chore: upgrade to new Zone.js API v0.6.2

BREAKING CHANGE

Removed deprecated API from NgZone
- `NgZone.overrideOnTurnStart`
- `NgZone.overrideOnTurnDone`
- `NgZone.overrideOnEventDone`
- `NgZone.overrideOnErrorHandler`

Rename NgZone API
- `NgZone.onTurnStart` => `NgZone.onUnstable`
- `NgZone.onTurnDone` => `NgZone.onMicrotaskEmpty`
- `NgZone.onEventDone` => `NgZone.onStable`

Closes #7345

modules/angular2/test/common/pipes/async_pipe_spec.ts

@@ -93,7 +93,7 @@ export function main() {
              TimerWrapper.setTimeout(() => {
                expect(ref.spy('markForCheck')).toHaveBeenCalled();
                async.done();
-             }, 0)
+             }, 10)
            }));
       });
 
@@ -121,7 +121,7 @@ export function main() {
       var completer: PromiseCompleter<any>;
       var ref: SpyChangeDetectorRef;
       // adds longer timers for passing tests in IE
-      var timer = (!isBlank(DOM) && browserDetection.isIE) ? 50 : 0;
+      var timer = (!isBlank(DOM) && browserDetection.isIE) ? 50 : 10;
 
       beforeEach(() => {
         completer = PromiseWrapper.completer();
@@ -174,11 +174,12 @@ export function main() {
 
         it("should request a change detection check upon receiving a new value",
            inject([AsyncTestCompleter], (async) => {
+             var markForCheck = ref.spy('markForCheck');
              pipe.transform(completer.promise);
              completer.resolve(message);
 
              TimerWrapper.setTimeout(() => {
-               expect(ref.spy('markForCheck')).toHaveBeenCalled();
+               expect(markForCheck).toHaveBeenCalled();
                async.done();
              }, timer)
            }));