Add resetProfiles method

tns-core-modules/profiling/profiling.d.ts

@@ -67,6 +67,11 @@ export declare function profile(name?: string): MethodDecorator;
  */
 export declare function dumpProfiles(): void;
 
+/**
+ * Resets the timers for all methods instrumented with profile decorator.
+ */
+export function resetProfiles(): void;
+
 /**
  * Starts android cpu profiling.
  * @param name Name of the cpu profiling session.

tns-core-modules/profiling/profiling.ts

@@ -16,7 +16,7 @@ const timers: { [ index: string ]: TimerInfo } = {};
 const anyGlobal = <any>global;
 const profileNames: string[] = [];
 
-let ENABLED = true;
+let ENABLED = false;
 let nativeTimeFunc: () => number;
 
 export function enable() {
@@ -167,6 +167,20 @@ export function dumpProfiles(): void {
     });
 }
 
+export function resetProfiles(): void {
+    profileNames.forEach(function (name) {
+        const info = timers[name];
+
+        if (info) {
+            if (!info.isRunning) {
+                timers[name] = undefined;
+            } else {
+                console.log("---- timer with name [" + name + "] is currently running and won't be reset");
+            }
+        }
+    });
+}
+
 export function startCPUProfile(name: string) {
     if (!ENABLED) {
         return;