);
-    if (self.scriptTagHolder.uniqueCallbackIdentifier) {
-      urlParams[FIREBASE_LONGPOLL_CALLBACK_ID_PARAM] = self.scriptTagHolder.uniqueCallbackIdentifier;
-    }
-    urlParams[fb.realtime.Constants.VERSION_PARAM] = fb.realtime.Constants.PROTOCOL_VERSION;
-    if (self.sessionId) {
-      urlParams[fb.realtime.Constants.SESSION_PARAM] = self.sessionId;
-    }
-    if (!NODE_CLIENT && typeof location !== "undefined" && location.href && location.href.indexOf(fb.realtime.Constants.FORGE_DOMAIN) !== -1) {
-      urlParams[fb.realtime.Constants.REFERER_PARAM] = fb.realtime.Constants.FORGE_REF;
-    }
-    var connectURL = self.urlFn(urlParams);
-    self.log_("Connecting via long-poll to " + connectURL);
-    self.scriptTagHolder.addTag(connectURL, function() {
-    });
-  });
-};
-fb.realtime.BrowserPollConnection.prototype.start = function() {
-  this.scriptTagHolder.startLongPoll(this.id, this.password);
-  this.addDisconnectPingFrame(this.id, this.password);
-};
-fb.realtime.BrowserPollConnection.forceAllow = function() {
-  fb.realtime.BrowserPollConnection.forceAllow_ = true;
-};
-fb.realtime.BrowserPollConnection.forceDisallow = function() {
-  fb.realtime.BrowserPollConnection.forceDisallow_ = true;
-};
-fb.realtime.BrowserPollConnection["isAvailable"] = function() {
-  return!fb.realtime.BrowserPollConnection.forceDisallow_ && !fb.core.util.isChromeExtensionContentScript() && !fb.core.util.isWindowsStoreApp() && (fb.realtime.BrowserPollConnection.forceAllow_ || !NODE_CLIENT);
-};
-fb.realtime.BrowserPollConnection.prototype.markConnectionHealthy = function() {
-};
-fb.realtime.BrowserPollConnection.prototype.shutdown_ = function() {
-  this.isClosed_ = true;
-  if (this.scriptTagHolder) {
-    this.scriptTagHolder.close();
-    this.scriptTagHolder = null;
-  }
-  if (this.myDisconnFrame) {
-    document.body.removeChild(this.myDisconnFrame);
-    this.myDisconnFrame = null;
-  }
-  if (this.connectTimeoutTimer_) {
-    clearTimeout(this.connectTimeoutTimer_);
-    this.connectTimeoutTimer_ = null;
-  }
-};
-fb.realtime.BrowserPollConnection.prototype.onClosed_ = function() {
-  if (!this.isClosed_) {
-    this.log_("Longpoll is closing itself");
-    this.shutdown_();
-    if (this.onDisconnect_) {
-      this.onDisconnect_(this.everConnected_);
-      this.onDisconnect_ = null;
-    }
-  }
-};
-fb.realtime.BrowserPollConnection.prototype.close = function() {
-  if (!this.isClosed_) {
-    this.log_("Longpoll is being closed.");
-    this.shutdown_();
-  }
-};
-fb.realtime.BrowserPollConnection.prototype.send = function(data) {
-  var dataStr = fb.util.json.stringify(data);
-  this.bytesSent += dataStr.length;
-  this.stats_.incrementCounter("bytes_sent", dataStr.length);
-  var base64data = fb.core.util.base64Encode(dataStr);
-  var dataSegs = fb.core.util.splitStringBySize(base64data, MAX_PAYLOAD_SIZE);
-  for (var i = 0;i < dataSegs.length;i++) {
-    this.scriptTagHolder.enqueueSegment(this.curSegmentNum, dataSegs.length, dataSegs[i]);
-    this.curSegmentNum++;
-  }
-};
-fb.realtime.BrowserPollConnection.prototype.addDisconnectPingFrame = function(id, pw) {
-  if (NODE_CLIENT) {
-    return;
-  }
-  this.myDisconnFrame = document.createElement("iframe");
-  var urlParams = {};
-  urlParams[FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM] = "t";
-  urlParams[FIREBASE_LONGPOLL_ID_PARAM] = id;
-  urlParams[FIREBASE_LONGPOLL_PW_PARAM] = pw;
-  this.myDisconnFrame.src = this.urlFn(urlParams);
-  this.myDisconnFrame.style.display = "none";
-  document.body.appendChild(this.myDisconnFrame);
-};
-fb.realtime.BrowserPollConnection.prototype.incrementIncomingBytes_ = function(args) {
-  var bytesReceived = fb.util.json.stringify(args).length;
-  this.bytesReceived += bytesReceived;
-  this.stats_.incrementCounter("bytes_received", bytesReceived);
-};
-function FirebaseIFrameScriptHolder(commandCB, onMessageCB, onDisconnectCB, urlFn) {
-  this.urlFn = urlFn;
-  this.onDisconnect = onDisconnectCB;
-  this.outstandingRequests = new fb.core.util.CountedSet;
-  this.pendingSegs = [];
-  this.currentSerial = Math.floor(Math.random() * 1E8);
-  this.sendNewPolls = true;
-  if (!NODE_CLIENT) {
-    this.uniqueCallbackIdentifier = fb.core.util.LUIDGenerator();
-    window[FIREBASE_LONGPOLL_COMMAND_CB_NAME + this.uniqueCallbackIdentifier] = commandCB;
-    window[FIREBASE_LONGPOLL_DATA_CB_NAME + this.uniqueCallbackIdentifier] = onMessageCB;
-    this.myIFrame = this.createIFrame_();
-    var script = "";
-    if (this.myIFrame.src && this.myIFrame.src.substr(0, "javascript:".length) === "javascript:") {
-      var currentDomain = document.domain;
-      script = '<script>document.domain="' + currentDomain + '";\x3c/script>';
-    }
-    var iframeContents = "<html><body>" + script + "</body></html>";
-    try {
-      this.myIFrame.doc.open();
-      this.myIFrame.doc.write(iframeContents);
-      this.myIFrame.doc.close();
-    } catch (e) {
-      fb.core.util.log("frame writing exception");
-      if (e.stack) {
-        fb.core.util.log(e.stack);
-      }
-      fb.core.util.log(e);
-    }
-  } else {
-    this.commandCB = commandCB;
-    this.onMessageCB = onMessageCB;
-  }
-}
-FirebaseIFrameScriptHolder.prototype.createIFrame_ = function() {
-  var iframe = document.createElement("iframe");
-  iframe.style.display = "none";
-  if (document.body) {
-    document.body.appendChild(iframe);
-    try {
-      var a = iframe.contentWindow.document;
-      if (!a) {
-        fb.core.util.log("No IE domain setting required");
-      }
-    } catch (e) {
-      var domain = document.domain;
-      iframe.src = "javascript:void((function(){document.open();document.domain='" + domain + "';document.close();})())";
-    }
-  } else {
-    throw "Document body has not initialized. Wait to initialize Firebase until after the document is ready.";
-  }
-  if (iframe.contentDocument) {
-    iframe.doc = iframe.contentDocument;
-  } else {
-    if (iframe.contentWindow) {
-      iframe.doc = iframe.contentWindow.document;
-    } else {
-      if (iframe.document) {
-        iframe.doc = iframe.document;
-      }
-    }
-  }
-  return iframe;
-};
-FirebaseIFrameScriptHolder.prototype.close = function() {
-  this.alive = false;
-  if (this.myIFrame) {
-    this.myIFrame.doc.body.innerHTML = "";
-    var self = this;
-    setTimeout(function() {
-      if (self.myIFrame !== null) {
-        document.body.removeChild(self.myIFrame);
-        self.myIFrame = null;
-      }
-    }, Math.floor(0));
-  }
-  if (NODE_CLIENT && this.myID) {
-    var urlParams = {};
-    urlParams[FIREBASE_LONGPOLL_DISCONN_FRAME_PARAM] = "t";
-    urlParams[FIREBASE_LONGPOLL_ID_PARAM] = this.myID;
-    urlParams[FIREBASE_LONGPOLL_PW_PARAM] = this.myPW;
-    var theURL = this.urlFn(urlParams);
-    FirebaseIFrameScriptHolder.nodeRestRequest(theURL);
-  }
-  var onDisconnect = this.onDisconnect;
-  if (onDisconnect) {
-    this.onDisconnect = null;
-    onDisconnect();
-  }
-};
-FirebaseIFrameScriptHolder.prototype.startLongPoll = function(id, pw) {
-  this.myID = id;
-  this.myPW = pw;
-  this.alive = true;
-  while (this.newRequest_()) {
-  }
-};
-FirebaseIFrameScriptHolder.prototype.newRequest_ = function() {
-  if (this.alive && this.sendNewPolls && this.outstandingRequests.count() < (this.pendingSegs.length > 0 ? 2 : 1)) {
-    this.currentSerial++;
-    var urlParams = {};
-    urlParams[FIREBASE_LONGPOLL_ID_PARAM] = this.myID;
-    urlParams[FIREBASE_LONGPOLL_PW_PARAM] = this.myPW;
-    urlParams[FIREBASE_LONGPOLL_SERIAL_PARAM] = this.currentSerial;
-    var theURL = this.urlFn(urlParams);
-    var curDataString = "";
-    var i = 0;
-    while (this.pendingSegs.length > 0) {
-      var nextSeg = this.pendingSegs[0];
-      if (nextSeg.d.length + SEG_HEADER_SIZE + curDataString.length <= MAX_URL_DATA_SIZE) {
-        var theSeg = this.pendingSegs.shift();
-        curDataString = curDataString + "&" + FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM + i + "=" + theSeg.seg + "&" + FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET + i + "=" + theSeg.ts + "&" + FIREBASE_LONGPOLL_DATA_PARAM + i + "=" + theSeg.d;
-        i++;
-      } else {
-        break;
-      }
-    }
-    theURL = theURL + curDataString;
-    this.addLongPollTag_(theURL, this.currentSerial);
-    return true;
-  } else {
-    return false;
-  }
-};
-FirebaseIFrameScriptHolder.prototype.enqueueSegment = function(segnum, totalsegs, data) {
-  this.pendingSegs.push({seg:segnum, ts:totalsegs, d:data});
-  if (this.alive) {
-    this.newRequest_();
-  }
-};
-FirebaseIFrameScriptHolder.prototype.addLongPollTag_ = function(url, serial) {
-  var self = this;
-  self.outstandingRequests.add(serial, 1);
-  var doNewRequest = function() {
-    self.outstandingRequests.remove(serial);
-    self.newRequest_();
-  };
-  var keepaliveTimeout = setTimeout(doNewRequest, Math.floor(KEEPALIVE_REQUEST_INTERVAL));
-  var readyStateCB = function() {
-    clearTimeout(keepaliveTimeout);
-    doNewRequest();
-  };
-  this.addTag(url, readyStateCB);
-};
-FirebaseIFrameScriptHolder.prototype.addTag = function(url, loadCB) {
-  if (NODE_CLIENT) {
-    this.doNodeLongPoll(url, loadCB);
-  } else {
-    var self = this;
-    setTimeout(function() {
-      try {
-        if (!self.sendNewPolls) {
-          return;
-        }
-        var newScript = self.myIFrame.doc.createElement("script");
-        newScript.type = "text/javascript";
-        newScript.async = true;
-        newScript.src = url;
-        newScript.onload = newScript.onreadystatechange = function() {
-          var rstate = newScript.readyState;
-          if (!rstate || rstate === "loaded" || rstate === "complete") {
-            newScript.onload = newScript.onreadystatechange = null;
-            if (newScript.parentNode) {
-              newScript.parentNode.removeChild(newScript);
-            }
-            loadCB();
-          }
-        };
-        newScript.onerror = function() {
-          fb.core.util.log("Long-poll script failed to load: " + url);
-          self.sendNewPolls = false;
-          self.close();
-        };
-        self.myIFrame.doc.body.appendChild(newScript);
-      } catch (e) {
-      }
-    }, Math.floor(1));
-  }
-};
-if (typeof NODE_CLIENT !== "undefined" && NODE_CLIENT) {
-  FirebaseIFrameScriptHolder.request = null;
-  FirebaseIFrameScriptHolder.nodeRestRequest = function(req, onComplete) {
-    if (!FirebaseIFrameScriptHolder.request) {
-      FirebaseIFrameScriptHolder.request = (require("request"));
-    }
-    FirebaseIFrameScriptHolder.request(req, function(error, response, body) {
-      if (error) {
-        throw "Rest request for " + req.url + " failed.";
-      }
-      if (onComplete) {
-        onComplete(body);
-      }
-    });
-  };
-  FirebaseIFrameScriptHolder.prototype.doNodeLongPoll = function(url, loadCB) {
-    var self = this;
-    FirebaseIFrameScriptHolder.nodeRestRequest({url:url, forever:true}, function(body) {
-      self.evalBody(body);
-      loadCB();
-    });
-  };
-  FirebaseIFrameScriptHolder.prototype.evalBody = function(body) {
-    eval("var jsonpCB = function(" + FIREBASE_LONGPOLL_COMMAND_CB_NAME + ", " + FIREBASE_LONGPOLL_DATA_CB_NAME + ") {" + body + "}");
-    jsonpCB(this.commandCB, this.onMessageCB);
-  };
-}
-;goog.provide("fb.realtime.WebSocketConnection");
-goog.require("fb.constants");
-goog.require("fb.core.stats.StatsManager");
-goog.require("fb.core.storage");
-goog.require("fb.core.util");
-goog.require("fb.realtime.Constants");
-goog.require("fb.realtime.Transport");
-goog.require("fb.util.json");
-var WEBSOCKET_MAX_FRAME_SIZE = 16384;
-var WEBSOCKET_KEEPALIVE_INTERVAL = 45E3;
-fb.WebSocket = null;
-if (NODE_CLIENT) {
-  goog.require("fb.core.util.NodePatches");
-  fb.WebSocket = require("faye-websocket")["Client"];
-} else {
-  if (typeof MozWebSocket !== "undefined") {
-    fb.WebSocket = MozWebSocket;
-  } else {
-    if (typeof WebSocket !== "undefined") {
-      fb.WebSocket = WebSocket;
-    }
-  }
-}
-fb.realtime.WebSocketConnection = function(connId, repoInfo, sessionId) {
-  this.connId = connId;
-  this.log_ = fb.core.util.logWrapper(this.connId);
-  this.keepaliveTimer = null;
-  this.frames = null;
-  this.totalFrames = 0;
-  this.bytesSent = 0;
-  this.bytesReceived = 0;
-  this.stats_ = fb.core.stats.StatsManager.getCollection(repoInfo);
-  this.connURL = (repoInfo.secure ? "wss://" : "ws://") + repoInfo.internalHost + "/.ws?" + fb.realtime.Constants.VERSION_PARAM + "=" + fb.realtime.Constants.PROTOCOL_VERSION;
-  if (!NODE_CLIENT && typeof location !== "undefined" && location.href && location.href.indexOf(fb.realtime.Constants.FORGE_DOMAIN) !== -1) {
-    this.connURL = this.connURL + "&" + fb.realtime.Constants.REFERER_PARAM + "=" + fb.realtime.Constants.FORGE_REF;
-  }
-  if (repoInfo.needsQueryParam()) {
-    this.connURL = this.connURL + "&ns=" + repoInfo.namespace;
-  }
-  if (sessionId) {
-    this.connURL = this.connURL + "&" + fb.realtime.Constants.SESSION_PARAM + "=" + sessionId;
-  }
-};
-fb.realtime.WebSocketConnection.prototype.open = function(onMess, onDisconn) {
-  this.onDisconnect = onDisconn;
-  this.onMessage = onMess;
-  this.log_("Websocket connecting to " + this.connURL);
-  this.everConnected_ = false;
-  fb.core.storage.PersistentStorage.set("previous_websocket_failure", true);
-  try {
-    if (NODE_CLIENT) {
-      var options = {"headers":{"User-Agent":"Firebase/" + fb.realtime.Constants.PROTOCOL_VERSION + "/" + CLIENT_VERSION + "/" + process.platform + "/Node"}};
-      this.mySock = new fb.WebSocket(this.connURL, [], options);
-    } else {
-      this.mySock = new fb.WebSocket(this.connURL);
-    }
-  } catch (e) {
-    this.log_("Error instantiating WebSocket.");
-    var error = e.message || e.data;
-    if (error) {
-      this.log_(error);
-    }
-    this.onClosed_();
-    return;
-  }
-  var self = this;
-  this.mySock.onopen = function() {
-    self.log_("Websocket connected.");
-    self.everConnected_ = true;
-  };
-  this.mySock.onclose = function() {
-    self.log_("Websocket connection was disconnected.");
-    self.mySock = null;
-    self.onClosed_();
-  };
-  this.mySock.onmessage = function(m) {
-    self.handleIncomingFrame(m);
-  };
-  this.mySock.onerror = function(e) {
-    self.log_("WebSocket error.  Closing connection.");
-    var error = e.message || e.data;
-    if (error) {
-      self.log_(error);
-    }
-    self.onClosed_();
-  };
-};
-fb.realtime.WebSocketConnection.prototype.start = function() {
-};
-fb.realtime.WebSocketConnection.forceDisallow = function() {
-  fb.realtime.WebSocketConnection.forceDisallow_ = true;
-};
-fb.realtime.WebSocketConnection["isAvailable"] = function() {
-  var isOldAndroid = false;
-  if (typeof navigator !== "undefined" && navigator.userAgent) {
-    var oldAndroidRegex = /Android ([0-9]{0,}\.[0-9]{0,})/;
-    var oldAndroidMatch = navigator.userAgent.match(oldAndroidRegex);
-    if (oldAndroidMatch && oldAndroidMatch.length > 1) {
-      if (parseFloat(oldAndroidMatch[1]) < 4.4) {
-        isOldAndroid = true;
-      }
-    }
-  }
-  return!isOldAndroid && fb.WebSocket !== null && !fb.realtime.WebSocketConnection.forceDisallow_;
-};
-fb.realtime.WebSocketConnection["responsesRequiredToBeHealthy"] = 2;
-fb.realtime.WebSocketConnection["healthyTimeout"] = 3E4;
-fb.realtime.WebSocketConnection.previouslyFailed = function() {
-  return fb.core.storage.PersistentStorage.isInMemoryStorage || fb.core.storage.PersistentStorage.get("previous_websocket_failure") === true;
-};
-fb.realtime.WebSocketConnection.prototype.markConnectionHealthy = function() {
-  fb.core.storage.PersistentStorage.remove("previous_websocket_failure");
-};
-fb.realtime.WebSocketConnection.prototype.appendFrame_ = function(data) {
-  this.frames.push(data);
-  if (this.frames.length == this.totalFrames) {
-    var fullMess = this.frames.join("");
-    this.frames = null;
-    var jsonMess = fb.util.json.eval(fullMess);
-    this.onMessage(jsonMess);
-  }
-};
-fb.realtime.WebSocketConnection.prototype.handleNewFrameCount_ = function(frameCount) {
-  this.totalFrames = frameCount;
-  this.frames = [];
-};
-fb.realtime.WebSocketConnection.prototype.extractFrameCount_ = function(data) {
-  fb.core.util.assert(this.frames === null, "We already have a frame buffer");
-  if (data.length <= 6) {
-    var frameCount = Number(data);
-    if (!isNaN(frameCount)) {
-      this.handleNewFrameCount_(frameCount);
-      return null;
-    }
-  }
-  this.handleNewFrameCount_(1);
-  return data;
-};
-fb.realtime.WebSocketConnection.prototype.handleIncomingFrame = function(mess) {
-  if (this.mySock === null) {
-    return;
-  }
-  var data = mess["data"];
-  this.bytesReceived += data.length;
-  this.stats_.incrementCounter("bytes_received", data.length);
-  this.resetKeepAlive();
-  if (this.frames !== null) {
-    this.appendFrame_(data);
-  } else {
-    var remainingData = this.extractFrameCount_(data);
-    if (remainingData !== null) {
-      this.appendFrame_(remainingData);
-    }
-  }
-};
-fb.realtime.WebSocketConnection.prototype.send = function(data) {
-  this.resetKeepAlive();
-  var dataStr = fb.util.json.stringify(data);
-  this.bytesSent += dataStr.length;
-  this.stats_.incrementCounter("bytes_sent", dataStr.length);
-  var dataSegs = fb.core.util.splitStringBySize(dataStr, WEBSOCKET_MAX_FRAME_SIZE);
-  if (dataSegs.length > 1) {
-    this.mySock.send(String(dataSegs.length));
-  }
-  for (var i = 0;i < dataSegs.length;i++) {
-    this.mySock.send(dataSegs[i]);
-  }
-};
-fb.realtime.WebSocketConnection.prototype.shutdown_ = function() {
-  this.isClosed_ = true;
-  if (this.keepaliveTimer) {
-    clearInterval(this.keepaliveTimer);
-    this.keepaliveTimer = null;
-  }
-  if (this.mySock) {
-    this.mySock.close();
-    this.mySock = null;
-  }
-};
-fb.realtime.WebSocketConnection.prototype.onClosed_ = function() {
-  if (!this.isClosed_) {
-    this.log_("WebSocket is closing itself");
-    this.shutdown_();
-    if (this.onDisconnect) {
-      this.onDisconnect(this.everConnected_);
-      this.onDisconnect = null;
-    }
-  }
-};
-fb.realtime.WebSocketConnection.prototype.close = function() {
-  if (!this.isClosed_) {
-    this.log_("WebSocket is being closed");
-    this.shutdown_();
-  }
-};
-fb.realtime.WebSocketConnection.prototype.resetKeepAlive = function() {
-  var self = this;
-  clearInterval(this.keepaliveTimer);
-  this.keepaliveTimer = setInterval(function() {
-    if (self.mySock) {
-      self.mySock.send("0");
-    }
-    self.resetKeepAlive();
-  }, Math.floor(WEBSOCKET_KEEPALIVE_INTERVAL));
-};
-goog.require("fb.constants");
-goog.require("fb.realtime.BrowserPollConnection");
-goog.require("fb.realtime.Transport");
-goog.provide("fb.realtime.TransportManager");
-goog.require("fb.realtime.WebSocketConnection");
-fb.realtime.TransportManager = function(repoInfo) {
-  this.initTransports_(repoInfo);
-};
-fb.realtime.TransportManager.ALL_TRANSPORTS = [fb.realtime.BrowserPollConnection, fb.realtime.WebSocketConnection];
-fb.realtime.TransportManager.prototype.initTransports_ = function(repoInfo) {
-  var isWebSocketsAvailable = fb.realtime.WebSocketConnection && fb.realtime.WebSocketConnection["isAvailable"]();
-  var isSkipPollConnection = isWebSocketsAvailable && !fb.realtime.WebSocketConnection.previouslyFailed();
-  if (repoInfo.webSocketOnly) {
-    if (!isWebSocketsAvailable) {
-      fb.core.util.warn("wss:// URL used, but browser isn't known to support websockets.  Trying anyway.");
-    }
-    isSkipPollConnection = true;
-  }
-  if (isSkipPollConnection) {
-    this.transports_ = [fb.realtime.WebSocketConnection];
-  } else {
-    var transports = this.transports_ = [];
-    fb.core.util.each(fb.realtime.TransportManager.ALL_TRANSPORTS, function(i, transport) {
-      if (transport && transport["isAvailable"]()) {
-        transports.push(transport);
-      }
-    });
-  }
-};
-fb.realtime.TransportManager.prototype.initialTransport = function() {
-  if (this.transports_.length > 0) {
-    return this.transports_[0];
-  } else {
-    throw new Error("No transports available");
-  }
-};
-fb.realtime.TransportManager.prototype.upgradeTransport = function() {
-  if (this.transports_.length > 1) {
-    return this.transports_[1];
-  } else {
-    return null;
-  }
-};
-goog.provide("fb.realtime.Connection");
-goog.require("fb.core.storage");
-goog.require("fb.core.util");
-goog.require("fb.realtime.Constants");
-goog.require("fb.realtime.TransportManager");
-var UPGRADE_TIMEOUT = 6E4;
-var DELAY_BEFORE_SENDING_EXTRA_REQUESTS = 5E3;
-var BYTES_SENT_HEALTHY_OVERRIDE = 10 * 1024;
-var BYTES_RECEIVED_HEALTHY_OVERRIDE = 100 * 1024;
-var REALTIME_STATE_CONNECTING = 0;
-var REALTIME_STATE_CONNECTED = 1;
-var REALTIME_STATE_DISCONNECTED = 2;
-var MESSAGE_TYPE = "t";
-var MESSAGE_DATA = "d";
-var CONTROL_SHUTDOWN = "s";
-var CONTROL_RESET = "r";
-var CONTROL_ERROR = "e";
-var CONTROL_PONG = "o";
-var SWITCH_ACK = "a";
-var END_TRANSMISSION = "n";
-var PING = "p";
-var SERVER_HELLO = "h";
-fb.realtime.Connection = function(connId, repoInfo, onMessage, onReady, onDisconnect, onKill) {
-  this.id = connId;
-  this.log_ = fb.core.util.logWrapper("c:" + this.id + ":");
-  this.onMessage_ = onMessage;
-  this.onReady_ = onReady;
-  this.onDisconnect_ = onDisconnect;
-  this.onKill_ = onKill;
-  this.repoInfo_ = repoInfo;
-  this.pendingDataMessages = [];
-  this.connectionCount = 0;
-  this.transportManager_ = new fb.realtime.TransportManager(repoInfo);
-  this.state_ = REALTIME_STATE_CONNECTING;
-  this.log_("Connection created");
-  this.start_();
-};
-fb.realtime.Connection.prototype.start_ = function() {
-  var conn = this.transportManager_.initialTransport();
-  this.conn_ = new conn(this.nextTransportId_(), this.repoInfo_);
-  this.primaryResponsesRequired_ = conn["responsesRequiredToBeHealthy"] || 0;
-  var onMessageReceived = this.connReceiver_(this.conn_);
-  var onConnectionLost = this.disconnReceiver_(this.conn_);
-  this.tx_ = this.conn_;
-  this.rx_ = this.conn_;
-  this.secondaryConn_ = null;
-  this.isHealthy_ = false;
-  var self = this;
-  setTimeout(function() {
-    self.conn_ && self.conn_.open(onMessageReceived, onConnectionLost);
-  }, Math.floor(0));
-  var healthyTimeout_ms = conn["healthyTimeout"] || 0;
-  if (healthyTimeout_ms > 0) {
-    this.healthyTimeout_ = setTimeout(function() {
-      self.healthyTimeout_ = null;
-      if (!self.isHealthy_) {
-        if (self.conn_ && self.conn_.bytesReceived > BYTES_RECEIVED_HEALTHY_OVERRIDE) {
-          self.log_("Connection exceeded healthy timeout but has received " + self.conn_.bytesReceived + " bytes.  Marking connection healthy.");
-          self.isHealthy_ = true;
-          self.conn_.markConnectionHealthy();
-        } else {
-          if (self.conn_ && self.conn_.bytesSent > BYTES_SENT_HEALTHY_OVERRIDE) {
-            self.log_("Connection exceeded healthy timeout but has sent " + self.conn_.bytesSent + " bytes.  Leaving connection alive.");
-          } else {
-            self.log_("Closing unhealthy connection after timeout.");
-            self.close();
-          }
-        }
-      }
-    }, Math.floor(healthyTimeout_ms));
-  }
-};
-fb.realtime.Connection.prototype.nextTransportId_ = function() {
-  return "c:" + this.id + ":" + this.connectionCount++;
-};
-fb.realtime.Connection.prototype.disconnReceiver_ = function(conn) {
-  var self = this;
-  return function(everConnected) {
-    if (conn === self.conn_) {
-      self.onConnectionLost_(everConnected);
-    } else {
-      if (conn === self.secondaryConn_) {
-        self.log_("Secondary connection lost.");
-        self.onSecondaryConnectionLost_();
-      } else {
-        self.log_("closing an old connection");
-      }
-    }
-  };
-};
-fb.realtime.Connection.prototype.connReceiver_ = function(conn) {
-  var self = this;
-  return function(message) {
-    if (self.state_ != REALTIME_STATE_DISCONNECTED) {
-      if (conn === self.rx_) {
-        self.onPrimaryMessageReceived_(message);
-      } else {
-        if (conn === self.secondaryConn_) {
-          self.onSecondaryMessageReceived_(message);
-        } else {
-          self.log_("message on old connection");
-        }
-      }
-    }
-  };
-};
-fb.realtime.Connection.prototype.sendRequest = function(dataMsg) {
-  var msg = {"t":"d", "d":dataMsg};
-  this.sendData_(msg);
-};
-fb.realtime.Connection.prototype.tryCleanupConnection = function() {
-  if (this.tx_ === this.secondaryConn_ && this.rx_ === this.secondaryConn_) {
-    this.log_("cleaning up and promoting a connection: " + this.secondaryConn_.connId);
-    this.conn_ = this.secondaryConn_;
-    this.secondaryConn_ = null;
-  }
-};
-fb.realtime.Connection.prototype.onSecondaryControl_ = function(controlData) {
-  if (MESSAGE_TYPE in controlData) {
-    var cmd = controlData[MESSAGE_TYPE];
-    if (cmd === SWITCH_ACK) {
-      this.upgradeIfSecondaryHealthy_();
-    } else {
-      if (cmd === CONTROL_RESET) {
-        this.log_("Got a reset on secondary, closing it");
-        this.secondaryConn_.close();
-        if (this.tx_ === this.secondaryConn_ || this.rx_ === this.secondaryConn_) {
-          this.close();
-        }
-      } else {
-        if (cmd === CONTROL_PONG) {
-          this.log_("got pong on secondary.");
-          this.secondaryResponsesRequired_--;
-          this.upgradeIfSecondaryHealthy_();
-        }
-      }
-    }
-  }
-};
-fb.realtime.Connection.prototype.onSecondaryMessageReceived_ = function(parsedData) {
-  var layer = fb.core.util.requireKey("t", parsedData);
-  var data = fb.core.util.requireKey("d", parsedData);
-  if (layer == "c") {
-    this.onSecondaryControl_(data);
-  } else {
-    if (layer == "d") {
-      this.pendingDataMessages.push(data);
-    } else {
-      throw new Error("Unknown protocol layer: " + layer);
-    }
-  }
-};
-fb.realtime.Connection.prototype.upgradeIfSecondaryHealthy_ = function() {
-  if (this.secondaryResponsesRequired_ <= 0) {
-    this.log_("Secondary connection is healthy.");
-    this.isHealthy_ = true;
-    this.secondaryConn_.markConnectionHealthy();
-    this.proceedWithUpgrade_();
-  } else {
-    this.log_("sending ping on secondary.");
-    this.secondaryConn_.send({"t":"c", "d":{"t":PING, "d":{}}});
-  }
-};
-fb.realtime.Connection.prototype.proceedWithUpgrade_ = function() {
-  this.secondaryConn_.start();
-  this.log_("sending client ack on secondary");
-  this.secondaryConn_.send({"t":"c", "d":{"t":SWITCH_ACK, "d":{}}});
-  this.log_("Ending transmission on primary");
-  this.conn_.send({"t":"c", "d":{"t":END_TRANSMISSION, "d":{}}});
-  this.tx_ = this.secondaryConn_;
-  this.tryCleanupConnection();
-};
-fb.realtime.Connection.prototype.onPrimaryMessageReceived_ = function(parsedData) {
-  var layer = fb.core.util.requireKey("t", parsedData);
-  var data = fb.core.util.requireKey("d", parsedData);
-  if (layer == "c") {
-    this.onControl_(data);
-  } else {
-    if (layer == "d") {
-      this.onDataMessage_(data);
-    }
-  }
-};
-fb.realtime.Connection.prototype.onDataMessage_ = function(message) {
-  this.onPrimaryResponse_();
-  this.onMessage_(message);
-};
-fb.realtime.Connection.prototype.onPrimaryResponse_ = function() {
-  if (!this.isHealthy_) {
-    this.primaryResponsesRequired_--;
-    if (this.primaryResponsesRequired_ <= 0) {
-      this.log_("Primary connection is healthy.");
-      this.isHealthy_ = true;
-      this.conn_.markConnectionHealthy();
-    }
-  }
-};
-fb.realtime.Connection.prototype.onControl_ = function(controlData) {
-  var cmd = fb.core.util.requireKey(MESSAGE_TYPE, controlData);
-  if (MESSAGE_DATA in controlData) {
-    var payload = controlData[MESSAGE_DATA];
-    if (cmd === SERVER_HELLO) {
-      this.onHandshake_(payload);
-    } else {
-      if (cmd === END_TRANSMISSION) {
-        this.log_("recvd end transmission on primary");
-        this.rx_ = this.secondaryConn_;
-        for (var i = 0;i < this.pendingDataMessages.length;++i) {
-          this.onDataMessage_(this.pendingDataMessages[i]);
-        }
-        this.pendingDataMessages = [];
-        this.tryCleanupConnection();
-      } else {
-        if (cmd === CONTROL_SHUTDOWN) {
-          this.onConnectionShutdown_(payload);
-        } else {
-          if (cmd === CONTROL_RESET) {
-            this.onReset_(payload);
-          } else {
-            if (cmd === CONTROL_ERROR) {
-              fb.core.util.error("Server Error: " + payload);
-            } else {
-              if (cmd === CONTROL_PONG) {
-                this.log_("got pong on primary.");
-                this.onPrimaryResponse_();
-                this.sendPingOnPrimaryIfNecessary_();
-              } else {
-                fb.core.util.error("Unknown control packet command: " + cmd);
-              }
-            }
-          }
-        }
-      }
-    }
-  }
-};
-fb.realtime.Connection.prototype.onHandshake_ = function(handshake) {
-  var timestamp = handshake["ts"];
-  var version = handshake["v"];
-  var host = handshake["h"];
-  this.sessionId = handshake["s"];
-  this.repoInfo_.updateHost(host);
-  if (this.state_ == REALTIME_STATE_CONNECTING) {
-    this.conn_.start();
-    this.onConnectionEstablished_(this.conn_, timestamp);
-    if (fb.realtime.Constants.PROTOCOL_VERSION !== version) {
-      fb.core.util.warn("Protocol version mismatch detected");
-    }
-    this.tryStartUpgrade_();
-  }
-};
