catchErrors and waitForCompletion now based on runZonedExperimental.

tests/lib/async/catch_errors26_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 = [];
   StreamController controller;
   Stream stream;
   // Test `StreamController.broadcast` streams. Note that the nested listener
   // doesn't see the error, but the outer one does.
@@ skipping 24 matching lines @@
                                  "stream 101",
                                  "stream2 1",
                                  "stream2 error 2",
                                  "outer: 2",
                                  "inner done",
                                 ],
                                 events);
               port.close();
             });
 }