Fix flaky stream_controller_async_test.

tests/lib/async/stream_controller_async_test.dart

Index: tests/lib/async/stream_controller_async_test.dart
diff --git a/tests/lib/async/stream_controller_async_test.dart b/tests/lib/async/stream_controller_async_test.dart
index ecc647481b64b7939571cda8f06f9afdee317de5..3a2801642971261c3046dd971284fe006a693833 100644
--- a/tests/lib/async/stream_controller_async_test.dart
+++ b/tests/lib/async/stream_controller_async_test.dart
@@ -664,15 +664,7 @@ void testSink({bool sync, bool broadcast, bool asBroadcast}) {
             // the done event to the asBroadcastStream controller, which is

[floitsch, 2013/10/16 11:02:04]

comment doesn't seem relevant anymore.

[Lasse Reichstein Nielsen, 2013/10/16 11:27:47]

It's still relevant, but I reworded it a little.

             // before the final listener gets the event.
             // Wait for the pause to end before testing the events.
-            dynamic executeWhenPauseIsDone(Function f) {
-              if (!pauseIsDone) {
-                return new Future.delayed(const Duration(milliseconds: 50), () {
-                  return executeWhenPauseIsDone(f);
-                });
-              }
-              return f();
-            }
-            return executeWhenPauseIsDone(() {
+            actual.onDone(() {
               Expect.listEquals(expected.events, actual.events);
               done();
             });