-fb.realtime.Connection.prototype.tryStartUpgrade_ = function() {
-  var conn = this.transportManager_.upgradeTransport();
-  if (conn) {
-    this.startUpgrade_(conn);
-  }
-};
-fb.realtime.Connection.prototype.startUpgrade_ = function(conn) {
-  this.secondaryConn_ = new conn(this.nextTransportId_(), this.repoInfo_, this.sessionId);
-  this.secondaryResponsesRequired_ = conn["responsesRequiredToBeHealthy"] || 0;
-  var onMessage = this.connReceiver_(this.secondaryConn_);
-  var onDisconnect = this.disconnReceiver_(this.secondaryConn_);
-  this.secondaryConn_.open(onMessage, onDisconnect);
-  var self = this;
-  setTimeout(function() {
-    if (self.secondaryConn_) {
-      self.log_("Timed out trying to upgrade.");
-      self.secondaryConn_.close();
-    }
-  }, Math.floor(UPGRADE_TIMEOUT));
-};
-fb.realtime.Connection.prototype.onReset_ = function(host) {
-  this.log_("Reset packet received.  New host: " + host);
-  this.repoInfo_.updateHost(host);
-  if (this.state_ === REALTIME_STATE_CONNECTED) {
-    this.close();
-  } else {
-    this.closeConnections_();
-    this.start_();
-  }
-};
-fb.realtime.Connection.prototype.onConnectionEstablished_ = function(conn, timestamp) {
-  this.log_("Realtime connection established.");
-  this.conn_ = conn;
-  this.state_ = REALTIME_STATE_CONNECTED;
-  if (this.onReady_) {
-    this.onReady_(timestamp);
-    this.onReady_ = null;
-  }
-  var self = this;
-  if (this.primaryResponsesRequired_ === 0) {
-    this.log_("Primary connection is healthy.");
-    this.isHealthy_ = true;
-  } else {
-    setTimeout(function() {
-      self.sendPingOnPrimaryIfNecessary_();
-    }, Math.floor(DELAY_BEFORE_SENDING_EXTRA_REQUESTS));
-  }
-};
-fb.realtime.Connection.prototype.sendPingOnPrimaryIfNecessary_ = function() {
-  if (!this.isHealthy_ && this.state_ === REALTIME_STATE_CONNECTED) {
-    this.log_("sending ping on primary.");
-    this.sendData_({"t":"c", "d":{"t":PING, "d":{}}});
-  }
-};
-fb.realtime.Connection.prototype.onSecondaryConnectionLost_ = function() {
-  var conn = this.secondaryConn_;
-  this.secondaryConn_ = null;
-  if (this.tx_ === conn || this.rx_ === conn) {
-    this.close();
-  }
-};
-fb.realtime.Connection.prototype.onConnectionLost_ = function(everConnected) {
-  this.conn_ = null;
-  if (!everConnected && this.state_ === REALTIME_STATE_CONNECTING) {
-    this.log_("Realtime connection failed.");
-    if (this.repoInfo_.isCacheableHost()) {
-      fb.core.storage.PersistentStorage.remove("host:" + this.repoInfo_.host);
-      this.repoInfo_.internalHost = this.repoInfo_.host;
-    }
-  } else {
-    if (this.state_ === REALTIME_STATE_CONNECTED) {
-      this.log_("Realtime connection lost.");
-    }
-  }
-  this.close();
-};
-fb.realtime.Connection.prototype.onConnectionShutdown_ = function(reason) {
-  this.log_("Connection shutdown command received. Shutting down...");
-  if (this.onKill_) {
-    this.onKill_(reason);
-    this.onKill_ = null;
-  }
-  this.onDisconnect_ = null;
-  this.close();
-};
-fb.realtime.Connection.prototype.sendData_ = function(data) {
-  if (this.state_ !== REALTIME_STATE_CONNECTED) {
-    throw "Connection is not connected";
-  } else {
-    this.tx_.send(data);
-  }
-};
-fb.realtime.Connection.prototype.close = function() {
-  if (this.state_ !== REALTIME_STATE_DISCONNECTED) {
-    this.log_("Closing realtime connection.");
-    this.state_ = REALTIME_STATE_DISCONNECTED;
-    this.closeConnections_();
-    if (this.onDisconnect_) {
-      this.onDisconnect_();
-      this.onDisconnect_ = null;
-    }
-  }
-};
-fb.realtime.Connection.prototype.closeConnections_ = function() {
-  this.log_("Shutting down all connections");
-  if (this.conn_) {
-    this.conn_.close();
-    this.conn_ = null;
-  }
-  if (this.secondaryConn_) {
-    this.secondaryConn_.close();
-    this.secondaryConn_ = null;
-  }
-  if (this.healthyTimeout_) {
-    clearTimeout(this.healthyTimeout_);
-    this.healthyTimeout_ = null;
-  }
-};
-goog.provide("fb.core.PersistentConnection");
-goog.require("fb.core.ServerActions");
-goog.require("fb.core.util");
-goog.require("fb.core.util.OnlineMonitor");
-goog.require("fb.core.util.VisibilityMonitor");
-goog.require("fb.login.util.environment");
-goog.require("fb.realtime.Connection");
-goog.require("fb.util.json");
-goog.require("fb.util.jwt");
-var RECONNECT_MIN_DELAY = 1E3;
-var RECONNECT_MAX_DELAY_DEFAULT = 60 * 5 * 1E3;
-var RECONNECT_MAX_DELAY_FOR_ADMINS = 30 * 1E3;
-var RECONNECT_DELAY_MULTIPLIER = 1.3;
-var RECONNECT_DELAY_RESET_TIMEOUT = 3E4;
-fb.core.PersistentConnection = function(repoInfo, onDataUpdate, onConnectStatus, onServerInfoUpdate) {
-  this.id = fb.core.PersistentConnection.nextPersistentConnectionId_++;
-  this.log_ = fb.core.util.logWrapper("p:" + this.id + ":");
-  this.interrupted_ = false;
-  this.killed_ = false;
-  this.listens_ = {};
-  this.outstandingPuts_ = [];
-  this.outstandingPutCount_ = 0;
-  this.onDisconnectRequestQueue_ = [];
-  this.connected_ = false;
-  this.reconnectDelay_ = RECONNECT_MIN_DELAY;
-  this.maxReconnectDelay_ = RECONNECT_MAX_DELAY_DEFAULT;
-  this.onDataUpdate_ = onDataUpdate;
-  this.onConnectStatus_ = onConnectStatus;
-  this.onServerInfoUpdate_ = onServerInfoUpdate;
-  this.repoInfo_ = repoInfo;
-  this.securityDebugCallback_ = null;
-  this.requestCBHash_ = {};
-  this.requestNumber_ = 0;
-  this.firstConnection_ = true;
-  this.lastConnectionAttemptTime_ = null;
-  this.lastConnectionEstablishedTime_ = null;
-  this.scheduleConnect_(0);
-  fb.core.util.VisibilityMonitor.getInstance().on("visible", this.onVisible_, this);
-  if (repoInfo.host.indexOf("fblocal") === -1) {
-    fb.core.util.OnlineMonitor.getInstance().on("online", this.onOnline_, this);
-  }
-};
-fb.core.PersistentConnection.nextPersistentConnectionId_ = 0;
-fb.core.PersistentConnection.nextConnectionId_ = 0;
-fb.core.PersistentConnection.prototype.sendRequest = function(action, body, onResponse) {
-  var curReqNum = ++this.requestNumber_;
-  var msg = {"r":curReqNum, "a":action, "b":body};
-  this.log_(fb.util.json.stringify(msg));
-  fb.core.util.assert(this.connected_, "sendRequest call when we're not connected not allowed.");
-  this.realtime_.sendRequest(msg);
-  if (onResponse) {
-    this.requestCBHash_[curReqNum] = onResponse;
-  }
-};
-fb.core.PersistentConnection.prototype.listen = function(query, currentHashFn, tag, onComplete) {
-  var queryId = query.queryIdentifier();
-  var pathString = query.path.toString();
-  this.log_("Listen called for " + pathString + " " + queryId);
-  this.listens_[pathString] = this.listens_[pathString] || {};
-  fb.core.util.assert(!this.listens_[pathString][queryId], "listen() called twice for same path/queryId.");
-  var listenSpec = {onComplete:onComplete, hashFn:currentHashFn, query:query, tag:tag};
-  this.listens_[pathString][queryId] = listenSpec;
-  if (this.connected_) {
-    this.sendListen_(listenSpec);
-  }
-};
-fb.core.PersistentConnection.prototype.sendListen_ = function(listenSpec) {
-  var query = listenSpec.query;
-  var pathString = query.path.toString();
-  var queryId = query.queryIdentifier();
-  var self = this;
-  this.log_("Listen on " + pathString + " for " + queryId);
-  var req = {"p":pathString};
-  var action = "q";
-  if (listenSpec.tag) {
-    req["q"] = query.queryObject();
-    req["t"] = listenSpec.tag;
-  }
-  req["h"] = listenSpec.hashFn();
-  this.sendRequest(action, req, function(message) {
-    var payload = message["d"];
-    var status = message["s"];
-    self.warnOnListenWarnings_(payload, query);
-    var currentListenSpec = self.listens_[pathString] && self.listens_[pathString][queryId];
-    if (currentListenSpec === listenSpec) {
-      self.log_("listen response", message);
-      if (status !== "ok") {
-        self.removeListen_(pathString, queryId);
-      }
-      if (listenSpec.onComplete) {
-        listenSpec.onComplete(status, payload);
-      }
-    }
-  });
-};
-fb.core.PersistentConnection.prototype.warnOnListenWarnings_ = function(payload, query) {
-  if (payload && typeof payload === "object" && fb.util.obj.contains(payload, "w")) {
-    var warnings = fb.util.obj.get(payload, "w");
-    if (goog.isArray(warnings) && goog.array.contains(warnings, "no_index")) {
-      var indexSpec = '".indexOn": "' + query.getQueryParams().getIndex().toString() + '"';
-      var indexPath = query.path.toString();
-      fb.core.util.warn("Using an unspecified index. Consider adding " + indexSpec + " at " + indexPath + " to your security rules for better performance");
-    }
-  }
-};
-fb.core.PersistentConnection.prototype.auth = function(cred, opt_callback, opt_cancelCallback) {
-  this.credential_ = {cred:cred, firstRequestSent:false, callback:opt_callback, cancelCallback:opt_cancelCallback};
-  this.log_("Authenticating using credential: " + cred);
-  this.tryAuth();
-  this.reduceReconnectDelayIfAdminCredential_(cred);
-};
-fb.core.PersistentConnection.prototype.reduceReconnectDelayIfAdminCredential_ = function(credential) {
-  var isFirebaseSecret = credential.length == 40;
-  if (isFirebaseSecret || fb.util.jwt.isAdmin(credential)) {
-    this.log_("Admin auth credential detected.  Reducing max reconnect time.");
-    this.maxReconnectDelay_ = RECONNECT_MAX_DELAY_FOR_ADMINS;
-  }
-};
-fb.core.PersistentConnection.prototype.unauth = function(onComplete) {
-  delete this.credential_;
-  if (this.connected_) {
-    this.sendRequest("unauth", {}, function(result) {
-      var status = result["s"];
-      var errorReason = result["d"];
-      onComplete(status, errorReason);
-    });
-  }
-};
-fb.core.PersistentConnection.prototype.tryAuth = function() {
-  var authdata = this.credential_;
-  var self = this;
-  if (this.connected_ && authdata) {
-    var requestData = {"cred":authdata.cred};
-    this.sendRequest("auth", requestData, function(res) {
-      var status = res["s"];
-      var data = res["d"] || "error";
-      if (status !== "ok" && self.credential_ === authdata) {
-        delete self.credential_;
-      }
-      if (!authdata.firstRequestSent) {
-        authdata.firstRequestSent = true;
-        if (authdata.callback) {
-          authdata.callback(status, data);
-        }
-      } else {
-        if (status !== "ok" && authdata.cancelCallback) {
-          authdata.cancelCallback(status, data);
-        }
-      }
-    });
-  }
-};
-fb.core.PersistentConnection.prototype.unlisten = function(query, tag) {
-  var pathString = query.path.toString();
-  var queryId = query.queryIdentifier();
-  this.log_("Unlisten called for " + pathString + " " + queryId);
-  var listen = this.removeListen_(pathString, queryId);
-  if (listen && this.connected_) {
-    this.sendUnlisten_(pathString, queryId, query.queryObject(), tag);
-  }
-};
-fb.core.PersistentConnection.prototype.sendUnlisten_ = function(pathString, queryId, queryObj, tag) {
-  this.log_("Unlisten on " + pathString + " for " + queryId);
-  var self = this;
-  var req = {"p":pathString};
-  var action = "n";
-  if (tag) {
-    req["q"] = queryObj;
-    req["t"] = tag;
-  }
-  this.sendRequest(action, req);
-};
-fb.core.PersistentConnection.prototype.onDisconnectPut = function(pathString, data, opt_onComplete) {
-  if (this.connected_) {
-    this.sendOnDisconnect_("o", pathString, data, opt_onComplete);
-  } else {
-    this.onDisconnectRequestQueue_.push({pathString:pathString, action:"o", data:data, onComplete:opt_onComplete});
-  }
-};
-fb.core.PersistentConnection.prototype.onDisconnectMerge = function(pathString, data, opt_onComplete) {
-  if (this.connected_) {
-    this.sendOnDisconnect_("om", pathString, data, opt_onComplete);
-  } else {
-    this.onDisconnectRequestQueue_.push({pathString:pathString, action:"om", data:data, onComplete:opt_onComplete});
-  }
-};
-fb.core.PersistentConnection.prototype.onDisconnectCancel = function(pathString, opt_onComplete) {
-  if (this.connected_) {
-    this.sendOnDisconnect_("oc", pathString, null, opt_onComplete);
-  } else {
-    this.onDisconnectRequestQueue_.push({pathString:pathString, action:"oc", data:null, onComplete:opt_onComplete});
-  }
-};
-fb.core.PersistentConnection.prototype.sendOnDisconnect_ = function(action, pathString, data, opt_onComplete) {
-  var self = this;
-  var request = {"p":pathString, "d":data};
-  self.log_("onDisconnect " + action, request);
-  this.sendRequest(action, request, function(response) {
-    if (opt_onComplete) {
-      setTimeout(function() {
-        opt_onComplete(response["s"], response["d"]);
-      }, Math.floor(0));
-    }
-  });
-};
-fb.core.PersistentConnection.prototype.put = function(pathString, data, opt_onComplete, opt_hash) {
-  this.putInternal("p", pathString, data, opt_onComplete, opt_hash);
-};
-fb.core.PersistentConnection.prototype.merge = function(pathString, data, onComplete, opt_hash) {
-  this.putInternal("m", pathString, data, onComplete, opt_hash);
-};
-fb.core.PersistentConnection.prototype.putInternal = function(action, pathString, data, opt_onComplete, opt_hash) {
-  var request = {"p":pathString, "d":data};
-  if (goog.isDef(opt_hash)) {
-    request["h"] = opt_hash;
-  }
-  this.outstandingPuts_.push({action:action, request:request, onComplete:opt_onComplete});
-  this.outstandingPutCount_++;
-  var index = this.outstandingPuts_.length - 1;
-  if (this.connected_) {
-    this.sendPut_(index);
-  } else {
-    this.log_("Buffering put: " + pathString);
-  }
-};
-fb.core.PersistentConnection.prototype.sendPut_ = function(index) {
-  var self = this;
-  var action = this.outstandingPuts_[index].action;
-  var request = this.outstandingPuts_[index].request;
-  var onComplete = this.outstandingPuts_[index].onComplete;
-  this.outstandingPuts_[index].queued = this.connected_;
-  this.sendRequest(action, request, function(message) {
-    self.log_(action + " response", message);
-    delete self.outstandingPuts_[index];
-    self.outstandingPutCount_--;
-    if (self.outstandingPutCount_ === 0) {
-      self.outstandingPuts_ = [];
-    }
-    if (onComplete) {
-      onComplete(message["s"], message["d"]);
-    }
-  });
-};
-fb.core.PersistentConnection.prototype.reportStats = function(stats) {
-  if (this.connected_) {
-    var request = {"c":stats};
-    this.log_("reportStats", request);
-    this.sendRequest("s", request, function(result) {
-      var status = result["s"];
-      if (status !== "ok") {
-        var errorReason = result["d"];
-        this.log_("reportStats", "Error sending stats: " + errorReason);
-      }
-    });
-  }
-};
-fb.core.PersistentConnection.prototype.onDataMessage_ = function(message) {
-  if ("r" in message) {
-    this.log_("from server: " + fb.util.json.stringify(message));
-    var reqNum = message["r"];
-    var onResponse = this.requestCBHash_[reqNum];
-    if (onResponse) {
-      delete this.requestCBHash_[reqNum];
-      onResponse(message["b"]);
-    }
-  } else {
-    if ("error" in message) {
-      throw "A server-side error has occurred: " + message["error"];
-    } else {
-      if ("a" in message) {
-        this.onDataPush_(message["a"], message["b"]);
-      }
-    }
-  }
-};
-fb.core.PersistentConnection.prototype.onDataPush_ = function(action, body) {
-  this.log_("handleServerMessage", action, body);
-  if (action === "d") {
-    this.onDataUpdate_(body["p"], body["d"], false, body["t"]);
-  } else {
-    if (action === "m") {
-      this.onDataUpdate_(body["p"], body["d"], true, body["t"]);
-    } else {
-      if (action === "c") {
-        this.onListenRevoked_(body["p"], body["q"]);
-      } else {
-        if (action === "ac") {
-          this.onAuthRevoked_(body["s"], body["d"]);
-        } else {
-          if (action === "sd") {
-            this.onSecurityDebugPacket_(body);
-          } else {
-            fb.core.util.error("Unrecognized action received from server: " + fb.util.json.stringify(action) + "\nAre you using the latest client?");
-          }
-        }
-      }
-    }
-  }
-};
-fb.core.PersistentConnection.prototype.onReady_ = function(timestamp) {
-  this.log_("connection ready");
-  this.connected_ = true;
-  this.lastConnectionEstablishedTime_ = (new Date).getTime();
-  this.handleTimestamp_(timestamp);
-  if (this.firstConnection_) {
-    this.sendConnectStats_();
-  }
-  this.restoreState_();
-  this.firstConnection_ = false;
-  this.onConnectStatus_(true);
-};
-fb.core.PersistentConnection.prototype.scheduleConnect_ = function(timeout) {
-  fb.core.util.assert(!this.realtime_, "Scheduling a connect when we're already connected/ing?");
-  if (this.establishConnectionTimer_) {
-    clearTimeout(this.establishConnectionTimer_);
-  }
-  var self = this;
-  this.establishConnectionTimer_ = setTimeout(function() {
-    self.establishConnectionTimer_ = null;
-    self.establishConnection_();
-  }, Math.floor(timeout));
-};
-fb.core.PersistentConnection.prototype.onVisible_ = function(visible) {
-  if (visible && !this.visible_ && this.reconnectDelay_ === this.maxReconnectDelay_) {
-    this.log_("Window became visible.  Reducing delay.");
-    this.reconnectDelay_ = RECONNECT_MIN_DELAY;
-    if (!this.realtime_) {
-      this.scheduleConnect_(0);
-    }
-  }
-  this.visible_ = visible;
-};
-fb.core.PersistentConnection.prototype.onOnline_ = function(online) {
-  if (online) {
-    this.log_("Browser went online.");
-    this.reconnectDelay_ = RECONNECT_MIN_DELAY;
-    if (!this.realtime_) {
-      this.scheduleConnect_(0);
-    }
-  } else {
-    this.log_("Browser went offline.  Killing connection.");
-    if (this.realtime_) {
-      this.realtime_.close();
-    }
-  }
-};
-fb.core.PersistentConnection.prototype.onRealtimeDisconnect_ = function() {
-  this.log_("data client disconnected");
-  this.connected_ = false;
-  this.realtime_ = null;
-  this.cancelSentTransactions_();
-  this.requestCBHash_ = {};
-  if (this.shouldReconnect_()) {
-    if (!this.visible_) {
-      this.log_("Window isn't visible.  Delaying reconnect.");
-      this.reconnectDelay_ = this.maxReconnectDelay_;
-      this.lastConnectionAttemptTime_ = (new Date).getTime();
-    } else {
-      if (this.lastConnectionEstablishedTime_) {
-        var timeSinceLastConnectSucceeded = (new Date).getTime() - this.lastConnectionEstablishedTime_;
-        if (timeSinceLastConnectSucceeded > RECONNECT_DELAY_RESET_TIMEOUT) {
-          this.reconnectDelay_ = RECONNECT_MIN_DELAY;
-        }
-        this.lastConnectionEstablishedTime_ = null;
-      }
-    }
-    var timeSinceLastConnectAttempt = (new Date).getTime() - this.lastConnectionAttemptTime_;
-    var reconnectDelay = Math.max(0, this.reconnectDelay_ - timeSinceLastConnectAttempt);
-    reconnectDelay = Math.random() * reconnectDelay;
-    this.log_("Trying to reconnect in " + reconnectDelay + "ms");
-    this.scheduleConnect_(reconnectDelay);
-    this.reconnectDelay_ = Math.min(this.maxReconnectDelay_, this.reconnectDelay_ * RECONNECT_DELAY_MULTIPLIER);
-  }
-  this.onConnectStatus_(false);
-};
-fb.core.PersistentConnection.prototype.establishConnection_ = function() {
-  if (this.shouldReconnect_()) {
-    this.log_("Making a connection attempt");
-    this.lastConnectionAttemptTime_ = (new Date).getTime();
-    this.lastConnectionEstablishedTime_ = null;
-    var onDataMessage = goog.bind(this.onDataMessage_, this);
-    var onReady = goog.bind(this.onReady_, this);
-    var onDisconnect = goog.bind(this.onRealtimeDisconnect_, this);
-    var connId = this.id + ":" + fb.core.PersistentConnection.nextConnectionId_++;
-    var self = this;
-    this.realtime_ = new fb.realtime.Connection(connId, this.repoInfo_, onDataMessage, onReady, onDisconnect, function(reason) {
-      fb.core.util.warn(reason + " (" + self.repoInfo_.toString() + ")");
-      self.killed_ = true;
-    });
-  }
-};
-fb.core.PersistentConnection.prototype.interrupt = function() {
-  this.interrupted_ = true;
-  if (this.realtime_) {
-    this.realtime_.close();
-  } else {
-    if (this.establishConnectionTimer_) {
-      clearTimeout(this.establishConnectionTimer_);
-      this.establishConnectionTimer_ = null;
-    }
-    if (this.connected_) {
-      this.onRealtimeDisconnect_();
-    }
-  }
-};
-fb.core.PersistentConnection.prototype.resume = function() {
-  this.interrupted_ = false;
-  this.reconnectDelay_ = RECONNECT_MIN_DELAY;
-  if (!this.realtime_) {
-    this.scheduleConnect_(0);
-  }
-};
-fb.core.PersistentConnection.prototype.handleTimestamp_ = function(timestamp) {
-  var delta = timestamp - (new Date).getTime();
-  this.onServerInfoUpdate_({"serverTimeOffset":delta});
-};
-fb.core.PersistentConnection.prototype.cancelSentTransactions_ = function() {
-  for (var i = 0;i < this.outstandingPuts_.length;i++) {
-    var put = this.outstandingPuts_[i];
-    if (put && "h" in put.request && put.queued) {
-      if (put.onComplete) {
-        put.onComplete("disconnect");
-      }
-      delete this.outstandingPuts_[i];
-      this.outstandingPutCount_--;
-    }
-  }
-  if (this.outstandingPutCount_ === 0) {
-    this.outstandingPuts_ = [];
-  }
-};
-fb.core.PersistentConnection.prototype.onListenRevoked_ = function(pathString, opt_query) {
-  var queryId;
-  if (!opt_query) {
-    queryId = "default";
-  } else {
-    queryId = goog.array.map(opt_query, function(q) {
-      return fb.core.util.ObjectToUniqueKey(q);
-    }).join("$");
-  }
-  var listen = this.removeListen_(pathString, queryId);
-  if (listen && listen.onComplete) {
-    listen.onComplete("permission_denied");
-  }
-};
-fb.core.PersistentConnection.prototype.removeListen_ = function(pathString, queryId) {
-  var normalizedPathString = (new fb.core.util.Path(pathString)).toString();
-  var listen;
-  if (goog.isDef(this.listens_[normalizedPathString])) {
-    listen = this.listens_[normalizedPathString][queryId];
-    delete this.listens_[normalizedPathString][queryId];
-    if (goog.object.getCount(this.listens_[normalizedPathString]) === 0) {
-      delete this.listens_[normalizedPathString];
-    }
-  } else {
-    listen = undefined;
-  }
-  return listen;
-};
-fb.core.PersistentConnection.prototype.onAuthRevoked_ = function(statusCode, explanation) {
-  var cred = this.credential_;
-  delete this.credential_;
-  if (cred && cred.cancelCallback) {
-    cred.cancelCallback(statusCode, explanation);
-  }
-};
-fb.core.PersistentConnection.prototype.onSecurityDebugPacket_ = function(body) {
-  if (this.securityDebugCallback_) {
-    this.securityDebugCallback_(body);
-  } else {
-    if ("msg" in body && typeof console !== "undefined") {
-      console.log("FIREBASE: " + body["msg"].replace("\n", "\nFIREBASE: "));
-    }
-  }
-};
-fb.core.PersistentConnection.prototype.restoreState_ = function() {
-  this.tryAuth();
-  var self = this;
-  goog.object.forEach(this.listens_, function(queries, pathString) {
-    goog.object.forEach(queries, function(listenSpec) {
-      self.sendListen_(listenSpec);
-    });
-  });
-  for (var i = 0;i < this.outstandingPuts_.length;i++) {
-    if (this.outstandingPuts_[i]) {
-      this.sendPut_(i);
-    }
-  }
-  while (this.onDisconnectRequestQueue_.length) {
-    var request = this.onDisconnectRequestQueue_.shift();
-    this.sendOnDisconnect_(request.action, request.pathString, request.data, request.onComplete);
-  }
-};
-fb.core.PersistentConnection.prototype.sendConnectStats_ = function() {
-  var stats = {};
-  stats["sdk.js." + CLIENT_VERSION.replace(/\./g, "-")] = 1;
-  if (fb.login.util.environment.isMobileCordova()) {
-    stats["framework.cordova"] = 1;
-  }
-  this.reportStats(stats);
-};
-fb.core.PersistentConnection.prototype.shouldReconnect_ = function() {
-  var online = fb.core.util.OnlineMonitor.getInstance().currentlyOnline();
-  return!this.killed_ && !this.interrupted_ && online;
-};
-goog.provide("fb.api.INTERNAL");
-goog.require("fb.core.PersistentConnection");
-goog.require("fb.realtime.Connection");
-goog.require("fb.login.transports.PopupReceiver");
-goog.require("fb.login.Constants");
-fb.api.INTERNAL = {};
-fb.api.INTERNAL.forceLongPolling = function() {
-  fb.realtime.WebSocketConnection.forceDisallow();
-  fb.realtime.BrowserPollConnection.forceAllow();
-};
-goog.exportProperty(fb.api.INTERNAL, "forceLongPolling", fb.api.INTERNAL.forceLongPolling);
-fb.api.INTERNAL.forceWebSockets = function() {
-  fb.realtime.BrowserPollConnection.forceDisallow();
-};
-goog.exportProperty(fb.api.INTERNAL, "forceWebSockets", fb.api.INTERNAL.forceWebSockets);
-fb.api.INTERNAL.setSecurityDebugCallback = function(ref, callback) {
-  ref.repo.persistentConnection_.securityDebugCallback_ = callback;
-};
-goog.exportProperty(fb.api.INTERNAL, "setSecurityDebugCallback", fb.api.INTERNAL.setSecurityDebugCallback);
-fb.api.INTERNAL.stats = function(ref, showDelta) {
-  ref.repo.stats(showDelta);
-};
-goog.exportProperty(fb.api.INTERNAL, "stats", fb.api.INTERNAL.stats);
-fb.api.INTERNAL.statsIncrementCounter = function(ref, metric) {
-  ref.repo.statsIncrementCounter(metric);
-};
-goog.exportProperty(fb.api.INTERNAL, "statsIncrementCounter", fb.api.INTERNAL.statsIncrementCounter);
-fb.api.INTERNAL.dataUpdateCount = function(ref) {
-  return ref.repo.dataUpdateCount;
-};
-goog.exportProperty(fb.api.INTERNAL, "dataUpdateCount", fb.api.INTERNAL.dataUpdateCount);
-fb.api.INTERNAL.interceptServerData = function(ref, callback) {
-  return ref.repo.interceptServerData_(callback);
-};
-goog.exportProperty(fb.api.INTERNAL, "interceptServerData", fb.api.INTERNAL.interceptServerData);
-fb.api.INTERNAL.onLoginPopupOpen = function(callback) {
-  new fb.login.transports.PopupReceiver(callback);
-};
-goog.exportProperty(fb.api.INTERNAL, "onPopupOpen", fb.api.INTERNAL.onLoginPopupOpen);
-fb.api.INTERNAL.setAuthenticationServer = function(host) {
-  fb.login.Constants.SERVER_HOST = host;
-};
-goog.exportProperty(fb.api.INTERNAL, "setAuthenticationServer", fb.api.INTERNAL.setAuthenticationServer);
-goog.provide("fb.api.DataSnapshot");
-goog.require("fb.core.snap");
-goog.require("fb.core.util.SortedMap");
-goog.require("fb.core.util.validation");
-fb.api.DataSnapshot = function(node, ref, index) {
-  this.node_ = node;
-  this.query_ = ref;
-  this.index_ = index;
-};
-fb.api.DataSnapshot.prototype.val = function() {
-  fb.util.validation.validateArgCount("Firebase.DataSnapshot.val", 0, 0, arguments.length);
-  return this.node_.val();
-};
-goog.exportProperty(fb.api.DataSnapshot.prototype, "val", fb.api.DataSnapshot.prototype.val);
-fb.api.DataSnapshot.prototype.exportVal = function() {
-  fb.util.validation.validateArgCount("Firebase.DataSnapshot.exportVal", 0, 0, arguments.length);
-  return this.node_.val(true);
-};
-goog.exportProperty(fb.api.DataSnapshot.prototype, "exportVal", fb.api.DataSnapshot.prototype.exportVal);
-fb.api.DataSnapshot.prototype.exists = function() {
-  fb.util.validation.validateArgCount("Firebase.DataSnapshot.exists", 0, 0, arguments.length);
-  return!this.node_.isEmpty();
-};
-goog.exportProperty(fb.api.DataSnapshot.prototype, "exists", fb.api.DataSnapshot.prototype.exists);
-fb.api.DataSnapshot.prototype.child = function(childPathString) {
-  fb.util.validation.validateArgCount("Firebase.DataSnapshot.child", 0, 1, arguments.length);
-  if (goog.isNumber(childPathString)) {
-    childPathString = String(childPathString);
-  }
-  fb.core.util.validation.validatePathString("Firebase.DataSnapshot.child", 1, childPathString, false);
-  var childPath = new fb.core.util.Path(childPathString);
-  var childRef = this.query_.child(childPath);
-  return new fb.api.DataSnapshot(this.node_.getChild(childPath), childRef, fb.core.snap.PriorityIndex);
-};
-goog.exportProperty(fb.api.DataSnapshot.prototype, "child", fb.api.DataSnapshot.prototype.child);
-fb.api.DataSnapshot.prototype.hasChild = function(childPathString) {
-  fb.util.validation.validateArgCount("Firebase.DataSnapshot.hasChild", 1, 1, arguments.length);
-  fb.core.util.validation.validatePathString("Firebase.DataSnapshot.hasChild", 1, childPathString, false);
-  var childPath = new fb.core.util.Path(childPathString);
-  return!this.node_.getChild(childPath).isEmpty();
-};
-goog.exportProperty(fb.api.DataSnapshot.prototype, "hasChild", fb.api.DataSnapshot.prototype.hasChild);
-fb.api.DataSnapshot.prototype.getPriority = function() {
-  fb.util.validation.validateArgCount("Firebase.DataSnapshot.getPriority", 0, 0, arguments.length);
-  return(this.node_.getPriority().val());
-};
-goog.exportProperty(fb.api.DataSnapshot.prototype, "getPriority", fb.api.DataSnapshot.prototype.getPriority);
-fb.api.DataSnapshot.prototype.forEach = function(action) {
-  fb.util.validation.validateArgCount("Firebase.DataSnapshot.forEach", 1, 1, arguments.length);
-  fb.util.validation.validateCallback("Firebase.DataSnapshot.forEach", 1, action, false);
-  if (this.node_.isLeafNode()) {
-    return false;
-  }
-  var childrenNode = (this.node_);
-  var self = this;
-  return!!childrenNode.forEachChild(this.index_, function(key, node) {
-    return action(new fb.api.DataSnapshot(node, self.query_.child(key), fb.core.snap.PriorityIndex));
-  });
-};
-goog.exportProperty(fb.api.DataSnapshot.prototype, "forEach", fb.api.DataSnapshot.prototype.forEach);
-fb.api.DataSnapshot.prototype.hasChildren = function() {
-  fb.util.validation.validateArgCount("Firebase.DataSnapshot.hasChildren", 0, 0, arguments.length);
-  if (this.node_.isLeafNode()) {
-    return false;
-  } else {
-    return!this.node_.isEmpty();
-  }
-};
-goog.exportProperty(fb.api.DataSnapshot.prototype, "hasChildren", fb.api.DataSnapshot.prototype.hasChildren);
