More status-updates to async-await related tests.

tests/language/await_for_cancel_test.dart

 // Copyright (c) 2014, 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 "dart:async";
 import "package:expect/expect.dart";
 import "package:async_helper/async_helper.dart";
 
 bool cancelled;
 
@@ skipping 33 matching lines @@
   } finally {
     Expect.isTrue(cancelled);
   }
 }
 
 test() async {
   await test1();
   await test2();
 }
 
-main() async {
+main() {
   asyncStart();
   test().then((_) {
     asyncEnd();
   });
 }
 
 
 // Create a stream that produces numbers [1, 2, ... ]
 StreamController infiniteStreamController() {
   StreamController controller;
@@ skipping 20 matching lines @@
       onListen: startTimer,
       onPause: stopTimer,
       onResume: startTimer,
       onCancel: () {
         cancelled = true;
         stopTimer();
       });
 
   return controller;
 }