Initial prototype of Frame + Page + Navigation.

ui/pages/page.d.ts

@@ -0,0 +1,25 @@
+declare module "ui/pages" {
+    import view = require("ui/core/view");
+    import frame = require("ui/frame");
+
+    export class Page extends view.View {
+        contentView: view.View;
+        android: AndroidPage;
+
+        /**
+        * Gets the Frame object controlling this instance.
+        */
+        frame: frame.Frame;
+
+        onNavigatedTo(context: any): void;
+        onNavigatedFrom(): void;
+
+        onLoaded: () => void;
+    }
+
+    export interface AndroidPage {
+        activity: android.app.Activity;
+        activityBody: any;
+        getActivityExtends(): any;
+    }
+}