-fb.api.DataSnapshot.prototype.name = function() {
-  fb.core.util.warn("Firebase.DataSnapshot.name() being deprecated. " + "Please use Firebase.DataSnapshot.key() instead.");
-  fb.util.validation.validateArgCount("Firebase.DataSnapshot.name", 0, 0, arguments.length);
-  return this.key();
-};
-goog.exportProperty(fb.api.DataSnapshot.prototype, "name", fb.api.DataSnapshot.prototype.name);
-fb.api.DataSnapshot.prototype.key = function() {
-  fb.util.validation.validateArgCount("Firebase.DataSnapshot.key", 0, 0, arguments.length);
-  return this.query_.key();
-};
-goog.exportProperty(fb.api.DataSnapshot.prototype, "key", fb.api.DataSnapshot.prototype.key);
-fb.api.DataSnapshot.prototype.numChildren = function() {
-  fb.util.validation.validateArgCount("Firebase.DataSnapshot.numChildren", 0, 0, arguments.length);
-  return this.node_.numChildren();
-};
-goog.exportProperty(fb.api.DataSnapshot.prototype, "numChildren", fb.api.DataSnapshot.prototype.numChildren);
-fb.api.DataSnapshot.prototype.ref = function() {
-  fb.util.validation.validateArgCount("Firebase.DataSnapshot.ref", 0, 0, arguments.length);
-  return this.query_;
-};
-goog.exportProperty(fb.api.DataSnapshot.prototype, "ref", fb.api.DataSnapshot.prototype.ref);
-goog.provide("fb.core.Repo");
-goog.require("fb.api.DataSnapshot");
-goog.require("fb.core.PersistentConnection");
-goog.require("fb.core.ReadonlyRestClient");
-goog.require("fb.core.SnapshotHolder");
-goog.require("fb.core.SparseSnapshotTree");
-goog.require("fb.core.SyncTree");
-goog.require("fb.core.stats.StatsCollection");
-goog.require("fb.core.stats.StatsListener");
-goog.require("fb.core.stats.StatsManager");
-goog.require("fb.core.stats.StatsReporter");
-goog.require("fb.core.util");
-goog.require("fb.core.util.ServerValues");
-goog.require("fb.core.util.Tree");
-goog.require("fb.core.view.EventQueue");
-goog.require("fb.login.AuthenticationManager");
-goog.require("fb.util.json");
-goog.require("fb.util.jwt");
-goog.require("goog.string");
-fb.core.Repo = function(repoInfo, forceRestClient) {
-  this.repoInfo_ = repoInfo;
-  this.stats_ = fb.core.stats.StatsManager.getCollection(repoInfo);
-  this.eventQueue_ = new fb.core.view.EventQueue;
-  this.nextWriteId_ = 1;
-  this.persistentConnection_ = null;
-  this.server_;
-  if (forceRestClient || fb.core.util.beingCrawled()) {
-    this.server_ = new fb.core.ReadonlyRestClient(this.repoInfo_, goog.bind(this.onDataUpdate_, this));
-    setTimeout(goog.bind(this.onConnectStatus_, this, true), 0);
-  } else {
-    this.persistentConnection_ = new fb.core.PersistentConnection(this.repoInfo_, goog.bind(this.onDataUpdate_, this), goog.bind(this.onConnectStatus_, this), goog.bind(this.onServerInfoUpdate_, this));
-    this.server_ = this.persistentConnection_;
-  }
-  this.statsReporter_ = fb.core.stats.StatsManager.getOrCreateReporter(repoInfo, goog.bind(function() {
-    return new fb.core.stats.StatsReporter(this.stats_, this.server_);
-  }, this));
-  this.transactions_init_();
-  this.infoData_ = new fb.core.SnapshotHolder;
-  var self = this;
-  this.infoSyncTree_ = new fb.core.SyncTree({startListening:function(query, tag, currentHashFn, onComplete) {
-    var infoEvents = [];
-    var node = self.infoData_.getNode(query.path);
-    if (!node.isEmpty()) {
-      infoEvents = self.infoSyncTree_.applyServerOverwrite(query.path, node);
-      setTimeout(function() {
-        onComplete("ok");
-      }, 0);
-    }
-    return infoEvents;
-  }, stopListening:goog.nullFunction});
-  this.updateInfo_("connected", false);
-  this.onDisconnect_ = new fb.core.SparseSnapshotTree;
-  this.auth = new fb.login.AuthenticationManager(repoInfo, goog.bind(this.server_.auth, this.server_), goog.bind(this.server_.unauth, this.server_), goog.bind(this.onAuthStatus_, this));
-  this.dataUpdateCount = 0;
-  this.interceptServerDataCallback_ = null;
-  this.serverSyncTree_ = new fb.core.SyncTree({startListening:function(query, tag, currentHashFn, onComplete) {
-    self.server_.listen(query, currentHashFn, tag, function(status, data) {
-      var events = onComplete(status, data);
-      self.eventQueue_.raiseEventsForChangedPath(query.path, events);
-    });
-    return[];
-  }, stopListening:function(query, tag) {
-    self.server_.unlisten(query, tag);
-  }});
-};
-fb.core.Repo.prototype.toString = function() {
-  return(this.repoInfo_.secure ? "https://" : "http://") + this.repoInfo_.host;
-};
-fb.core.Repo.prototype.name = function() {
-  return this.repoInfo_.namespace;
-};
-fb.core.Repo.prototype.serverTime = function() {
-  var offsetNode = this.infoData_.getNode(new fb.core.util.Path(".info/serverTimeOffset"));
-  var offset = (offsetNode.val()) || 0;
-  return(new Date).getTime() + offset;
-};
-fb.core.Repo.prototype.generateServerValues = function() {
-  return fb.core.util.ServerValues.generateWithValues({"timestamp":this.serverTime()});
-};
-fb.core.Repo.prototype.onDataUpdate_ = function(pathString, data, isMerge, tag) {
-  this.dataUpdateCount++;
-  var path = new fb.core.util.Path(pathString);
-  data = this.interceptServerDataCallback_ ? this.interceptServerDataCallback_(pathString, data) : data;
-  var events = [];
-  if (tag) {
-    if (isMerge) {
-      var taggedChildren = goog.object.map((data), function(raw) {
-        return fb.core.snap.NodeFromJSON(raw);
-      });
-      events = this.serverSyncTree_.applyTaggedQueryMerge(path, taggedChildren, tag);
-    } else {
-      var taggedSnap = fb.core.snap.NodeFromJSON(data);
-      events = this.serverSyncTree_.applyTaggedQueryOverwrite(path, taggedSnap, tag);
-    }
-  } else {
-    if (isMerge) {
-      var changedChildren = goog.object.map((data), function(raw) {
-        return fb.core.snap.NodeFromJSON(raw);
-      });
-      events = this.serverSyncTree_.applyServerMerge(path, changedChildren);
-    } else {
-      var snap = fb.core.snap.NodeFromJSON(data);
-      events = this.serverSyncTree_.applyServerOverwrite(path, snap);
-    }
-  }
-  var affectedPath = path;
-  if (events.length > 0) {
-    affectedPath = this.rerunTransactions_(path);
-  }
-  this.eventQueue_.raiseEventsForChangedPath(affectedPath, events);
-};
-fb.core.Repo.prototype.interceptServerData_ = function(callback) {
-  this.interceptServerDataCallback_ = callback;
-};
-fb.core.Repo.prototype.onConnectStatus_ = function(connectStatus) {
-  this.updateInfo_("connected", connectStatus);
-  if (connectStatus === false) {
-    this.runOnDisconnectEvents_();
-  }
-};
-fb.core.Repo.prototype.onServerInfoUpdate_ = function(updates) {
-  var self = this;
-  fb.core.util.each(updates, function(value, key) {
-    self.updateInfo_(key, value);
-  });
-};
-fb.core.Repo.prototype.onAuthStatus_ = function(authStatus) {
-  this.updateInfo_("authenticated", authStatus);
-};
-fb.core.Repo.prototype.updateInfo_ = function(pathString, value) {
-  var path = new fb.core.util.Path("/.info/" + pathString);
-  var newNode = fb.core.snap.NodeFromJSON(value);
-  this.infoData_.updateSnapshot(path, newNode);
-  var events = this.infoSyncTree_.applyServerOverwrite(path, newNode);
-  this.eventQueue_.raiseEventsForChangedPath(path, events);
-};
-fb.core.Repo.prototype.getNextWriteId_ = function() {
-  return this.nextWriteId_++;
-};
-fb.core.Repo.prototype.setWithPriority = function(path, newVal, newPriority, onComplete) {
-  this.log_("set", {path:path.toString(), value:newVal, priority:newPriority});
-  var serverValues = this.generateServerValues();
-  var newNodeUnresolved = fb.core.snap.NodeFromJSON(newVal, newPriority);
-  var newNode = fb.core.util.ServerValues.resolveDeferredValueSnapshot(newNodeUnresolved, serverValues);
-  var writeId = this.getNextWriteId_();
-  var events = this.serverSyncTree_.applyUserOverwrite(path, newNode, writeId, true);
-  this.eventQueue_.queueEvents(events);
-  var self = this;
-  this.server_.put(path.toString(), newNodeUnresolved.val(true), function(status, errorReason) {
-    var success = status === "ok";
-    if (!success) {
-      fb.core.util.warn("set at " + path + " failed: " + status);
-    }
-    var clearEvents = self.serverSyncTree_.ackUserWrite(writeId, !success);
-    self.eventQueue_.raiseEventsForChangedPath(path, clearEvents);
-    self.callOnCompleteCallback(onComplete, status, errorReason);
-  });
-  var affectedPath = this.abortTransactions_(path);
-  this.rerunTransactions_(affectedPath);
-  this.eventQueue_.raiseEventsForChangedPath(affectedPath, []);
-};
-fb.core.Repo.prototype.update = function(path, childrenToMerge, onComplete) {
-  this.log_("update", {path:path.toString(), value:childrenToMerge});
-  var empty = true;
-  var serverValues = this.generateServerValues();
-  var changedChildren = {};
-  goog.object.forEach(childrenToMerge, function(changedValue, changedKey) {
-    empty = false;
-    var newNodeUnresolved = fb.core.snap.NodeFromJSON(changedValue);
-    changedChildren[changedKey] = fb.core.util.ServerValues.resolveDeferredValueSnapshot(newNodeUnresolved, serverValues);
-  });
-  if (!empty) {
-    var writeId = this.getNextWriteId_();
-    var events = this.serverSyncTree_.applyUserMerge(path, changedChildren, writeId);
-    this.eventQueue_.queueEvents(events);
-    var self = this;
-    this.server_.merge(path.toString(), childrenToMerge, function(status, errorReason) {
-      var success = status === "ok";
-      if (!success) {
-        fb.core.util.warn("update at " + path + " failed: " + status);
-      }
-      var clearEvents = self.serverSyncTree_.ackUserWrite(writeId, !success);
-      var affectedPath = path;
-      if (clearEvents.length > 0) {
-        affectedPath = self.rerunTransactions_(path);
-      }
-      self.eventQueue_.raiseEventsForChangedPath(affectedPath, clearEvents);
-      self.callOnCompleteCallback(onComplete, status, errorReason);
-    });
-    var affectedPath = this.abortTransactions_(path);
-    this.rerunTransactions_(affectedPath);
-    this.eventQueue_.raiseEventsForChangedPath(path, []);
-  } else {
-    fb.core.util.log("update() called with empty data.  Don't do anything.");
-    this.callOnCompleteCallback(onComplete, "ok");
-  }
-};
-fb.core.Repo.prototype.runOnDisconnectEvents_ = function() {
-  this.log_("onDisconnectEvents");
-  var self = this;
-  var serverValues = this.generateServerValues();
-  var resolvedOnDisconnectTree = fb.core.util.ServerValues.resolveDeferredValueTree(this.onDisconnect_, serverValues);
-  var events = [];
-  resolvedOnDisconnectTree.forEachTree(fb.core.util.Path.Empty, function(path, snap) {
-    events = events.concat(self.serverSyncTree_.applyServerOverwrite(path, snap));
-    var affectedPath = self.abortTransactions_(path);
-    self.rerunTransactions_(affectedPath);
-  });
-  this.onDisconnect_ = new fb.core.SparseSnapshotTree;
-  this.eventQueue_.raiseEventsForChangedPath(fb.core.util.Path.Empty, events);
-};
-fb.core.Repo.prototype.onDisconnectCancel = function(path, onComplete) {
-  var self = this;
-  this.server_.onDisconnectCancel(path.toString(), function(status, errorReason) {
-    if (status === "ok") {
-      self.onDisconnect_.forget(path);
-    }
-    self.callOnCompleteCallback(onComplete, status, errorReason);
-  });
-};
-fb.core.Repo.prototype.onDisconnectSet = function(path, value, onComplete) {
-  var self = this;
-  var newNode = fb.core.snap.NodeFromJSON(value);
-  this.server_.onDisconnectPut(path.toString(), newNode.val(true), function(status, errorReason) {
-    if (status === "ok") {
-      self.onDisconnect_.remember(path, newNode);
-    }
-    self.callOnCompleteCallback(onComplete, status, errorReason);
-  });
-};
-fb.core.Repo.prototype.onDisconnectSetWithPriority = function(path, value, priority, onComplete) {
-  var self = this;
-  var newNode = fb.core.snap.NodeFromJSON(value, priority);
-  this.server_.onDisconnectPut(path.toString(), newNode.val(true), function(status, errorReason) {
-    if (status === "ok") {
-      self.onDisconnect_.remember(path, newNode);
-    }
-    self.callOnCompleteCallback(onComplete, status, errorReason);
-  });
-};
-fb.core.Repo.prototype.onDisconnectUpdate = function(path, childrenToMerge, onComplete) {
-  var empty = true;
-  for (var childName in childrenToMerge) {
-    empty = false;
-  }
-  if (empty) {
-    fb.core.util.log("onDisconnect().update() called with empty data.  Don't do anything.");
-    this.callOnCompleteCallback(onComplete, "ok");
-    return;
-  }
-  var self = this;
-  this.server_.onDisconnectMerge(path.toString(), childrenToMerge, function(status, errorReason) {
-    if (status === "ok") {
-      for (var childName in childrenToMerge) {
-        var newChildNode = fb.core.snap.NodeFromJSON(childrenToMerge[childName]);
-        self.onDisconnect_.remember(path.child(childName), newChildNode);
-      }
-    }
-    self.callOnCompleteCallback(onComplete, status, errorReason);
-  });
-};
-fb.core.Repo.prototype.addEventCallbackForQuery = function(query, eventRegistration) {
-  var events;
-  if (query.path.getFront() === ".info") {
-    events = this.infoSyncTree_.addEventRegistration(query, eventRegistration);
-  } else {
-    events = this.serverSyncTree_.addEventRegistration(query, eventRegistration);
-  }
-  this.eventQueue_.raiseEventsAtPath(query.path, events);
-};
-fb.core.Repo.prototype.removeEventCallbackForQuery = function(query, eventRegistration) {
-  var events;
-  if (query.path.getFront() === ".info") {
-    events = this.infoSyncTree_.removeEventRegistration(query, eventRegistration);
-  } else {
-    events = this.serverSyncTree_.removeEventRegistration(query, eventRegistration);
-  }
-  this.eventQueue_.raiseEventsAtPath(query.path, events);
-};
-fb.core.Repo.prototype.interrupt = function() {
-  if (this.persistentConnection_) {
-    this.persistentConnection_.interrupt();
-  }
-};
-fb.core.Repo.prototype.resume = function() {
-  if (this.persistentConnection_) {
-    this.persistentConnection_.resume();
-  }
-};
-fb.core.Repo.prototype.stats = function(showDelta) {
-  if (typeof console === "undefined") {
-    return;
-  }
-  var stats;
-  if (showDelta) {
-    if (!this.statsListener_) {
-      this.statsListener_ = new fb.core.stats.StatsListener(this.stats_);
-    }
-    stats = this.statsListener_.get();
-  } else {
-    stats = this.stats_.get();
-  }
-  var longestName = goog.array.reduce(goog.object.getKeys(stats), function(previousValue, currentValue, index, array) {
-    return Math.max(currentValue.length, previousValue);
-  }, 0);
-  for (var stat in stats) {
-    var value = stats[stat];
-    for (var i = stat.length;i < longestName + 2;i++) {
-      stat += " ";
-    }
-    console.log(stat + value);
-  }
-};
-fb.core.Repo.prototype.statsIncrementCounter = function(metric) {
-  this.stats_.incrementCounter(metric);
-  this.statsReporter_.includeStat(metric);
-};
-fb.core.Repo.prototype.log_ = function(var_args) {
-  var prefix = "";
-  if (this.persistentConnection_) {
-    prefix = this.persistentConnection_.id + ":";
-  }
-  fb.core.util.log(prefix, arguments);
-};
-fb.core.Repo.prototype.callOnCompleteCallback = function(callback, status, errorReason) {
-  if (callback) {
-    fb.core.util.exceptionGuard(function() {
-      if (status == "ok") {
-        callback(null);
-      } else {
-        var code = (status || "error").toUpperCase();
-        var message = code;
-        if (errorReason) {
-          message += ": " + errorReason;
-        }
-        var error = new Error(message);
-        error.code = code;
-        callback(error);
-      }
-    });
-  }
-};
-goog.provide("fb.core.Repo_transaction");
-goog.require("fb.core.Repo");
-goog.require("fb.core.snap.PriorityIndex");
-goog.require("fb.core.util");
-fb.core.TransactionStatus = {RUN:1, SENT:2, COMPLETED:3, SENT_NEEDS_ABORT:4, NEEDS_ABORT:5};
-fb.core.Repo.MAX_TRANSACTION_RETRIES_ = 25;
-fb.core.Transaction;
-fb.core.Repo.prototype.transactions_init_ = function() {
-  this.transactionQueueTree_ = new fb.core.util.Tree;
-};
-fb.core.Repo.prototype.startTransaction = function(path, transactionUpdate, onComplete, applyLocally) {
-  this.log_("transaction on " + path);
-  var valueCallback = function() {
-  };
-  var watchRef = new Firebase(this, path);
-  watchRef.on("value", valueCallback);
-  var unwatcher = function() {
-    watchRef.off("value", valueCallback);
-  };
-  var transaction = ({path:path, update:transactionUpdate, onComplete:onComplete, status:null, order:fb.core.util.LUIDGenerator(), applyLocally:applyLocally, retryCount:0, unwatcher:unwatcher, abortReason:null, currentWriteId:null, currentInputSnapshot:null, currentOutputSnapshotRaw:null, currentOutputSnapshotResolved:null});
-  var currentState = this.getLatestState_(path);
-  transaction.currentInputSnapshot = currentState;
-  var newVal = transaction.update(currentState.val());
-  if (!goog.isDef(newVal)) {
-    transaction.unwatcher();
-    transaction.currentOutputSnapshotRaw = null;
-    transaction.currentOutputSnapshotResolved = null;
-    if (transaction.onComplete) {
-      var snapshot = new fb.api.DataSnapshot((transaction.currentInputSnapshot), new Firebase(this, transaction.path), fb.core.snap.PriorityIndex);
-      transaction.onComplete(null, false, snapshot);
-    }
-  } else {
-    fb.core.util.validation.validateFirebaseData("transaction failed: Data returned ", newVal, transaction.path);
-    transaction.status = fb.core.TransactionStatus.RUN;
-    var queueNode = this.transactionQueueTree_.subTree(path);
-    var nodeQueue = queueNode.getValue() || [];
-    nodeQueue.push(transaction);
-    queueNode.setValue(nodeQueue);
-    var priorityForNode;
-    if (typeof newVal === "object" && newVal !== null && fb.util.obj.contains(newVal, ".priority")) {
-      priorityForNode = fb.util.obj.get(newVal, ".priority");
-      fb.core.util.assert(fb.core.util.validation.isValidPriority(priorityForNode), "Invalid priority returned by transaction. " + "Priority must be a valid string, finite number, server value, or null.");
-    } else {
-      var currentNode = this.serverSyncTree_.calcCompleteEventCache(path) || fb.core.snap.EMPTY_NODE;
-      priorityForNode = currentNode.getPriority().val();
-    }
-    priorityForNode = (priorityForNode);
-    var serverValues = this.generateServerValues();
-    var newNodeUnresolved = fb.core.snap.NodeFromJSON(newVal, priorityForNode);
-    var newNode = fb.core.util.ServerValues.resolveDeferredValueSnapshot(newNodeUnresolved, serverValues);
-    transaction.currentOutputSnapshotRaw = newNodeUnresolved;
-    transaction.currentOutputSnapshotResolved = newNode;
-    transaction.currentWriteId = this.getNextWriteId_();
-    var events = this.serverSyncTree_.applyUserOverwrite(path, newNode, transaction.currentWriteId, transaction.applyLocally);
-    this.eventQueue_.raiseEventsForChangedPath(path, events);
-    this.sendReadyTransactions_();
-  }
-};
-fb.core.Repo.prototype.getLatestState_ = function(path, excludeSets) {
-  return this.serverSyncTree_.calcCompleteEventCache(path, excludeSets) || fb.core.snap.EMPTY_NODE;
-};
-fb.core.Repo.prototype.sendReadyTransactions_ = function(opt_node) {
-  var node = (opt_node || this.transactionQueueTree_);
-  if (!opt_node) {
-    this.pruneCompletedTransactionsBelowNode_(node);
-  }
-  if (node.getValue() !== null) {
-    var queue = this.buildTransactionQueue_(node);
-    fb.core.util.assert(queue.length > 0, "Sending zero length transaction queue");
-    var allRun = goog.array.every(queue, function(transaction) {
-      return transaction.status === fb.core.TransactionStatus.RUN;
-    });
-    if (allRun) {
-      this.sendTransactionQueue_(node.path(), queue);
-    }
-  } else {
-    if (node.hasChildren()) {
-      var self = this;
-      node.forEachChild(function(childNode) {
-        self.sendReadyTransactions_(childNode);
-      });
-    }
-  }
-};
-fb.core.Repo.prototype.sendTransactionQueue_ = function(path, queue) {
-  var setsToIgnore = goog.array.map(queue, function(txn) {
-    return txn.currentWriteId;
-  });
-  var latestState = this.getLatestState_(path, setsToIgnore);
-  var snapToSend = latestState;
-  var latestHash = latestState.hash();
-  for (var i = 0;i < queue.length;i++) {
-    var txn = queue[i];
-    fb.core.util.assert(txn.status === fb.core.TransactionStatus.RUN, "tryToSendTransactionQueue_: items in queue should all be run.");
-    txn.status = fb.core.TransactionStatus.SENT;
-    txn.retryCount++;
-    var relativePath = fb.core.util.Path.relativePath(path, txn.path);
-    snapToSend = snapToSend.updateChild(relativePath, (txn.currentOutputSnapshotRaw));
-  }
-  var dataToSend = snapToSend.val(true);
-  var pathToSend = path;
-  var self = this;
-  this.server_.put(pathToSend.toString(), dataToSend, function(status) {
-    self.log_("transaction put response", {path:pathToSend.toString(), status:status});
-    var events = [];
-    if (status === "ok") {
-      var callbacks = [];
-      for (i = 0;i < queue.length;i++) {
-        queue[i].status = fb.core.TransactionStatus.COMPLETED;
-        events = events.concat(self.serverSyncTree_.ackUserWrite(queue[i].currentWriteId));
-        if (queue[i].onComplete) {
-          var node = (queue[i].currentOutputSnapshotResolved);
-          var ref = new Firebase(self, queue[i].path);
-          var snapshot = new fb.api.DataSnapshot(node, ref, fb.core.snap.PriorityIndex);
-          callbacks.push(goog.bind(queue[i].onComplete, null, null, true, snapshot));
-        }
-        queue[i].unwatcher();
-      }
-      self.pruneCompletedTransactionsBelowNode_(self.transactionQueueTree_.subTree(path));
-      self.sendReadyTransactions_();
-      self.eventQueue_.raiseEventsForChangedPath(path, events);
-      for (i = 0;i < callbacks.length;i++) {
-        fb.core.util.exceptionGuard(callbacks[i]);
-      }
-    } else {
-      if (status === "datastale") {
-        for (i = 0;i < queue.length;i++) {
-          if (queue[i].status === fb.core.TransactionStatus.SENT_NEEDS_ABORT) {
-            queue[i].status = fb.core.TransactionStatus.NEEDS_ABORT;
-          } else {
-            queue[i].status = fb.core.TransactionStatus.RUN;
-          }
-        }
-      } else {
-        fb.core.util.warn("transaction at " + pathToSend.toString() + " failed: " + status);
-        for (i = 0;i < queue.length;i++) {
-          queue[i].status = fb.core.TransactionStatus.NEEDS_ABORT;
-          queue[i].abortReason = status;
-        }
-      }
-      self.rerunTransactions_(path);
-    }
-  }, latestHash);
-};
-fb.core.Repo.prototype.rerunTransactions_ = function(changedPath) {
-  var rootMostTransactionNode = this.getAncestorTransactionNode_(changedPath);
-  var path = rootMostTransactionNode.path();
-  var queue = this.buildTransactionQueue_(rootMostTransactionNode);
-  this.rerunTransactionQueue_(queue, path);
-  return path;
-};
-fb.core.Repo.prototype.rerunTransactionQueue_ = function(queue, path) {
-  if (queue.length === 0) {
-    return;
-  }
-  var callbacks = [];
-  var events = [];
-  var setsToIgnore = goog.array.map(queue, function(q) {
-    return q.currentWriteId;
-  });
-  for (var i = 0;i < queue.length;i++) {
-    var transaction = queue[i];
-    var relativePath = fb.core.util.Path.relativePath(path, transaction.path);
-    var abortTransaction = false, abortReason;
-    fb.core.util.assert(relativePath !== null, "rerunTransactionsUnderNode_: relativePath should not be null.");
-    if (transaction.status === fb.core.TransactionStatus.NEEDS_ABORT) {
-      abortTransaction = true;
-      abortReason = transaction.abortReason;
-      events = events.concat(this.serverSyncTree_.ackUserWrite(transaction.currentWriteId, true));
-    } else {
-      if (transaction.status === fb.core.TransactionStatus.RUN) {
-        if (transaction.retryCount >= fb.core.Repo.MAX_TRANSACTION_RETRIES_) {
-          abortTransaction = true;
-          abortReason = "maxretry";
-          events = events.concat(this.serverSyncTree_.ackUserWrite(transaction.currentWriteId, true));
-        } else {
-          var currentNode = this.getLatestState_(transaction.path, setsToIgnore);
-          transaction.currentInputSnapshot = currentNode;
-          var newData = queue[i].update(currentNode.val());
-          if (goog.isDef(newData)) {
-            fb.core.util.validation.validateFirebaseData("transaction failed: Data returned ", newData, transaction.path);
-            var newDataNode = fb.core.snap.NodeFromJSON(newData);
-            var hasExplicitPriority = typeof newData === "object" && newData != null && fb.util.obj.contains(newData, ".priority");
-            if (!hasExplicitPriority) {
-              newDataNode = newDataNode.updatePriority(currentNode.getPriority());
-            }
-            var oldWriteId = transaction.currentWriteId;
-            var serverValues = this.generateServerValues();
-            var newNodeResolved = fb.core.util.ServerValues.resolveDeferredValueSnapshot(newDataNode, serverValues);
-            transaction.currentOutputSnapshotRaw = newDataNode;
-            transaction.currentOutputSnapshotResolved = newNodeResolved;
-            transaction.currentWriteId = this.getNextWriteId_();
-            goog.array.remove(setsToIgnore, oldWriteId);
-            events = events.concat(this.serverSyncTree_.applyUserOverwrite(transaction.path, newNodeResolved, transaction.currentWriteId, transaction.applyLocally));
-            events = events.concat(this.serverSyncTree_.ackUserWrite(oldWriteId, true));
-          } else {
-            abortTransaction = true;
-            abortReason = "nodata";
-            events = events.concat(this.serverSyncTree_.ackUserWrite(transaction.currentWriteId, true));
-          }
-        }
-      }
-    }
-    this.eventQueue_.raiseEventsForChangedPath(path, events);
-    events = [];
-    if (abortTransaction) {
-      queue[i].status = fb.core.TransactionStatus.COMPLETED;
-      (function(unwatcher) {
-        setTimeout(unwatcher, Math.floor(0));
-      })(queue[i].unwatcher);
-      if (queue[i].onComplete) {
-        if (abortReason === "nodata") {
-          var ref = new Firebase(this, queue[i].path);
-          var lastInput = (queue[i].currentInputSnapshot);
-          var snapshot = new fb.api.DataSnapshot(lastInput, ref, fb.core.snap.PriorityIndex);
-          callbacks.push(goog.bind(queue[i].onComplete, null, null, false, snapshot));
-        } else {
-          callbacks.push(goog.bind(queue[i].onComplete, null, new Error(abortReason), false, null));
-        }
-      }
-    }
-  }
-  this.pruneCompletedTransactionsBelowNode_(this.transactionQueueTree_);
-  for (i = 0;i < callbacks.length;i++) {
-    fb.core.util.exceptionGuard(callbacks[i]);
-  }
-  this.sendReadyTransactions_();
-};
-fb.core.Repo.prototype.getAncestorTransactionNode_ = function(path) {
-  var front;
-  var transactionNode = this.transactionQueueTree_;
-  while ((front = path.getFront()) !== null && transactionNode.getValue() === null) {
-    transactionNode = transactionNode.subTree(front);
-    path = path.popFront();
-  }
-  return transactionNode;
-};
-fb.core.Repo.prototype.buildTransactionQueue_ = function(transactionNode) {
-  var transactionQueue = [];
-  this.aggregateTransactionQueuesForNode_(transactionNode, transactionQueue);
-  transactionQueue.sort(function(a, b) {
-    return a.order - b.order;
-  });
-  return transactionQueue;
-};
-fb.core.Repo.prototype.aggregateTransactionQueuesForNode_ = function(node, queue) {
-  var nodeQueue = node.getValue();
-  if (nodeQueue !== null) {
-    for (var i = 0;i < nodeQueue.length;i++) {
-      queue.push(nodeQueue[i]);
-    }
-  }
-  var self = this;
-  node.forEachChild(function(child) {
-    self.aggregateTransactionQueuesForNode_(child, queue);
-  });
-};
-fb.core.Repo.prototype.pruneCompletedTransactionsBelowNode_ = function(node) {
-  var queue = node.getValue();
-  if (queue) {
-    var to = 0;
-    for (var from = 0;from < queue.length;from++) {
-      if (queue[from].status !== fb.core.TransactionStatus.COMPLETED) {
-        queue[to] = queue[from];
-        to++;
-      }
-    }
-    queue.length = to;
-    node.setValue(queue.length > 0 ? queue : null);
-  }
-  var self = this;
-  node.forEachChild(function(childNode) {
-    self.pruneCompletedTransactionsBelowNode_(childNode);
-  });
-};
-fb.core.Repo.prototype.abortTransactions_ = function(path) {
-  var affectedPath = this.getAncestorTransactionNode_(path).path();
-  var transactionNode = this.transactionQueueTree_.subTree(path);
-  var self = this;
-  transactionNode.forEachAncestor(function(node) {
-    self.abortTransactionsOnNode_(node);
-  });
-  this.abortTransactionsOnNode_(transactionNode);
-  transactionNode.forEachDescendant(function(node) {
-    self.abortTransactionsOnNode_(node);
-  });
-  return affectedPath;
-};
-fb.core.Repo.prototype.abortTransactionsOnNode_ = function(node) {
-  var queue = node.getValue();
-  if (queue !== null) {
-    var callbacks = [];
-    var events = [];
-    var lastSent = -1;
-    for (var i = 0;i < queue.length;i++) {
-      if (queue[i].status === fb.core.TransactionStatus.SENT_NEEDS_ABORT) {
-      } else {
-        if (queue[i].status === fb.core.TransactionStatus.SENT) {
-          fb.core.util.assert(lastSent === i - 1, "All SENT items should be at beginning of queue.");
-          lastSent = i;
-          queue[i].status = fb.core.TransactionStatus.SENT_NEEDS_ABORT;
-          queue[i].abortReason = "set";
