Test fixes for dartium

tests/lib/async/merge_stream_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.
 
 // Test merging streams.
+library merge_stream_test;
+
 import "dart:async";
 import '../../../pkg/unittest/lib/unittest.dart';
 import 'event_helper.dart';
 
 testSupercedeStream() {
   { // Simple case of superceding lower priority streams.
     StreamController s1 = new StreamController();
     StreamController s2 = new StreamController();
     StreamController s3 = new StreamController();
     Stream merge = new Stream.superceding([s1.stream, s2.stream, s3.stream]);
@@ skipping 147 matching lines @@
     actual.onDone(expectAsync0(() {
       Expect.listEquals(expected.events, actual.events);
     }));
   });
 }
 
 main() {
   testSupercedeStream();
   testCyclicStream();
 }