catchErrors and waitForCompletion now based on runZonedExperimental.

tests/lib/async/catch_errors22_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 = [];
   bool onDoneWasCalled = false;
   var controller = new StreamController();
   // Test that streams that are never closed keep the `catchError` alive.
   catchErrors(() {
@@ skipping 13 matching lines @@
     Expect.isFalse(onDoneWasCalled);
     Expect.listEquals(["caught: 1",
                        "caught: 2",
                        "caught: 3",
                        "caught: 4",
                       ],
                       events);
     port.close();
   });
 }