-        } else {
-          fb.core.util.assert(queue[i].status === fb.core.TransactionStatus.RUN, "Unexpected transaction status in abort");
-          queue[i].unwatcher();
-          events = events.concat(this.serverSyncTree_.ackUserWrite(queue[i].currentWriteId, true));
-          if (queue[i].onComplete) {
-            var snapshot = null;
-            callbacks.push(goog.bind(queue[i].onComplete, null, new Error("set"), false, snapshot));
-          }
-        }
-      }
-    }
-    if (lastSent === -1) {
-      node.setValue(null);
-    } else {
-      queue.length = lastSent + 1;
-    }
-    this.eventQueue_.raiseEventsForChangedPath(node.path(), events);
-    for (i = 0;i < callbacks.length;i++) {
-      fb.core.util.exceptionGuard(callbacks[i]);
-    }
-  }
-};
-goog.provide("fb.core.RepoManager");
-goog.require("fb.core.Repo");
-goog.require("fb.core.Repo_transaction");
-goog.require("fb.util.obj");
-fb.core.RepoManager = function() {
-  this.repos_ = {};
-  this.useRestClient_ = false;
-};
-goog.addSingletonGetter(fb.core.RepoManager);
-fb.core.RepoManager.prototype.interrupt = function() {
-  for (var repo in this.repos_) {
-    this.repos_[repo].interrupt();
-  }
-};
-goog.exportProperty(fb.core.RepoManager.prototype, "interrupt", fb.core.RepoManager.prototype.interrupt);
-fb.core.RepoManager.prototype.resume = function() {
-  for (var repo in this.repos_) {
-    this.repos_[repo].resume();
-  }
-};
-goog.exportProperty(fb.core.RepoManager.prototype, "resume", fb.core.RepoManager.prototype.resume);
-fb.core.RepoManager.prototype.getRepo = function(repoInfo) {
-  var repoHashString = repoInfo.toString();
-  var repo = fb.util.obj.get(this.repos_, repoHashString);
-  if (!repo) {
-    repo = new fb.core.Repo(repoInfo, this.useRestClient_);
-    this.repos_[repoHashString] = repo;
-  }
-  return repo;
-};
-fb.core.RepoManager.prototype.forceRestClient = function() {
-  this.useRestClient_ = true;
-};
-goog.provide("fb.api.OnDisconnect");
-goog.require("fb.constants");
-goog.require("fb.core.Repo");
-goog.require("fb.core.util.validation");
-goog.require("fb.util.validation");
-fb.api.OnDisconnect = function(repo, path) {
-  this.repo_ = repo;
-  this.path_ = path;
-};
-fb.api.OnDisconnect.prototype.cancel = function(opt_onComplete) {
-  fb.util.validation.validateArgCount("Firebase.onDisconnect().cancel", 0, 1, arguments.length);
-  fb.util.validation.validateCallback("Firebase.onDisconnect().cancel", 1, opt_onComplete, true);
-  this.repo_.onDisconnectCancel(this.path_, opt_onComplete || null);
-};
-goog.exportProperty(fb.api.OnDisconnect.prototype, "cancel", fb.api.OnDisconnect.prototype.cancel);
-fb.api.OnDisconnect.prototype.remove = function(opt_onComplete) {
-  fb.util.validation.validateArgCount("Firebase.onDisconnect().remove", 0, 1, arguments.length);
-  fb.core.util.validation.validateWritablePath("Firebase.onDisconnect().remove", this.path_);
-  fb.util.validation.validateCallback("Firebase.onDisconnect().remove", 1, opt_onComplete, true);
-  this.repo_.onDisconnectSet(this.path_, null, opt_onComplete);
-};
-goog.exportProperty(fb.api.OnDisconnect.prototype, "remove", fb.api.OnDisconnect.prototype.remove);
-fb.api.OnDisconnect.prototype.set = function(value, opt_onComplete) {
-  fb.util.validation.validateArgCount("Firebase.onDisconnect().set", 1, 2, arguments.length);
-  fb.core.util.validation.validateWritablePath("Firebase.onDisconnect().set", this.path_);
-  fb.core.util.validation.validateFirebaseDataArg("Firebase.onDisconnect().set", 1, value, this.path_, false);
-  fb.util.validation.validateCallback("Firebase.onDisconnect().set", 2, opt_onComplete, true);
-  this.repo_.onDisconnectSet(this.path_, value, opt_onComplete);
-};
-goog.exportProperty(fb.api.OnDisconnect.prototype, "set", fb.api.OnDisconnect.prototype.set);
-fb.api.OnDisconnect.prototype.setWithPriority = function(value, priority, opt_onComplete) {
-  fb.util.validation.validateArgCount("Firebase.onDisconnect().setWithPriority", 2, 3, arguments.length);
-  fb.core.util.validation.validateWritablePath("Firebase.onDisconnect().setWithPriority", this.path_);
-  fb.core.util.validation.validateFirebaseDataArg("Firebase.onDisconnect().setWithPriority", 1, value, this.path_, false);
-  fb.core.util.validation.validatePriority("Firebase.onDisconnect().setWithPriority", 2, priority, false);
-  fb.util.validation.validateCallback("Firebase.onDisconnect().setWithPriority", 3, opt_onComplete, true);
-  this.repo_.onDisconnectSetWithPriority(this.path_, value, priority, opt_onComplete);
-};
-goog.exportProperty(fb.api.OnDisconnect.prototype, "setWithPriority", fb.api.OnDisconnect.prototype.setWithPriority);
-fb.api.OnDisconnect.prototype.update = function(objectToMerge, opt_onComplete) {
-  fb.util.validation.validateArgCount("Firebase.onDisconnect().update", 1, 2, arguments.length);
-  fb.core.util.validation.validateWritablePath("Firebase.onDisconnect().update", this.path_);
-  if (goog.isArray(objectToMerge)) {
-    var newObjectToMerge = {};
-    for (var i = 0;i < objectToMerge.length;++i) {
-      newObjectToMerge["" + i] = objectToMerge[i];
-    }
-    objectToMerge = newObjectToMerge;
-    fb.core.util.warn("Passing an Array to Firebase.onDisconnect().update() is deprecated. Use set() if you want to overwrite the " + "existing data, or an Object with integer keys if you really do want to only update some of the children.");
-  }
-  fb.core.util.validation.validateFirebaseMergeDataArg("Firebase.onDisconnect().update", 1, objectToMerge, this.path_, false);
-  fb.util.validation.validateCallback("Firebase.onDisconnect().update", 2, opt_onComplete, true);
-  this.repo_.onDisconnectUpdate(this.path_, objectToMerge, opt_onComplete);
-};
-goog.exportProperty(fb.api.OnDisconnect.prototype, "update", fb.api.OnDisconnect.prototype.update);
-goog.provide("fb.api.Query");
-goog.require("fb.api.DataSnapshot");
-goog.require("fb.core.snap");
-goog.require("fb.core.util");
-goog.require("fb.core.util.validation");
-goog.require("fb.core.view.EventRegistration");
-goog.require("fb.core.view.QueryParams");
-goog.require("fb.util.json");
-goog.require("fb.util.validation");
-fb.api.Query = function(repo, path, queryParams, orderByCalled) {
-  this.repo = repo;
-  this.path = path;
-  this.queryParams_ = queryParams;
-  this.orderByCalled_ = orderByCalled;
-};
-fb.api.Query.prototype.validateQueryEndpoints_ = function(params) {
-  var startNode = null;
-  var endNode = null;
-  if (params.hasStart()) {
-    startNode = params.getIndexStartValue();
-  }
-  if (params.hasEnd()) {
-    endNode = params.getIndexEndValue();
-  }
-  if (params.getIndex() === fb.core.snap.KeyIndex) {
-    var tooManyArgsError = "Query: When ordering by key, you may only pass one argument to " + "startAt(), endAt(), or equalTo().";
-    var wrongArgTypeError = "Query: When ordering by key, the argument passed to startAt(), endAt()," + "or equalTo() must be a string.";
-    if (params.hasStart()) {
-      var startName = params.getIndexStartName();
-      if (startName != fb.core.util.MIN_NAME) {
-        throw new Error(tooManyArgsError);
-      } else {
-        if (typeof startNode !== "string") {
-          throw new Error(wrongArgTypeError);
-        }
-      }
-    }
-    if (params.hasEnd()) {
-      var endName = params.getIndexEndName();
-      if (endName != fb.core.util.MAX_NAME) {
-        throw new Error(tooManyArgsError);
-      } else {
-        if (typeof endNode !== "string") {
-          throw new Error(wrongArgTypeError);
-        }
-      }
-    }
-  } else {
-    if (params.getIndex() === fb.core.snap.PriorityIndex) {
-      if (startNode != null && !fb.core.util.validation.isValidPriority(startNode) || endNode != null && !fb.core.util.validation.isValidPriority(endNode)) {
-        throw new Error("Query: When ordering by priority, the first argument passed to startAt(), " + "endAt(), or equalTo() must be a valid priority value (null, a number, or a string).");
-      }
-    } else {
-      fb.core.util.assert(params.getIndex() instanceof fb.core.snap.SubKeyIndex || params.getIndex() === fb.core.snap.ValueIndex, "unknown index type.");
-      if (startNode != null && typeof startNode === "object" || endNode != null && typeof endNode === "object") {
-        throw new Error("Query: First argument passed to startAt(), endAt(), or equalTo() cannot be " + "an object.");
-      }
-    }
-  }
-};
-fb.api.Query.prototype.validateLimit_ = function(params) {
-  if (params.hasStart() && params.hasEnd() && params.hasLimit() && !params.hasAnchoredLimit()) {
-    throw new Error("Query: Can't combine startAt(), endAt(), and limit(). Use limitToFirst() or limitToLast() instead.");
-  }
-};
-fb.api.Query.prototype.validateNoPreviousOrderByCall_ = function(fnName) {
-  if (this.orderByCalled_ === true) {
-    throw new Error(fnName + ": You can't combine multiple orderBy calls.");
-  }
-};
-fb.api.Query.prototype.getQueryParams = function() {
-  return this.queryParams_;
-};
-fb.api.Query.prototype.ref = function() {
-  fb.util.validation.validateArgCount("Query.ref", 0, 0, arguments.length);
-  return new Firebase(this.repo, this.path);
-};
-goog.exportProperty(fb.api.Query.prototype, "ref", fb.api.Query.prototype.ref);
-fb.api.Query.prototype.on = function(eventType, callback, cancelCallbackOrContext, context) {
-  fb.util.validation.validateArgCount("Query.on", 2, 4, arguments.length);
-  fb.core.util.validation.validateEventType("Query.on", 1, eventType, false);
-  fb.util.validation.validateCallback("Query.on", 2, callback, false);
-  var ret = this.getCancelAndContextArgs_("Query.on", cancelCallbackOrContext, context);
-  if (eventType === "value") {
-    this.onValueEvent(callback, ret.cancel, ret.context);
-  } else {
-    var callbacks = {};
-    callbacks[eventType] = callback;
-    this.onChildEvent(callbacks, ret.cancel, ret.context);
-  }
-  return callback;
-};
-goog.exportProperty(fb.api.Query.prototype, "on", fb.api.Query.prototype.on);
-fb.api.Query.prototype.onValueEvent = function(callback, cancelCallback, context) {
-  var container = new fb.core.view.ValueEventRegistration(callback, cancelCallback || null, context || null);
-  this.repo.addEventCallbackForQuery(this, container);
-};
-fb.api.Query.prototype.onChildEvent = function(callbacks, cancelCallback, context) {
-  var container = new fb.core.view.ChildEventRegistration(callbacks, cancelCallback, context);
-  this.repo.addEventCallbackForQuery(this, container);
-};
-fb.api.Query.prototype.off = function(eventType, callback, opt_context) {
-  fb.util.validation.validateArgCount("Query.off", 0, 3, arguments.length);
-  fb.core.util.validation.validateEventType("Query.off", 1, eventType, true);
-  fb.util.validation.validateCallback("Query.off", 2, callback, true);
-  fb.util.validation.validateContextObject("Query.off", 3, opt_context, true);
-  var container = null;
-  var callbacks = null;
-  if (eventType === "value") {
-    var valueCallback = (callback) || null;
-    container = new fb.core.view.ValueEventRegistration(valueCallback, null, opt_context || null);
-  } else {
-    if (eventType) {
-      if (callback) {
-        callbacks = {};
-        callbacks[eventType] = callback;
-      }
-      container = new fb.core.view.ChildEventRegistration(callbacks, null, opt_context || null);
-    }
-  }
-  this.repo.removeEventCallbackForQuery(this, container);
-};
-goog.exportProperty(fb.api.Query.prototype, "off", fb.api.Query.prototype.off);
-fb.api.Query.prototype.once = function(eventType, userCallback) {
-  fb.util.validation.validateArgCount("Query.once", 2, 4, arguments.length);
-  fb.core.util.validation.validateEventType("Query.once", 1, eventType, false);
-  fb.util.validation.validateCallback("Query.once", 2, userCallback, false);
-  var ret = this.getCancelAndContextArgs_("Query.once", arguments[2], arguments[3]);
-  var self = this, firstCall = true;
-  var onceCallback = function(snapshot) {
-    if (firstCall) {
-      firstCall = false;
-      self.off(eventType, onceCallback);
-      goog.bind(userCallback, ret.context)(snapshot);
-    }
-  };
-  this.on(eventType, onceCallback, function(err) {
-    self.off(eventType, onceCallback);
-    if (ret.cancel) {
-      goog.bind(ret.cancel, ret.context)(err);
-    }
-  });
-};
-goog.exportProperty(fb.api.Query.prototype, "once", fb.api.Query.prototype.once);
-fb.api.Query.prototype.limit = function(limit) {
-  fb.core.util.warn("Query.limit() being deprecated. " + "Please use Query.limitToFirst() or Query.limitToLast() instead.");
-  fb.util.validation.validateArgCount("Query.limit", 1, 1, arguments.length);
-  if (!goog.isNumber(limit) || Math.floor(limit) !== limit || limit <= 0) {
-    throw new Error("Query.limit: First argument must be a positive integer.");
-  }
-  if (this.queryParams_.hasLimit()) {
-    throw new Error("Query.limit: Limit was already set (by another call to limit, limitToFirst, or" + "limitToLast.");
-  }
-  var newParams = this.queryParams_.limit(limit);
-  this.validateLimit_(newParams);
-  return new fb.api.Query(this.repo, this.path, newParams, this.orderByCalled_);
-};
-goog.exportProperty(fb.api.Query.prototype, "limit", fb.api.Query.prototype.limit);
-fb.api.Query.prototype.limitToFirst = function(limit) {
-  fb.util.validation.validateArgCount("Query.limitToFirst", 1, 1, arguments.length);
-  if (!goog.isNumber(limit) || Math.floor(limit) !== limit || limit <= 0) {
-    throw new Error("Query.limitToFirst: First argument must be a positive integer.");
-  }
-  if (this.queryParams_.hasLimit()) {
-    throw new Error("Query.limitToFirst: Limit was already set (by another call to limit, " + "limitToFirst, or limitToLast).");
-  }
-  return new fb.api.Query(this.repo, this.path, this.queryParams_.limitToFirst(limit), this.orderByCalled_);
-};
-goog.exportProperty(fb.api.Query.prototype, "limitToFirst", fb.api.Query.prototype.limitToFirst);
-fb.api.Query.prototype.limitToLast = function(limit) {
-  fb.util.validation.validateArgCount("Query.limitToLast", 1, 1, arguments.length);
-  if (!goog.isNumber(limit) || Math.floor(limit) !== limit || limit <= 0) {
-    throw new Error("Query.limitToLast: First argument must be a positive integer.");
-  }
-  if (this.queryParams_.hasLimit()) {
-    throw new Error("Query.limitToLast: Limit was already set (by another call to limit, " + "limitToFirst, or limitToLast).");
-  }
-  return new fb.api.Query(this.repo, this.path, this.queryParams_.limitToLast(limit), this.orderByCalled_);
-};
-goog.exportProperty(fb.api.Query.prototype, "limitToLast", fb.api.Query.prototype.limitToLast);
-fb.api.Query.prototype.orderByChild = function(key) {
-  fb.util.validation.validateArgCount("Query.orderByChild", 1, 1, arguments.length);
-  if (key === "$key") {
-    throw new Error('Query.orderByChild: "$key" is invalid.  Use Query.orderByKey() instead.');
-  } else {
-    if (key === "$priority") {
-      throw new Error('Query.orderByChild: "$priority" is invalid.  Use Query.orderByPriority() instead.');
-    } else {
-      if (key === "$value") {
-        throw new Error('Query.orderByChild: "$value" is invalid.  Use Query.orderByValue() instead.');
-      }
-    }
-  }
-  fb.core.util.validation.validateKey("Query.orderByChild", 1, key, false);
-  this.validateNoPreviousOrderByCall_("Query.orderByChild");
-  var index = new fb.core.snap.SubKeyIndex(key);
-  var newParams = this.queryParams_.orderBy(index);
-  this.validateQueryEndpoints_(newParams);
-  return new fb.api.Query(this.repo, this.path, newParams, true);
-};
-goog.exportProperty(fb.api.Query.prototype, "orderByChild", fb.api.Query.prototype.orderByChild);
-fb.api.Query.prototype.orderByKey = function() {
-  fb.util.validation.validateArgCount("Query.orderByKey", 0, 0, arguments.length);
-  this.validateNoPreviousOrderByCall_("Query.orderByKey");
-  var newParams = this.queryParams_.orderBy(fb.core.snap.KeyIndex);
-  this.validateQueryEndpoints_(newParams);
-  return new fb.api.Query(this.repo, this.path, newParams, true);
-};
-goog.exportProperty(fb.api.Query.prototype, "orderByKey", fb.api.Query.prototype.orderByKey);
-fb.api.Query.prototype.orderByPriority = function() {
-  fb.util.validation.validateArgCount("Query.orderByPriority", 0, 0, arguments.length);
-  this.validateNoPreviousOrderByCall_("Query.orderByPriority");
-  var newParams = this.queryParams_.orderBy(fb.core.snap.PriorityIndex);
-  this.validateQueryEndpoints_(newParams);
-  return new fb.api.Query(this.repo, this.path, newParams, true);
-};
-goog.exportProperty(fb.api.Query.prototype, "orderByPriority", fb.api.Query.prototype.orderByPriority);
-fb.api.Query.prototype.orderByValue = function() {
-  fb.util.validation.validateArgCount("Query.orderByValue", 0, 0, arguments.length);
-  this.validateNoPreviousOrderByCall_("Query.orderByValue");
-  var newParams = this.queryParams_.orderBy(fb.core.snap.ValueIndex);
-  this.validateQueryEndpoints_(newParams);
-  return new fb.api.Query(this.repo, this.path, newParams, true);
-};
-goog.exportProperty(fb.api.Query.prototype, "orderByValue", fb.api.Query.prototype.orderByValue);
-fb.api.Query.prototype.startAt = function(value, name) {
-  fb.util.validation.validateArgCount("Query.startAt", 0, 2, arguments.length);
-  fb.core.util.validation.validateFirebaseDataArg("Query.startAt", 1, value, this.path, true);
-  fb.core.util.validation.validateKey("Query.startAt", 2, name, true);
-  var newParams = this.queryParams_.startAt(value, name);
-  this.validateLimit_(newParams);
-  this.validateQueryEndpoints_(newParams);
-  if (this.queryParams_.hasStart()) {
-    throw new Error("Query.startAt: Starting point was already set (by another call to startAt " + "or equalTo).");
-  }
-  if (!goog.isDef(value)) {
-    value = null;
-    name = null;
-  }
-  return new fb.api.Query(this.repo, this.path, newParams, this.orderByCalled_);
-};
-goog.exportProperty(fb.api.Query.prototype, "startAt", fb.api.Query.prototype.startAt);
-fb.api.Query.prototype.endAt = function(value, name) {
-  fb.util.validation.validateArgCount("Query.endAt", 0, 2, arguments.length);
-  fb.core.util.validation.validateFirebaseDataArg("Query.endAt", 1, value, this.path, true);
-  fb.core.util.validation.validateKey("Query.endAt", 2, name, true);
-  var newParams = this.queryParams_.endAt(value, name);
-  this.validateLimit_(newParams);
-  this.validateQueryEndpoints_(newParams);
-  if (this.queryParams_.hasEnd()) {
-    throw new Error("Query.endAt: Ending point was already set (by another call to endAt or " + "equalTo).");
-  }
-  return new fb.api.Query(this.repo, this.path, newParams, this.orderByCalled_);
-};
-goog.exportProperty(fb.api.Query.prototype, "endAt", fb.api.Query.prototype.endAt);
-fb.api.Query.prototype.equalTo = function(value, name) {
-  fb.util.validation.validateArgCount("Query.equalTo", 1, 2, arguments.length);
-  fb.core.util.validation.validateFirebaseDataArg("Query.equalTo", 1, value, this.path, false);
-  fb.core.util.validation.validateKey("Query.equalTo", 2, name, true);
-  if (this.queryParams_.hasStart()) {
-    throw new Error("Query.equalTo: Starting point was already set (by another call to endAt or " + "equalTo).");
-  }
-  if (this.queryParams_.hasEnd()) {
-    throw new Error("Query.equalTo: Ending point was already set (by another call to endAt or " + "equalTo).");
-  }
-  return this.startAt(value, name).endAt(value, name);
-};
-goog.exportProperty(fb.api.Query.prototype, "equalTo", fb.api.Query.prototype.equalTo);
-fb.api.Query.prototype.toString = function() {
-  fb.util.validation.validateArgCount("Query.toString", 0, 0, arguments.length);
-  var url = this.repo.toString() + this.path.toUrlEncodedString();
-  var querystring = fb.util.querystring(this.queryParams_.toRestQueryStringParameters());
-  url += querystring.replace(/^&/, "");
-  return url;
-};
-goog.exportProperty(fb.api.Query.prototype, "toString", fb.api.Query.prototype.toString);
-fb.api.Query.prototype.queryObject = function() {
-  return this.queryParams_.getQueryObject();
-};
-fb.api.Query.prototype.queryIdentifier = function() {
-  var obj = this.queryObject();
-  var id = fb.core.util.ObjectToUniqueKey(obj);
-  return id === "{}" ? "default" : id;
-};
-fb.api.Query.prototype.getCancelAndContextArgs_ = function(fnName, cancelOrContext, context) {
-  var ret = {cancel:null, context:null};
-  if (cancelOrContext && context) {
-    ret.cancel = (cancelOrContext);
-    fb.util.validation.validateCallback(fnName, 3, ret.cancel, true);
-    ret.context = context;
-    fb.util.validation.validateContextObject(fnName, 4, ret.context, true);
-  } else {
-    if (cancelOrContext) {
-      if (typeof cancelOrContext === "object" && cancelOrContext !== null) {
-        ret.context = cancelOrContext;
-      } else {
-        if (typeof cancelOrContext === "function") {
-          ret.cancel = cancelOrContext;
-        } else {
-          throw new Error(fb.util.validation.errorPrefix(fnName, 3, true) + " must either be a cancel callback or a context object.");
-        }
-      }
-    }
-  }
-  return ret;
-};
-goog.provide("fb.api.TEST_ACCESS");
-goog.require("fb.core.PersistentConnection");
-fb.api.TEST_ACCESS.DataConnection = fb.core.PersistentConnection;
-goog.exportProperty(fb.api.TEST_ACCESS, "DataConnection", fb.api.TEST_ACCESS.DataConnection);
-fb.core.PersistentConnection.prototype.simpleListen = function(pathString, onComplete) {
-  this.sendRequest("q", {"p":pathString}, onComplete);
-};
-goog.exportProperty(fb.api.TEST_ACCESS.DataConnection.prototype, "simpleListen", fb.api.TEST_ACCESS.DataConnection.prototype.simpleListen);
-fb.core.PersistentConnection.prototype.echo = function(data, onEcho) {
-  this.sendRequest("echo", {"d":data}, onEcho);
-};
-goog.exportProperty(fb.api.TEST_ACCESS.DataConnection.prototype, "echo", fb.api.TEST_ACCESS.DataConnection.prototype.echo);
-goog.exportProperty(fb.core.PersistentConnection.prototype, "interrupt", fb.core.PersistentConnection.prototype.interrupt);
-fb.api.TEST_ACCESS.RealTimeConnection = fb.realtime.Connection;
-goog.exportProperty(fb.api.TEST_ACCESS, "RealTimeConnection", fb.api.TEST_ACCESS.RealTimeConnection);
-goog.exportProperty(fb.realtime.Connection.prototype, "sendRequest", fb.realtime.Connection.prototype.sendRequest);
-goog.exportProperty(fb.realtime.Connection.prototype, "close", fb.realtime.Connection.prototype.close);
-fb.api.TEST_ACCESS.hijackHash = function(newHash) {
-  var oldPut = fb.core.PersistentConnection.prototype.put;
-  fb.core.PersistentConnection.prototype.put = function(pathString, data, opt_onComplete, opt_hash) {
-    if (goog.isDef(opt_hash)) {
-      opt_hash = newHash();
-    }
-    oldPut.call(this, pathString, data, opt_onComplete, opt_hash);
-  };
-  return function() {
-    fb.core.PersistentConnection.prototype.put = oldPut;
-  };
-};
-goog.exportProperty(fb.api.TEST_ACCESS, "hijackHash", fb.api.TEST_ACCESS.hijackHash);
-fb.api.TEST_ACCESS.ConnectionTarget = fb.core.RepoInfo;
-goog.exportProperty(fb.api.TEST_ACCESS, "ConnectionTarget", fb.api.TEST_ACCESS.ConnectionTarget);
-fb.api.TEST_ACCESS.queryIdentifier = function(query) {
-  return query.queryIdentifier();
-};
-goog.exportProperty(fb.api.TEST_ACCESS, "queryIdentifier", fb.api.TEST_ACCESS.queryIdentifier);
-fb.api.TEST_ACCESS.listens = function(firebaseRef) {
-  return firebaseRef.repo.persistentConnection_.listens_;
-};
-goog.exportProperty(fb.api.TEST_ACCESS, "listens", fb.api.TEST_ACCESS.listens);
-fb.api.TEST_ACCESS.forceRestClient = function(repoManager) {
-  repoManager.forceRestClient();
-};
-goog.exportProperty(fb.api.TEST_ACCESS, "forceRestClient", fb.api.TEST_ACCESS.forceRestClient);
-goog.provide("Firebase");
-goog.require("fb.api.INTERNAL");
-goog.require("fb.api.OnDisconnect");
-goog.require("fb.api.Query");
-goog.require("fb.api.TEST_ACCESS");
-goog.require("fb.constants");
-goog.require("fb.core.Repo");
-goog.require("fb.core.RepoManager");
-goog.require("fb.core.storage");
-goog.require("fb.core.util");
-goog.require("fb.core.util.nextPushId");
-goog.require("fb.core.util.validation");
-goog.require("goog.string");
-Firebase = function(urlOrRepo, pathOrContext) {
-  var repo, path, repoManager;
-  if (urlOrRepo instanceof fb.core.Repo) {
-    repo = urlOrRepo;
-    path = (pathOrContext);
-  } else {
-    fb.util.validation.validateArgCount("new Firebase", 1, 2, arguments.length);
-    var parsedUrl = fb.core.util.parseRepoInfo(arguments[0]), repoInfo = parsedUrl.repoInfo;
-    fb.core.util.validation.validateUrl("new Firebase", 1, parsedUrl);
-    if (pathOrContext) {
-      if (pathOrContext instanceof fb.core.RepoManager) {
-        repoManager = (pathOrContext);
-      } else {
-        if (goog.isString(pathOrContext)) {
-          repoManager = fb.core.RepoManager.getInstance();
-          repoInfo.persistenceKey = pathOrContext;
-        } else {
-          throw new Error("Expected a valid Firebase.Context for second argument to new Firebase()");
-        }
-      }
-    } else {
-      repoManager = fb.core.RepoManager.getInstance();
-    }
-    repo = repoManager.getRepo(repoInfo);
-    path = parsedUrl.path;
-  }
-  fb.api.Query.call(this, repo, path, fb.core.view.QueryParams.DEFAULT, false);
-};
-goog.inherits(Firebase, fb.api.Query);
-if (NODE_CLIENT) {
-  module["exports"] = Firebase;
-}
-Firebase.prototype.name = function() {
-  fb.core.util.warn("Firebase.name() being deprecated. Please use Firebase.key() instead.");
-  fb.util.validation.validateArgCount("Firebase.name", 0, 0, arguments.length);
-  return this.key();
-};
-Firebase.prototype.key = function() {
-  fb.util.validation.validateArgCount("Firebase.key", 0, 0, arguments.length);
-  if (this.path.isEmpty()) {
-    return null;
-  } else {
-    return this.path.getBack();
-  }
-};
-Firebase.prototype.child = function(pathString) {
-  fb.util.validation.validateArgCount("Firebase.child", 1, 1, arguments.length);
-  if (goog.isNumber(pathString)) {
-    pathString = String(pathString);
-  } else {
-    if (!(pathString instanceof fb.core.util.Path)) {
-      if (this.path.getFront() === null) {
-        fb.core.util.validation.validateRootPathString("Firebase.child", 1, pathString, false);
-      } else {
-        fb.core.util.validation.validatePathString("Firebase.child", 1, pathString, false);
-      }
-    }
-  }
-  return new Firebase(this.repo, this.path.child(pathString));
-};
-Firebase.prototype.parent = function() {
-  fb.util.validation.validateArgCount("Firebase.parent", 0, 0, arguments.length);
-  var parentPath = this.path.parent();
-  return parentPath === null ? null : new Firebase(this.repo, parentPath);
-};
-Firebase.prototype.root = function() {
-  fb.util.validation.validateArgCount("Firebase.ref", 0, 0, arguments.length);
-  var ref = this;
-  while (ref.parent() !== null) {
-    ref = ref.parent();
-  }
-  return ref;
-};
-Firebase.prototype.set = function(newVal, onComplete) {
-  fb.util.validation.validateArgCount("Firebase.set", 1, 2, arguments.length);
-  fb.core.util.validation.validateWritablePath("Firebase.set", this.path);
-  fb.core.util.validation.validateFirebaseDataArg("Firebase.set", 1, newVal, this.path, false);
-  fb.util.validation.validateCallback("Firebase.set", 2, onComplete, true);
-  this.repo.setWithPriority(this.path, newVal, null, onComplete || null);
-};
-Firebase.prototype.update = function(objectToMerge, onComplete) {
-  fb.util.validation.validateArgCount("Firebase.update", 1, 2, arguments.length);
-  fb.core.util.validation.validateWritablePath("Firebase.update", this.path);
-  if (goog.isArray(objectToMerge)) {
-    var newObjectToMerge = {};
-    for (var i = 0;i < objectToMerge.length;++i) {
-      newObjectToMerge["" + i] = objectToMerge[i];
-    }
-    objectToMerge = newObjectToMerge;
-    fb.core.util.warn("Passing an Array to Firebase.update() is deprecated. Use set() if you want to overwrite the existing data, or " + "an Object with integer keys if you really do want to only update some of the children.");
-  }
-  fb.core.util.validation.validateFirebaseMergeDataArg("Firebase.update", 1, objectToMerge, this.path, false);
-  fb.util.validation.validateCallback("Firebase.update", 2, onComplete, true);
-  this.repo.update(this.path, objectToMerge, onComplete || null);
-};
-Firebase.prototype.setWithPriority = function(newVal, newPriority, onComplete) {
-  fb.util.validation.validateArgCount("Firebase.setWithPriority", 2, 3, arguments.length);
-  fb.core.util.validation.validateWritablePath("Firebase.setWithPriority", this.path);
-  fb.core.util.validation.validateFirebaseDataArg("Firebase.setWithPriority", 1, newVal, this.path, false);
-  fb.core.util.validation.validatePriority("Firebase.setWithPriority", 2, newPriority, false);
-  fb.util.validation.validateCallback("Firebase.setWithPriority", 3, onComplete, true);
-  if (this.key() === ".length" || this.key() === ".keys") {
-    throw "Firebase.setWithPriority failed: " + this.key() + " is a read-only object.";
-  }
-  this.repo.setWithPriority(this.path, newVal, newPriority, onComplete || null);
-};
-Firebase.prototype.remove = function(onComplete) {
-  fb.util.validation.validateArgCount("Firebase.remove", 0, 1, arguments.length);
-  fb.core.util.validation.validateWritablePath("Firebase.remove", this.path);
-  fb.util.validation.validateCallback("Firebase.remove", 1, onComplete, true);
-  this.set(null, onComplete);
-};
