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/public_api_spec.ts

@@ -162,7 +162,6 @@ var NG_CORE = [
   'DirectiveResolver',
   'DynamicComponentLoader',
   'ElementRef',
-  'ErrorHandlingFn:dart',
   'Output',
   'EmbeddedViewRef',
   'EventEmitter',
@@ -244,7 +243,6 @@ var NG_CORE = [
   'ViewResolver',
   'WrappedException',
   'WrappedValue',
-  'ZeroArgFunction:dart',
   'asNativeElements',
   'bind',
   'provide',