Get rid of all the library tags.

lib/src/util/stream_channel.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.
 
-library test.stream_channel;
-
 import 'dart:async';
 
 /// An abstract class representing a two-way communication channel.
 ///
 /// Subclasses can mix in [StreamChannelMixin] to get default implementations of
 /// the various instance methods.
 abstract class StreamChannel<T> {
   /// The stream that emits values from the other endpoint.
   Stream<T> get stream;
 
@@ skipping 22 matching lines @@
 }
 
 /// A mixin that implements the instance methods of [StreamChannel] in terms of
 /// [stream] and [sink].
 abstract class StreamChannelMixin<T> implements StreamChannel<T> {
   void pipe(StreamChannel<T> other) {
     stream.pipe(other.sink);
     other.stream.pipe(sink);
   }
 }