-Firebase.prototype.transaction = function(transactionUpdate, onComplete, applyLocally) {
-  fb.util.validation.validateArgCount("Firebase.transaction", 1, 3, arguments.length);
-  fb.core.util.validation.validateWritablePath("Firebase.transaction", this.path);
-  fb.util.validation.validateCallback("Firebase.transaction", 1, transactionUpdate, false);
-  fb.util.validation.validateCallback("Firebase.transaction", 2, onComplete, true);
-  fb.core.util.validation.validateBoolean("Firebase.transaction", 3, applyLocally, true);
-  if (this.key() === ".length" || this.key() === ".keys") {
-    throw "Firebase.transaction failed: " + this.key() + " is a read-only object.";
-  }
-  if (typeof applyLocally === "undefined") {
-    applyLocally = true;
-  }
-  this.repo.startTransaction(this.path, transactionUpdate, onComplete || null, applyLocally);
-};
-Firebase.prototype.setPriority = function(priority, opt_onComplete) {
-  fb.util.validation.validateArgCount("Firebase.setPriority", 1, 2, arguments.length);
-  fb.core.util.validation.validateWritablePath("Firebase.setPriority", this.path);
-  fb.core.util.validation.validatePriority("Firebase.setPriority", 1, priority, false);
-  fb.util.validation.validateCallback("Firebase.setPriority", 2, opt_onComplete, true);
-  this.repo.setWithPriority(this.path.child(".priority"), priority, null, opt_onComplete);
-};
-Firebase.prototype.push = function(value, onComplete) {
-  fb.util.validation.validateArgCount("Firebase.push", 0, 2, arguments.length);
-  fb.core.util.validation.validateWritablePath("Firebase.push", this.path);
-  fb.core.util.validation.validateFirebaseDataArg("Firebase.push", 1, value, this.path, true);
-  fb.util.validation.validateCallback("Firebase.push", 2, onComplete, true);
-  var now = this.repo.serverTime();
-  var name = fb.core.util.nextPushId(now);
-  var pushedRef = this.child(name);
-  if (typeof value !== "undefined" && value !== null) {
-    pushedRef.set(value, onComplete);
-  }
-  return pushedRef;
-};
-Firebase.prototype.onDisconnect = function() {
-  fb.core.util.validation.validateWritablePath("Firebase.onDisconnect", this.path);
-  return new fb.api.OnDisconnect(this.repo, this.path);
-};
-Firebase.prototype.auth = function(cred, opt_onComplete, opt_onCancel) {
-  fb.core.util.warn("FirebaseRef.auth() being deprecated. " + "Please use FirebaseRef.authWithCustomToken() instead.");
-  fb.util.validation.validateArgCount("Firebase.auth", 1, 3, arguments.length);
-  fb.core.util.validation.validateCredential("Firebase.auth", 1, cred, false);
-  fb.util.validation.validateCallback("Firebase.auth", 2, opt_onComplete, true);
-  fb.util.validation.validateCallback("Firebase.auth", 3, opt_onComplete, true);
-  var clientOptions = {};
-  clientOptions[fb.login.Constants.CLIENT_OPTION_SESSION_PERSISTENCE] = "none";
-  this.repo.auth.authenticate(cred, {}, clientOptions, opt_onComplete, opt_onCancel);
-};
-Firebase.prototype.unauth = function(opt_onComplete) {
-  fb.util.validation.validateArgCount("Firebase.unauth", 0, 1, arguments.length);
-  fb.util.validation.validateCallback("Firebase.unauth", 1, opt_onComplete, true);
-  this.repo.auth.unauthenticate(opt_onComplete);
-};
-Firebase.prototype.getAuth = function() {
-  fb.util.validation.validateArgCount("Firebase.getAuth", 0, 0, arguments.length);
-  return this.repo.auth.getAuth();
-};
-Firebase.prototype.onAuth = function(callback, opt_context) {
-  fb.util.validation.validateArgCount("Firebase.onAuth", 1, 2, arguments.length);
-  fb.util.validation.validateCallback("Firebase.onAuth", 1, callback, false);
-  fb.util.validation.validateContextObject("Firebase.onAuth", 2, opt_context, true);
-  this.repo.auth.on("auth_status", callback, opt_context);
-};
-Firebase.prototype.offAuth = function(callback, opt_context) {
-  fb.util.validation.validateArgCount("Firebase.offAuth", 1, 2, arguments.length);
-  fb.util.validation.validateCallback("Firebase.offAuth", 1, callback, false);
-  fb.util.validation.validateContextObject("Firebase.offAuth", 2, opt_context, true);
-  this.repo.auth.off("auth_status", callback, opt_context);
-};
-Firebase.prototype.authWithCustomToken = function(token, onComplete, opt_options) {
-  fb.util.validation.validateArgCount("Firebase.authWithCustomToken", 2, 3, arguments.length);
-  fb.core.util.validation.validateCredential("Firebase.authWithCustomToken", 1, token, false);
-  fb.util.validation.validateCallback("Firebase.authWithCustomToken", 2, onComplete, false);
-  fb.core.util.validation.validateObject("Firebase.authWithCustomToken", 3, opt_options, true);
-  this.repo.auth.authenticate(token, {}, opt_options || {}, onComplete);
-};
-Firebase.prototype.authWithOAuthPopup = function(provider, onComplete, opt_options) {
-  fb.util.validation.validateArgCount("Firebase.authWithOAuthPopup", 2, 3, arguments.length);
-  fb.core.util.validation.validateString("Firebase.authWithOAuthPopup", 1, provider, false);
-  fb.util.validation.validateCallback("Firebase.authWithOAuthPopup", 2, onComplete, false);
-  fb.core.util.validation.validateObject("Firebase.authWithOAuthPopup", 3, opt_options, true);
-  this.repo.auth.authWithPopup(provider, opt_options, onComplete);
-};
-Firebase.prototype.authWithOAuthRedirect = function(provider, onErr, opt_options) {
-  fb.util.validation.validateArgCount("Firebase.authWithOAuthRedirect", 2, 3, arguments.length);
-  fb.core.util.validation.validateString("Firebase.authWithOAuthRedirect", 1, provider, false);
-  fb.util.validation.validateCallback("Firebase.authWithOAuthRedirect", 2, onErr, false);
-  fb.core.util.validation.validateObject("Firebase.authWithOAuthRedirect", 3, opt_options, true);
-  this.repo.auth.authWithRedirect(provider, opt_options, onErr);
-};
-Firebase.prototype.authWithOAuthToken = function(provider, params, onComplete, opt_options) {
-  fb.util.validation.validateArgCount("Firebase.authWithOAuthToken", 3, 4, arguments.length);
-  fb.core.util.validation.validateString("Firebase.authWithOAuthToken", 1, provider, false);
-  fb.util.validation.validateCallback("Firebase.authWithOAuthToken", 3, onComplete, false);
-  fb.core.util.validation.validateObject("Firebase.authWithOAuthToken", 4, opt_options, true);
-  if (goog.isString(params)) {
-    fb.core.util.validation.validateString("Firebase.authWithOAuthToken", 2, params, false);
-    this.repo.auth.authWithCredential(provider + "/token", {"access_token":params}, opt_options, onComplete);
-  } else {
-    fb.core.util.validation.validateObject("Firebase.authWithOAuthToken", 2, params, false);
-    this.repo.auth.authWithCredential(provider + "/token", params, opt_options, onComplete);
-  }
-};
-Firebase.prototype.authAnonymously = function(onComplete, opt_options) {
-  fb.util.validation.validateArgCount("Firebase.authAnonymously", 1, 2, arguments.length);
-  fb.util.validation.validateCallback("Firebase.authAnonymously", 1, onComplete, false);
-  fb.core.util.validation.validateObject("Firebase.authAnonymously", 2, opt_options, true);
-  this.repo.auth.authWithCredential("anonymous", {}, opt_options, onComplete);
-};
-Firebase.prototype.authWithPassword = function(params, onComplete, opt_options) {
-  fb.util.validation.validateArgCount("Firebase.authWithPassword", 2, 3, arguments.length);
-  fb.core.util.validation.validateObject("Firebase.authWithPassword", 1, params, false);
-  fb.core.util.validation.validateObjectContainsKey("Firebase.authWithPassword", 1, params, "email", false, "string");
-  fb.core.util.validation.validateObjectContainsKey("Firebase.authWithPassword", 1, params, "password", false, "string");
-  fb.util.validation.validateCallback("Firebase.authAnonymously", 2, onComplete, false);
-  fb.core.util.validation.validateObject("Firebase.authAnonymously", 3, opt_options, true);
-  this.repo.auth.authWithCredential("password", params, opt_options, onComplete);
-};
-Firebase.prototype.createUser = function(params, onComplete) {
-  fb.util.validation.validateArgCount("Firebase.createUser", 2, 2, arguments.length);
-  fb.core.util.validation.validateObject("Firebase.createUser", 1, params, false);
-  fb.core.util.validation.validateObjectContainsKey("Firebase.createUser", 1, params, "email", false, "string");
-  fb.core.util.validation.validateObjectContainsKey("Firebase.createUser", 1, params, "password", false, "string");
-  fb.util.validation.validateCallback("Firebase.createUser", 2, onComplete, false);
-  this.repo.auth.createUser(params, onComplete);
-};
-Firebase.prototype.removeUser = function(params, onComplete) {
-  fb.util.validation.validateArgCount("Firebase.removeUser", 2, 2, arguments.length);
-  fb.core.util.validation.validateObject("Firebase.removeUser", 1, params, false);
-  fb.core.util.validation.validateObjectContainsKey("Firebase.removeUser", 1, params, "email", false, "string");
-  fb.core.util.validation.validateObjectContainsKey("Firebase.removeUser", 1, params, "password", false, "string");
-  fb.util.validation.validateCallback("Firebase.removeUser", 2, onComplete, false);
-  this.repo.auth.removeUser(params, onComplete);
-};
-Firebase.prototype.changePassword = function(params, onComplete) {
-  fb.util.validation.validateArgCount("Firebase.changePassword", 2, 2, arguments.length);
-  fb.core.util.validation.validateObject("Firebase.changePassword", 1, params, false);
-  fb.core.util.validation.validateObjectContainsKey("Firebase.changePassword", 1, params, "email", false, "string");
-  fb.core.util.validation.validateObjectContainsKey("Firebase.changePassword", 1, params, "oldPassword", false, "string");
-  fb.core.util.validation.validateObjectContainsKey("Firebase.changePassword", 1, params, "newPassword", false, "string");
-  fb.util.validation.validateCallback("Firebase.changePassword", 2, onComplete, false);
-  this.repo.auth.changePassword(params, onComplete);
-};
-Firebase.prototype.changeEmail = function(params, onComplete) {
-  fb.util.validation.validateArgCount("Firebase.changeEmail", 2, 2, arguments.length);
-  fb.core.util.validation.validateObject("Firebase.changeEmail", 1, params, false);
-  fb.core.util.validation.validateObjectContainsKey("Firebase.changeEmail", 1, params, "oldEmail", false, "string");
-  fb.core.util.validation.validateObjectContainsKey("Firebase.changeEmail", 1, params, "newEmail", false, "string");
-  fb.core.util.validation.validateObjectContainsKey("Firebase.changeEmail", 1, params, "password", false, "string");
-  fb.util.validation.validateCallback("Firebase.changeEmail", 2, onComplete, false);
-  this.repo.auth.changeEmail(params, onComplete);
-};
-Firebase.prototype.resetPassword = function(params, onComplete) {
-  fb.util.validation.validateArgCount("Firebase.resetPassword", 2, 2, arguments.length);
-  fb.core.util.validation.validateObject("Firebase.resetPassword", 1, params, false);
-  fb.core.util.validation.validateObjectContainsKey("Firebase.resetPassword", 1, params, "email", false, "string");
-  fb.util.validation.validateCallback("Firebase.resetPassword", 2, onComplete, false);
-  this.repo.auth.resetPassword(params, onComplete);
-};
-Firebase.goOffline = function() {
-  fb.util.validation.validateArgCount("Firebase.goOffline", 0, 0, arguments.length);
-  fb.core.RepoManager.getInstance().interrupt();
-};
-Firebase.goOnline = function() {
-  fb.util.validation.validateArgCount("Firebase.goOnline", 0, 0, arguments.length);
-  fb.core.RepoManager.getInstance().resume();
-};
-Firebase.enableLogging = function(logger, persistent) {
-  fb.core.util.assert(!persistent || (logger === true || logger === false), "Can't turn on custom loggers persistently.");
-  if (logger === true) {
-    if (typeof console !== "undefined") {
-      if (typeof console.log === "function") {
-        fb.core.util.logger = goog.bind(console.log, console);
-      } else {
-        if (typeof console.log === "object") {
-          fb.core.util.logger = function(message) {
-            console.log(message);
-          };
-        }
-      }
-    }
-    if (persistent) {
-      fb.core.storage.SessionStorage.set("logging_enabled", true);
-    }
-  } else {
-    if (logger) {
-      fb.core.util.logger = logger;
-    } else {
-      fb.core.util.logger = null;
-      fb.core.storage.SessionStorage.remove("logging_enabled");
-    }
-  }
-};
-Firebase.ServerValue = {"TIMESTAMP":{".sv":"timestamp"}};
-Firebase.SDK_VERSION = CLIENT_VERSION;
-Firebase.INTERNAL = fb.api.INTERNAL;
-Firebase.Context = fb.core.RepoManager;
-Firebase.TEST_ACCESS = fb.api.TEST_ACCESS;
-
-Firebase.SDK_VERSION = '2.2.4';
-
diff --git a/ionic/components/app/test/sink/firebase.js b/ionic/components/app/test/sink/firebase.js
deleted file mode 100644
index 31bd0fdc16..0000000000
--- a/ionic/components/app/test/sink/firebase.js
+++ /dev/null
@@ -1,263 +0,0 @@
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-h.send=function(a){eh(this);a=B(a);this.pb+=a.length;Lb(this.Va,"bytes_sent",a.length);a=Xc(a,16384);1<a.length&&this.va.send(String(a.length));for(var b=0;b<a.length;b++)this.va.send(a[b])};h.cd=function(){this.zb=!0;this.Jc&&(clearInterval(this.Jc),this.Jc=null);this.va&&(this.va.close(),this.va=null)};h.ib=function(){this.zb||(this.f("WebSocket is closing itself"),this.cd(),this.jb&&(this.jb(this.Gc),this.jb=null))};h.close=function(){this.zb||(this.f("WebSocket is being closed"),this.cd())};
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-Y.prototype.He=function(a){x("Query.limitToFirst",1,1,arguments.length);if(!ga(a)||Math.floor(a)!==a||0>=a)throw Error("Query.limitToFirst: First argument must be a positive integer.");if(this.n.ia)throw Error("Query.limitToFirst: Limit was already set (by another call to limit, limitToFirst, or limitToLast).");return new Y(this.k,this.path,this.n.He(a),this.jc)};Y.prototype.limitToFirst=Y.prototype.He;
-Y.prototype.Ie=function(a){x("Query.limitToLast",1,1,arguments.length);if(!ga(a)||Math.floor(a)!==a||0>=a)throw Error("Query.limitToLast: First argument must be a positive integer.");if(this.n.ia)throw Error("Query.limitToLast: Limit was already set (by another call to limit, limitToFirst, or limitToLast).");return new Y(this.k,this.path,this.n.Ie(a),this.jc)};Y.prototype.limitToLast=Y.prototype.Ie;
-Y.prototype.Bg=function(a){x("Query.orderByChild",1,1,arguments.length);if("$key"===a)throw Error('Query.orderByChild: "$key" is invalid.  Use Query.orderByKey() instead.');if("$priority"===a)throw Error('Query.orderByChild: "$priority" is invalid.  Use Query.orderByPriority() instead.');if("$value"===a)throw Error('Query.orderByChild: "$value" is invalid.  Use Query.orderByValue() instead.');Wf("Query.orderByChild",1,a,!1);gi(this,"Query.orderByChild");var b=be(this.n,new Rd(a));ei(b);return new Y(this.k,
-this.path,b,!0)};Y.prototype.orderByChild=Y.prototype.Bg;Y.prototype.Cg=function(){x("Query.orderByKey",0,0,arguments.length);gi(this,"Query.orderByKey");var a=be(this.n,Vd);ei(a);return new Y(this.k,this.path,a,!0)};Y.prototype.orderByKey=Y.prototype.Cg;Y.prototype.Dg=function(){x("Query.orderByPriority",0,0,arguments.length);gi(this,"Query.orderByPriority");var a=be(this.n,M);ei(a);return new Y(this.k,this.path,a,!0)};Y.prototype.orderByPriority=Y.prototype.Dg;
-Y.prototype.Eg=function(){x("Query.orderByValue",0,0,arguments.length);gi(this,"Query.orderByValue");var a=be(this.n,Yd);ei(a);return new Y(this.k,this.path,a,!0)};Y.prototype.orderByValue=Y.prototype.Eg;
-Y.prototype.Xd=function(a,b){x("Query.startAt",0,2,arguments.length);Rf("Query.startAt",a,this.path,!0);Wf("Query.startAt",2,b,!0);var c=this.n.Xd(a,b);fi(c);ei(c);if(this.n.la)throw Error("Query.startAt: Starting point was already set (by another call to startAt or equalTo).");n(a)||(b=a=null);return new Y(this.k,this.path,c,this.jc)};Y.prototype.startAt=Y.prototype.Xd;
-Y.prototype.qd=function(a,b){x("Query.endAt",0,2,arguments.length);Rf("Query.endAt",a,this.path,!0);Wf("Query.endAt",2,b,!0);var c=this.n.qd(a,b);fi(c);ei(c);if(this.n.na)throw Error("Query.endAt: Ending point was already set (by another call to endAt or equalTo).");return new Y(this.k,this.path,c,this.jc)};Y.prototype.endAt=Y.prototype.qd;
-Y.prototype.hg=function(a,b){x("Query.equalTo",1,2,arguments.length);Rf("Query.equalTo",a,this.path,!1);Wf("Query.equalTo",2,b,!0);if(this.n.la)throw Error("Query.equalTo: Starting point was already set (by another call to endAt or equalTo).");if(this.n.na)throw Error("Query.equalTo: Ending point was already set (by another call to endAt or equalTo).");return this.Xd(a,b).qd(a,b)};Y.prototype.equalTo=Y.prototype.hg;
-Y.prototype.toString=function(){x("Query.toString",0,0,arguments.length);for(var a=this.path,b="",c=a.Y;c<a.o.length;c++)""!==a.o[c]&&(b+="/"+encodeURIComponent(String(a.o[c])));a=this.k.toString()+(b||"/");b=jb(ee(this.n));return a+=b.replace(/^&/,"")};Y.prototype.toString=Y.prototype.toString;Y.prototype.wa=function(){var a=Wc(ce(this.n));return"{}"===a?"default":a};
-function hi(a,b,c){var d={cancel:null,Ma:null};if(b&&c)d.cancel=b,A(a,3,d.cancel,!0),d.Ma=c,lb(a,4,d.Ma);else if(b)if("object"===typeof b&&null!==b)d.Ma=b;else if("function"===typeof b)d.cancel=b;else throw Error(z(a,3,!0)+" must either be a cancel callback or a context object.");return d};var Z={};Z.vc=wh;Z.DataConnection=Z.vc;wh.prototype.Og=function(a,b){this.Da("q",{p:a},b)};Z.vc.prototype.simpleListen=Z.vc.prototype.Og;wh.prototype.gg=function(a,b){this.Da("echo",{d:a},b)};Z.vc.prototype.echo=Z.vc.prototype.gg;wh.prototype.interrupt=wh.prototype.yb;Z.Sf=kh;Z.RealTimeConnection=Z.Sf;kh.prototype.sendRequest=kh.prototype.Da;kh.prototype.close=kh.prototype.close;
-Z.og=function(a){var b=wh.prototype.put;wh.prototype.put=function(c,d,e,f){n(f)&&(f=a());b.call(this,c,d,e,f)};return function(){wh.prototype.put=b}};Z.hijackHash=Z.og;Z.Rf=Ec;Z.ConnectionTarget=Z.Rf;Z.wa=function(a){return a.wa()};Z.queryIdentifier=Z.wa;Z.qg=function(a){return a.k.Ra.aa};Z.listens=Z.qg;Z.ue=function(a){a.ue()};Z.forceRestClient=Z.ue;function U(a,b){var c,d,e;if(a instanceof Kh)c=a,d=b;else{x("new Firebase",1,2,arguments.length);d=Rc(arguments[0]);c=d.Qg;"firebase"===d.domain&&Qc(d.host+" is no longer supported. Please use <YOUR FIREBASE>.firebaseio.com instead");c||Qc("Cannot parse Firebase url. Please use https://<YOUR FIREBASE>.firebaseio.com");d.lb||"undefined"!==typeof window&&window.location&&window.location.protocol&&-1!==window.location.protocol.indexOf("https:")&&Q("Insecure Firebase access from a secure page. Please use https in calls to new Firebase().");
-c=new Ec(d.host,d.lb,c,"ws"===d.scheme||"wss"===d.scheme);d=new K(d.Zc);e=d.toString();var f;!(f=!p(c.host)||0===c.host.length||!Pf(c.Cb))&&(f=0!==e.length)&&(e&&(e=e.replace(/^\/*\.info(\/|$)/,"/")),f=!(p(e)&&0!==e.length&&!Of.test(e)));if(f)throw Error(z("new Firebase",1,!1)+'must be a valid firebase URL and the path can\'t contain ".", "#", "$", "[", or "]".');if(b)if(b instanceof W)e=b;else if(p(b))e=W.ub(),c.Ld=b;else throw Error("Expected a valid Firebase.Context for second argument to new Firebase()");
-else e=W.ub();f=c.toString();var g=w(e.nc,f);g||(g=new Kh(c,e.Pf),e.nc[f]=g);c=g}Y.call(this,c,d,$d,!1)}ma(U,Y);var ii=U,ji=["Firebase"],ki=aa;ji[0]in ki||!ki.execScript||ki.execScript("var "+ji[0]);for(var li;ji.length&&(li=ji.shift());)!ji.length&&n(ii)?ki[li]=ii:ki=ki[li]?ki[li]:ki[li]={};U.prototype.name=function(){Q("Firebase.name() being deprecated. Please use Firebase.key() instead.");x("Firebase.name",0,0,arguments.length);return this.key()};U.prototype.name=U.prototype.name;
-U.prototype.key=function(){x("Firebase.key",0,0,arguments.length);return this.path.e()?null:vc(this.path)};U.prototype.key=U.prototype.key;U.prototype.w=function(a){x("Firebase.child",1,1,arguments.length);if(ga(a))a=String(a);else if(!(a instanceof K))if(null===O(this.path)){var b=a;b&&(b=b.replace(/^\/*\.info(\/|$)/,"/"));Xf("Firebase.child",b)}else Xf("Firebase.child",a);return new U(this.k,this.path.w(a))};U.prototype.child=U.prototype.w;
-U.prototype.parent=function(){x("Firebase.parent",0,0,arguments.length);var a=this.path.parent();return null===a?null:new U(this.k,a)};U.prototype.parent=U.prototype.parent;U.prototype.root=function(){x("Firebase.ref",0,0,arguments.length);for(var a=this;null!==a.parent();)a=a.parent();return a};U.prototype.root=U.prototype.root;
-U.prototype.set=function(a,b){x("Firebase.set",1,2,arguments.length);Yf("Firebase.set",this.path);Rf("Firebase.set",a,this.path,!1);A("Firebase.set",2,b,!0);this.k.Kb(this.path,a,null,b||null)};U.prototype.set=U.prototype.set;
-U.prototype.update=function(a,b){x("Firebase.update",1,2,arguments.length);Yf("Firebase.update",this.path);if(ea(a)){for(var c={},d=0;d<a.length;++d)c[""+d]=a[d];a=c;Q("Passing an Array to Firebase.update() is deprecated. Use set() if you want to overwrite the existing data, or an Object with integer keys if you really do want to only update some of the children.")}Tf("Firebase.update",a,this.path);A("Firebase.update",2,b,!0);this.k.update(this.path,a,b||null)};U.prototype.update=U.prototype.update;
-U.prototype.Kb=function(a,b,c){x("Firebase.setWithPriority",2,3,arguments.length);Yf("Firebase.setWithPriority",this.path);Rf("Firebase.setWithPriority",a,this.path,!1);Uf("Firebase.setWithPriority",2,b);A("Firebase.setWithPriority",3,c,!0);if(".length"===this.key()||".keys"===this.key())throw"Firebase.setWithPriority failed: "+this.key()+" is a read-only object.";this.k.Kb(this.path,a,b,c||null)};U.prototype.setWithPriority=U.prototype.Kb;
-U.prototype.remove=function(a){x("Firebase.remove",0,1,arguments.length);Yf("Firebase.remove",this.path);A("Firebase.remove",1,a,!0);this.set(null,a)};U.prototype.remove=U.prototype.remove;
-U.prototype.transaction=function(a,b,c){x("Firebase.transaction",1,3,arguments.length);Yf("Firebase.transaction",this.path);A("Firebase.transaction",1,a,!1);A("Firebase.transaction",2,b,!0);if(n(c)&&"boolean"!=typeof c)throw Error(z("Firebase.transaction",3,!0)+"must be a boolean.");if(".length"===this.key()||".keys"===this.key())throw"Firebase.transaction failed: "+this.key()+" is a read-only object.";"undefined"===typeof c&&(c=!0);Wh(this.k,this.path,a,b||null,c)};U.prototype.transaction=U.prototype.transaction;
-U.prototype.Lg=function(a,b){x("Firebase.setPriority",1,2,arguments.length);Yf("Firebase.setPriority",this.path);Uf("Firebase.setPriority",1,a);A("Firebase.setPriority",2,b,!0);this.k.Kb(this.path.w(".priority"),a,null,b)};U.prototype.setPriority=U.prototype.Lg;
-U.prototype.push=function(a,b){x("Firebase.push",0,2,arguments.length);Yf("Firebase.push",this.path);Rf("Firebase.push",a,this.path,!0);A("Firebase.push",2,b,!0);var c=Mh(this.k),c=Kf(c),c=this.w(c);"undefined"!==typeof a&&null!==a&&c.set(a,b);return c};U.prototype.push=U.prototype.push;U.prototype.jb=function(){Yf("Firebase.onDisconnect",this.path);return new X(this.k,this.path)};U.prototype.onDisconnect=U.prototype.jb;
-U.prototype.P=function(a,b,c){Q("FirebaseRef.auth() being deprecated. Please use FirebaseRef.authWithCustomToken() instead.");x("Firebase.auth",1,3,arguments.length);Zf("Firebase.auth",a);A("Firebase.auth",2,b,!0);A("Firebase.auth",3,b,!0);Kg(this.k.P,a,{},{remember:"none"},b,c)};U.prototype.auth=U.prototype.P;U.prototype.ee=function(a){x("Firebase.unauth",0,1,arguments.length);A("Firebase.unauth",1,a,!0);Lg(this.k.P,a)};U.prototype.unauth=U.prototype.ee;
-U.prototype.we=function(){x("Firebase.getAuth",0,0,arguments.length);return this.k.P.we()};U.prototype.getAuth=U.prototype.we;U.prototype.ug=function(a,b){x("Firebase.onAuth",1,2,arguments.length);A("Firebase.onAuth",1,a,!1);lb("Firebase.onAuth",2,b);this.k.P.Eb("auth_status",a,b)};U.prototype.onAuth=U.prototype.ug;U.prototype.tg=function(a,b){x("Firebase.offAuth",1,2,arguments.length);A("Firebase.offAuth",1,a,!1);lb("Firebase.offAuth",2,b);this.k.P.gc("auth_status",a,b)};U.prototype.offAuth=U.prototype.tg;
-U.prototype.Wf=function(a,b,c){x("Firebase.authWithCustomToken",2,3,arguments.length);Zf("Firebase.authWithCustomToken",a);A("Firebase.authWithCustomToken",2,b,!1);ag("Firebase.authWithCustomToken",3,c,!0);Kg(this.k.P,a,{},c||{},b)};U.prototype.authWithCustomToken=U.prototype.Wf;U.prototype.Xf=function(a,b,c){x("Firebase.authWithOAuthPopup",2,3,arguments.length);$f("Firebase.authWithOAuthPopup",1,a);A("Firebase.authWithOAuthPopup",2,b,!1);ag("Firebase.authWithOAuthPopup",3,c,!0);Pg(this.k.P,a,c,b)};
-U.prototype.authWithOAuthPopup=U.prototype.Xf;U.prototype.Yf=function(a,b,c){x("Firebase.authWithOAuthRedirect",2,3,arguments.length);$f("Firebase.authWithOAuthRedirect",1,a);A("Firebase.authWithOAuthRedirect",2,b,!1);ag("Firebase.authWithOAuthRedirect",3,c,!0);var d=this.k.P;Ng(d);var e=[wg],f=ig(c);"anonymous"===a||"firebase"===a?R(b,yg("TRANSPORT_UNAVAILABLE")):(P.set("redirect_client_options",f.ld),Og(d,e,"/auth/"+a,f,b))};U.prototype.authWithOAuthRedirect=U.prototype.Yf;
-U.prototype.Zf=function(a,b,c,d){x("Firebase.authWithOAuthToken",3,4,arguments.length);$f("Firebase.authWithOAuthToken",1,a);A("Firebase.authWithOAuthToken",3,c,!1);ag("Firebase.authWithOAuthToken",4,d,!0);p(b)?($f("Firebase.authWithOAuthToken",2,b),Mg(this.k.P,a+"/token",{access_token:b},d,c)):(ag("Firebase.authWithOAuthToken",2,b,!1),Mg(this.k.P,a+"/token",b,d,c))};U.prototype.authWithOAuthToken=U.prototype.Zf;
-U.prototype.Vf=function(a,b){x("Firebase.authAnonymously",1,2,arguments.length);A("Firebase.authAnonymously",1,a,!1);ag("Firebase.authAnonymously",2,b,!0);Mg(this.k.P,"anonymous",{},b,a)};U.prototype.authAnonymously=U.prototype.Vf;
-U.prototype.$f=function(a,b,c){x("Firebase.authWithPassword",2,3,arguments.length);ag("Firebase.authWithPassword",1,a,!1);bg("Firebase.authWithPassword",a,"email");bg("Firebase.authWithPassword",a,"password");A("Firebase.authAnonymously",2,b,!1);ag("Firebase.authAnonymously",3,c,!0);Mg(this.k.P,"password",a,c,b)};U.prototype.authWithPassword=U.prototype.$f;
-U.prototype.re=function(a,b){x("Firebase.createUser",2,2,arguments.length);ag("Firebase.createUser",1,a,!1);bg("Firebase.createUser",a,"email");bg("Firebase.createUser",a,"password");A("Firebase.createUser",2,b,!1);this.k.P.re(a,b)};U.prototype.createUser=U.prototype.re;U.prototype.Se=function(a,b){x("Firebase.removeUser",2,2,arguments.length);ag("Firebase.removeUser",1,a,!1);bg("Firebase.removeUser",a,"email");bg("Firebase.removeUser",a,"password");A("Firebase.removeUser",2,b,!1);this.k.P.Se(a,b)};
-U.prototype.removeUser=U.prototype.Se;U.prototype.oe=function(a,b){x("Firebase.changePassword",2,2,arguments.length);ag("Firebase.changePassword",1,a,!1);bg("Firebase.changePassword",a,"email");bg("Firebase.changePassword",a,"oldPassword");bg("Firebase.changePassword",a,"newPassword");A("Firebase.changePassword",2,b,!1);this.k.P.oe(a,b)};U.prototype.changePassword=U.prototype.oe;
-U.prototype.ne=function(a,b){x("Firebase.changeEmail",2,2,arguments.length);ag("Firebase.changeEmail",1,a,!1);bg("Firebase.changeEmail",a,"oldEmail");bg("Firebase.changeEmail",a,"newEmail");bg("Firebase.changeEmail",a,"password");A("Firebase.changeEmail",2,b,!1);this.k.P.ne(a,b)};U.prototype.changeEmail=U.prototype.ne;
-U.prototype.Ue=function(a,b){x("Firebase.resetPassword",2,2,arguments.length);ag("Firebase.resetPassword",1,a,!1);bg("Firebase.resetPassword",a,"email");A("Firebase.resetPassword",2,b,!1);this.k.P.Ue(a,b)};U.prototype.resetPassword=U.prototype.Ue;U.goOffline=function(){x("Firebase.goOffline",0,0,arguments.length);W.ub().yb()};U.goOnline=function(){x("Firebase.goOnline",0,0,arguments.length);W.ub().qc()};
-function Nc(a,b){J(!b||!0===a||!1===a,"Can't turn on custom loggers persistently.");!0===a?("undefined"!==typeof console&&("function"===typeof console.log?Ab=q(console.log,console):"object"===typeof console.log&&(Ab=function(a){console.log(a)})),b&&P.set("logging_enabled",!0)):a?Ab=a:(Ab=null,P.remove("logging_enabled"))}U.enableLogging=Nc;U.ServerValue={TIMESTAMP:{".sv":"timestamp"}};U.SDK_VERSION="2.2.4";U.INTERNAL=V;U.Context=W;U.TEST_ACCESS=Z;})();
-
diff --git a/ionic/components/app/test/sink/hn.js b/ionic/components/app/test/sink/hn.js
deleted file mode 100644
index 67599b999b..0000000000
--- a/ionic/components/app/test/sink/hn.js
+++ /dev/null
@@ -1,33 +0,0 @@
-import {Promise} from 'angular2/src/facade/async';
-
-var APIUrl = 'https://hacker-news.firebaseio.com/v0/';
-
-export class HackerNewsClient {
-  constructor() {
-    //this.fb = new Firebase(APIUrl);
-  }
-
-  getTopStories(cb) {
-    console.log('GETTING TOP STORIES');
-
-    this.fb.child('topstories').on('value', (snapshot) => {
-
-      let items = snapshot.val();
-
-      console.log('Fetched', items.length, 'items');
-
-      for(var itemID of items) {
-
-        this.fb.child("item").child(itemID).on('value', (data) => {
-
-          cb(data.val());
-
-          //console.log(data.val());
-        });
-      }
-    });
-  }
-}
-
-var HackerNews = new HackerNewsClient();
-export { HackerNews };
diff --git a/ionic/components/app/test/sink/index.js b/ionic/components/app/test/sink/index.js
index 9c54765141..dbd699b96c 100644
--- a/ionic/components/app/test/sink/index.js
+++ b/ionic/components/app/test/sink/index.js
@@ -1,18 +1,47 @@
-import {bootstrap, ElementRef} from 'angular2/angular2'
+import {bootstrap, QueryList, ElementRef, NgFor, NgIf} from 'angular2/angular2'
 import {Component, Directive} from 'angular2/src/core/annotations_impl/annotations';
+import {Descendant} from 'angular2/src/core/annotations_impl/visibility';
 import {View} from 'angular2/src/core/annotations_impl/view';
+import {Query} from 'angular2/src/core/annotations_impl/di';
 
