| Index: sdk/lib/async/zone.dart | 
| diff --git a/sdk/lib/async/zone.dart b/sdk/lib/async/zone.dart | 
| index 2520f4d73ba9bad0b19be3ce0910deb2269816c9..d84f01bc834586880746e77e77a2727447c55970 100644 | 
| --- a/sdk/lib/async/zone.dart | 
| +++ b/sdk/lib/async/zone.dart | 
| @@ -958,7 +958,7 @@ void _rootScheduleMicrotask(Zone self, ZoneDelegate parent, Zone zone, f()) { | 
| // Use root zone as event zone if the function is already bound. | 
| zone = _ROOT_ZONE; | 
| } | 
| -  _scheduleAsyncCallback(new _AsyncCallbackEntry(f, zone)); | 
| +  _scheduleAsyncCallback(f); | 
| } | 
|  | 
| Timer _rootCreateTimer(Zone self, ZoneDelegate parent, Zone zone, | 
|  |