catchErrors and waitForCompletion now based on runZonedExperimental.

tests/lib/async/catch_errors21_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 'dart:async';
 import 'dart:isolate';
+import 'catch_errors.dart';
 
 main() {
   // We keep a ReceivePort open until all tests are done. This way the VM will
   // hang if the callbacks are not invoked and the test will time out.
   var port = new ReceivePort();
   var events = [];
   var controller = new StreamController();
   // Test that stream errors, as a result of bad user-code (`map`) are correctly
   // caught by `catchErrors`. Note that the values are added outside both
   // `catchErrors`, but since the `listen` happens in the most nested
@@ skipping 13 matching lines @@
                                  "caught: 3",
                                  "caught: 4",
                                  "done",
                                 ],
                                 events);
               port.close();
             });
   [1, 2, 3, 4].forEach(controller.add);
   controller.close();
 }