-import {Ionic, Toolbar, ViewContainer, Aside, List, Item, Content, Button} from 'ionic/ionic';
+console.log(Query, QueryList);
 
-@Component({ selector: 'ion-app' })
+import {Ionic, Nav, Toolbar, ViewContainer, Aside, List, Item, Content, Button} from 'ionic/ionic';
+
+import {ButtonPage} from './pages/button'
+import {ActionMenuPage} from './pages/action-menu'
+
+@Component({
+  selector: 'ion-app',
+  properties: [
+    'aside: aside'
+  ]
+})
 @View({
   templateUrl: 'main.html',
-  directives: [Aside, List, ViewContainer, Toolbar, Item, Content, Button]
+  directives: [Nav, NgFor, NgIf, Aside, List, ViewContainer, Toolbar, Item, Content, Button]
 })
 export class IonicApp {
-  constructor(elementRef: ElementRef) {
+  constructor(elementRef: ElementRef) {//, @Query(Aside) nav: QueryList) {//, @Descendant() aside: Aside) {
     Ionic.setRootElementRef(elementRef);
-    console.log('IonicApp start: Kitchen Sink');
+
+    this.components = [
+      { title: 'Buttons', component: ButtonPage },
+      { title: 'Action Menu', component: ActionMenuPage }
+    ];
+
+    this.firstPage = ButtonPage
+  }
+
+  openPage(aside, component) {
+    console.log('Opening', aside, component);
+    aside.close();
+    window.nav.clear().then(() => {
+      console.log('Cleared!');
+      window.nav.push(component.component, {}, {
+        animate: false
+      });
+    })
   }
 }
 
