Rename runAsync to scheduleMicrotask.

tests/lib/async/stream_event_transformed_test.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:expect/expect.dart';
 import 'package:async_helper/async_helper.dart';
 import 'dart:async';
 import 'event_helper.dart';
 
 
@@ skipping 137 matching lines @@
       }, onDone: () {
         Expect.listEquals(["error2", stackTrace, "future3", "future1"], events);
         asyncEnd();
       });
     Timer.run(() {
       completer2.complete("error2");
       Timer.run(() {
         completer3.complete("future3");
         Timer.run(() {
           completer1.complete("future1");
-          runAsync(closeCompleter.complete);
+          scheduleMicrotask(closeCompleter.complete);
         });
       });
     });
   }
 
   {
     // Test that the output sink of the transformer can be used asynchronously
     // and that events are paused if necessary.
     asyncStart();
     var controller;
@@ skipping 36 matching lines @@
           Expect.listEquals(["error2", stackTrace], events);
           subscription.pause();
           completer3.complete("future3");
           Timer.run(() {
             subscription.resume();
             Timer.run(() {
               Expect.listEquals(["error2", stackTrace, "future3"], events);
               subscription.pause();
               completer1.complete("future1");
               subscription.resume();
-              runAsync(closeCompleter.complete);
+              scheduleMicrotask(closeCompleter.complete);
             });
           });
         });
       });
     });
   }
 
   {
     // Test that the output sink of the transformer reports errors when the
     // stream is already closed.
@@ skipping 78 matching lines @@
     new Stream.fromIterable([1, 2, 3])
       .transform(new SinkTransformer<int, String>(
           (sink) => new TypeChangingSink(sink)))
       .toList()
       .then((list) {
         Expect.listEquals(["1", "2", "3"], list);
         asyncEnd();
       });
   }
 }