Get rid of all the library tags.

lib/src/util/stream_queue.dart

 // Copyright (c) 2015, 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.
 
 // TODO(nweiz): Get rid of this when https://codereview.chromium.org/1241723003/
 // lands.
-library test.util.forkable_stream_queue;
-
 import 'dart:async';
 import 'dart:collection';
 
 import "package:async/async.dart" hide ForkableStream, StreamQueue;
 
 import "forkable_stream.dart";
 
 /// An asynchronous pull-based interface for accessing stream events.
 ///
 /// Wraps a stream and makes individual events available on request.
@@ skipping 671 matching lines @@
         event.addTo(controller);
       }
 
       var fork = _streamQueue._sourceStream.fork();
       controller.addStream(fork, cancelOnError: false)
           .whenComplete(controller.close);
       _completer.setSourceStream(controller.stream);
     }
   }
 }