diff --git a/ionic/components/app/test/sink/main.html b/ionic/components/app/test/sink/main.html
index 02b816d8c3..e84c5c0558 100644
--- a/ionic/components/app/test/sink/main.html
+++ b/ionic/components/app/test/sink/main.html
@@ -1,23 +1,16 @@
-<ion-aside [content]="content">
+<ion-aside #aside [content]="content">
   <ion-list inset>
     <div class="list-header">
       Ionic 2
     </div>
-    <ion-item>
-      Buttons
-    </ion-item>
-    <ion-item>
-      Lists
-    </ion-item>
-    <ion-item>
-      Modals
-    </ion-item>
-    <ion-item>
-      Action Menus
+    <ion-item *ng-for="#c of components" (^click)="openPage(aside, c)">
+      {{c.title}}
     </ion-item>
   </ion-list>
 </ion-aside>
 
+<ion-nav #content [initial]="firstPage"></ion-nav>
+<!--
 <ion-view #content>
   <ion-toolbar>
     <ion-title>Ionic Sink</ion-title>
@@ -27,3 +20,4 @@
   </ion-content>
 
 </ion-view>
+-->
diff --git a/ionic/components/app/test/sink/pages/action-menu.js b/ionic/components/app/test/sink/pages/action-menu.js
new file mode 100644
index 0000000000..ce07701d13
--- /dev/null
+++ b/ionic/components/app/test/sink/pages/action-menu.js
@@ -0,0 +1,55 @@
+import {NgFor} from 'angular2/angular2';
+import {Ancestor} from 'angular2/src/core/annotations_impl/visibility';
+import {Component, Directive} from 'angular2/src/core/annotations_impl/annotations';
+import {View} from 'angular2/src/core/annotations_impl/view';
+
+import {ActionMenu, NavbarTemplate, Navbar, NavController, Button, Content} from 'ionic/ionic';
+
+@Component({
+  selector: 'ion-view'
+})
+@View({
+  template: `
+  <ion-navbar *navbar><ion-title>Aciton Menu</ion-title></ion-navbar>
+
+  <ion-content class="padding">
+    <button primary (click)="openMenu()">Open Menu</button>
+  </ion-content>
+  `,
+  directives: [NavbarTemplate, Navbar, Content, Button]
+})
+export class ActionMenuPage {
+  constructor(nav: NavController) {
+    this.nav = nav;
+    window.nav = nav;
+  }
+
+  openMenu() {
+    console.log('Opening ActionMenu')
+
+    ActionMenu.open({
+      buttons: [
+        { text: '<b>Share</b> This' },
+        { text: 'Move' }
+      ],
+      destructiveText: 'Delete',
+      titleText: 'Modify your album',
+      cancelText: 'Cancel',
+      cancel: function() {
+        // add cancel code..
+        console.log('Canceled');
+      },
+      destructiveButtonClicked: () => {
+        console.log('Destructive clicked');
+      },
+      buttonClicked: function(index) {
+        console.log('Button clicked', index);
+        if(index == 1) { return false; }
+        return true;
+      }
+    }).then(actionMenu => {
+      this.actionMenu = actionMenu;
+    })
+  }
+
+}
diff --git a/ionic/components/app/test/sink/pages/button.js b/ionic/components/app/test/sink/pages/button.js
new file mode 100644
index 0000000000..86bbae6c7d
--- /dev/null
+++ b/ionic/components/app/test/sink/pages/button.js
@@ -0,0 +1,89 @@
+import {NgFor} from 'angular2/angular2';
+import {Ancestor} from 'angular2/src/core/annotations_impl/visibility';
+import {Component, Directive} from 'angular2/src/core/annotations_impl/annotations';
+import {View} from 'angular2/src/core/annotations_impl/view';
+
+import {NavbarTemplate, Navbar, NavController, Button, Content} from 'ionic/ionic';
+
+@Component({
+  selector: 'ion-view'
+})
+@View({
+  template: `
+  <ion-navbar *navbar><ion-title>Buttons</ion-title></ion-navbar>
+
+  <ion-content class="padding">
+
+    <h2>Buttons</h2>
+    <p>
+<div>
+  <a class="button" href="#">a (default)</a>
+  <button class="button">button (default)</button>
+  <button class="button hover">hover</button>
+  <button class="button activated">activated</button>
+</div>
+
+<div>
+  <a class="button button-primary" href="#">a.primary</a>
+  <button class="button button-primary">button.primary</button>
+  <button class="button button-primary hover">hover</button>
+  <button class="button button-primary activated">activated</button>
+</div>
+
+<div>
+  <a class="button button-secondary" href="#">a.secondary</a>
+  <button class="button button-secondary">button.secondary</button>
+  <button class="button button-secondary hover">hover</button>
+  <button class="button button-secondary activated">activated</button>
+</div>
+
+<div>
+  <a class="button button-danger" href="#">a.danger</a>
+  <button class="button button-danger">button.danger</button>
+  <button class="button button-danger hover">hover</button>
+  <button class="button button-danger activated">activated</button>
+</div>
+
+<div>
+  <a class="button button-light" href="#">a.light</a>
+  <button class="button button-light">button.light</button>
+  <button class="button button-light hover">hover</button>
+  <button class="button button-light activated">activated</button>
+</div>
+
+<div>
+  <a class="button button-stable" href="#">a.stable</a>
+  <button class="button button-stable">button.stable</button>
+  <button class="button button-stable hover">hover</button>
+  <button class="button button-stable activated">activated</button>
+</div>
+
+<div>
+  <a class="button button-dark" href="#">a.dark</a>
+  <button class="button button-dark">button.dark</button>
+  <button class="button button-dark hover">hover</button>
+  <button class="button button-dark activated">activated</button>
+</div>
+
+<h2>With Properties</h2>
+
+<div>
+  <button primary>button.primary</button>
+  <button secondary>button.secondary</button>
+  <button stable>button.stable</button>
+  <button light>button.light</button>
+  <button dark>button.dark</button>
+  <button danger>button.danger</button>
+</div>
+    </p>
+
+  </ion-content>
+  `,
+  directives: [NavbarTemplate, Navbar, Content, Button]
+})
+export class ButtonPage {
+  constructor(nav: NavController) {
+    this.nav = nav;
+    window.nav = nav;
+  }
+}
diff --git a/ionic/components/app/test/sink/pages/single.html b/ionic/components/app/test/sink/pages/single.html
deleted file mode 100644
index 2ccf94c4db..0000000000
--- a/ionic/components/app/test/sink/pages/single.html
+++ /dev/null
@@ -1,6 +0,0 @@
-<ion-navbar *navbar><ion-title>{{post.title}}</ion-title></ion-navbar>
-
-<ion-content>
-  <iframe style="width: 100%; height: 100%" src="{{post.url}}">
-  </iframe>
-</ion-content>
diff --git a/ionic/components/app/test/sink/pages/single.js b/ionic/components/app/test/sink/pages/single.js
deleted file mode 100644
index 1050740678..0000000000
--- a/ionic/components/app/test/sink/pages/single.js
+++ /dev/null
@@ -1,25 +0,0 @@
-import {NgFor} from 'angular2/angular2';
-import {Ancestor} from 'angular2/src/core/annotations_impl/visibility';
-import {Component, Directive} from 'angular2/src/core/annotations_impl/annotations';
-import {View} from 'angular2/src/core/annotations_impl/view';
-
-import {NavController, NavParams, NavbarTemplate, Navbar, Content, Nav, NavPane, List, Item} from 'ionic/ionic';
-
-import {HackerNews} from '../hn'
-
-
-@Component({ selector: 'ion-view' })
-@View({
-  templateUrl: 'pages/single.html',
-  directives: [NavbarTemplate, Navbar, Content, NgFor, List, Item]
-})
-export class HNSinglePost {
-  constructor(
-    nav: NavController,
-    params: NavParams
-  ) {
-    this.nav = nav;
-    this.post = params;
-    console.log('SINGLE', params);
-  }
-}
diff --git a/ionic/components/app/test/sink/pages/top.html b/ionic/components/app/test/sink/pages/top.html
deleted file mode 100644
index d025145ae2..0000000000
--- a/ionic/components/app/test/sink/pages/top.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<ion-navbar *navbar><ion-title>Top</ion-title></ion-navbar>
-
-<ion-content class="padding">
-
-  <ion-list inset>
-    <ion-item *ng-for="#story of stories" (^click)="openStory(story)">{{story.title}}</ion-item>
-  </ion-list>
-
-</ion-content>
diff --git a/ionic/components/app/test/sink/pages/top.js b/ionic/components/app/test/sink/pages/top.js
deleted file mode 100644
index f6a23423f8..0000000000
--- a/ionic/components/app/test/sink/pages/top.js
+++ /dev/null
@@ -1,93 +0,0 @@
-import {NgFor} from 'angular2/angular2';
-import {Ancestor} from 'angular2/src/core/annotations_impl/visibility';
-import {Component, Directive} from 'angular2/src/core/annotations_impl/annotations';
-import {View} from 'angular2/src/core/annotations_impl/view';
-
-import {NavController, NavbarTemplate, Navbar, Content, List, Item} from 'ionic/ionic';
-
-import {HackerNews} from '../hn';
-import {HNSinglePost} from './single';
-
-
-console.log('Angular directives', NgFor, Content, List, Item);
-
-@Component({
-  selector: 'story'
-})
-@View({
-  template: '<div class="hn-story"><content></content></div>'
-})
-export class Story {
-  constructor() {
-
-  }
-}
-
-@Component({
-  selector: 'ion-view'
-})
-@View({
-  templateUrl: 'pages/top.html',
-  directives: [NavbarTemplate, Navbar, Content, NgFor, List, Story, Item]
-})
-export class HNTopStories {
-  constructor(
-    nav: NavController
-  ) {
-    this.nav = nav;
-
-    this.stories = [
-      /*
-    {
-      by: "FatalLogic",
-      descendants: 77,
-      id: 9444675,
-      //kids: Array[26]
-      score: 464,
-      text: "",
-      time: 1430116925,
-      title: "Under Pressure",
-      type: "story",
-      url: "http://minusbat.livejournal.com/180556.html"
-    }*/
-    ];
-
-    var APIUrl = 'https://hacker-news.firebaseio.com/v0';
-
-    console.log('FIREBASE', window.Firebase);
-
-    this.fb = new window.Firebase(APIUrl);
-    this.fb.child('topstories').limitToFirst(20).once('value', (snapshot) => {
-
-      let items = snapshot.val();
-
-      console.log('Fetched', items.length, 'items');
-
-      for(var itemID of items) {
-
-        this.fb.child("item").child(itemID).on('value', (data) => {
-          console.log('GOT ITEM', data.val());
-          this.stories.push(data.val());
-        });
-      }
-    });
-
-    //doStuffEnd
-  }
-
-  openStory(story) {
-    console.log('Opening story', story);
-
-    this.nav.push(HNSinglePost, story);
-  }
-
-  /*
-  HackerNews.getTopStories((val) => {
-    new Promise((resolve, reject) => {
-      console.log('PROMISES!', val);
-      this.stories.push(val);
-      resolve();
-    });
-  });
-  */
-}
diff --git a/ionic/components/aside/aside.js b/ionic/components/aside/aside.js
index dd648e750b..0d47bbaa1d 100644
--- a/ionic/components/aside/aside.js
+++ b/ionic/components/aside/aside.js
@@ -53,6 +53,10 @@ export class Aside {
   }
 
