Fix timer tests: timer tests were not using expectAsync to wait for

tests/isolate/timer_not_available_test.dart

 // Copyright (c) 2011, 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.
 
 #library('timer_not_available');
 
 #import("dart:isolate");
 
 main() {
   bool failed = false;
   try {
     new Timer(0, (_) { });
   } on UnsupportedOperationException catch (e) {
+    print(e);

[Siggi Cherem (dart-lang), 2012/10/08 21:50:07]

is this needed? or just debugging code?

[justinfagnani, 2012/10/08 22:12:48]

removed

     failed = true;
   }
   Expect.isTrue(failed);
   failed = false;
   try {
     var t = new Timer.repeating(10, (_) { });
     t.cancel();
   } on UnsupportedOperationException catch (e) {
+    print(e);
     failed = true;
   }
   Expect.isTrue(failed);
 }