   getContentElement() {
+    if(!this.content || !this.content.domElement) {
+      console.error('Aside: make sure to specify a content target using #var on the element');
+      return null;
+    }
     return this.content.domElement;
   }
 
@@ -87,6 +91,13 @@ export class Aside {
       })
     }
   }
+
+  open() {
+    return this.setOpen(true);
+  }
+  close() {
+    return this.setOpen(false);
+  }
 }
 
 new IonicComponent(Aside, {
diff --git a/ionic/components/nav/nav-base.js b/ionic/components/nav/nav-base.js
index c09884388a..70588dc4d9 100644
--- a/ionic/components/nav/nav-base.js
+++ b/ionic/components/nav/nav-base.js
@@ -31,6 +31,16 @@ export class NavBase {
     }
   }
 
+  clear() {
+    let pops = [];
+    for(let item of this.items) {
+      pops.push(this.pop({
+        animate: false
+      }));
+    }
+    return Promise.all(pops);
+  }
+
   push(Component, params = {}, opts = {}) {
     if (this.isTransitioning()) {
       return Promise.reject();
@@ -42,6 +52,10 @@ export class NavBase {
     // default the direction to "forward"
     opts.direction = opts.direction || 'forward';
 
+    if(opts.animate === false) {
+      opts.animation = 'none';
+    }
+
     // do not animate if this is the first in the stack
     if (!this.items.length) {
       opts.animation = 'none';
@@ -70,10 +84,14 @@ export class NavBase {
   }
 
   pop(opts = {}) {
-    if (this.isTransitioning() || this.items.length < 2) {
+    if (this.isTransitioning() || this.items.length < 1) {
       return Promise.reject();
     }
 
+    if(opts.animate === false) {
+      opts.animation = 'none';
+    }
+
     let resolve;
     let promise = new Promise(res => { resolve = res; });
 
@@ -86,14 +104,21 @@ export class NavBase {
     leavingItem.shouldDestroy = true;
 
     // the entering item is now the new last item
+    // Note: we might not have an entering item if this is the only
+    // item on the history stack.
     let enteringItem = this.getPrevious(leavingItem);
-    enteringItem.shouldDestroy = false;
+    if(enteringItem) {
+      enteringItem.shouldDestroy = false;
 
-    // start the transition
-    this.transition(enteringItem, leavingItem, opts).then(() => {
-      // transition completed, destroy the leaving item
+      // start the transition
+      this.transition(enteringItem, leavingItem, opts).then(() => {
+        // transition completed, destroy the leaving item
+        resolve();
+      });
+    } else {
+      this.transitionComplete();
       resolve();
-    });
+    }
 
     return promise;
   }
diff --git a/ionic/components/nav/nav-controller.js b/ionic/components/nav/nav-controller.js
index cc52653644..43bb4960e6 100644
--- a/ionic/components/nav/nav-controller.js
+++ b/ionic/components/nav/nav-controller.js
@@ -5,10 +5,23 @@ export class NavController {
     this._nav = nav;
   }
 
+  /**
+   * Clear the history stack.
+   */
+  clear() {
+    return this._nav.clear();
+  }
+
+  /**
+   * Push an ew component onto the history stack.
+   */
   push() {
     return this._nav.push.apply(this._nav, arguments);
   }
 
+  /**
+   * Pop the top most (visible) component off the history stack.
+   */
   pop() {
     return this._nav.pop.apply(this._nav, arguments);
   }