Roll to pickup pool changes

packages/barback/lib/src/utils/stream_pool.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.
 
 library barback.utils.stream_pool;
 
 import 'dart:async';
 
 /// A pool of streams whose events are unified and emitted through a central
 /// stream.
@@ skipping 27 matching lines @@
       : _controller = new StreamController<T>.broadcast(sync: true);
 
   /// Adds [stream] as a member of this pool.
   ///
   /// Any events from [stream] will be emitted through [this.stream]. If
   /// [stream] is sync, they'll be emitted synchronously; if [stream] is async,
   /// they'll be emitted asynchronously.
   void add(Stream<T> stream) {
     if (_subscriptions.containsKey(stream)) return;
     _subscriptions[stream] = stream.listen(_controller.add,
-        onError: _controller.addError,
-        onDone: () => remove(stream));
+        onError: _controller.addError, onDone: () => remove(stream));
   }
 
   /// Removes [stream] as a member of this pool.
   void remove(Stream<T> stream) {
     var subscription = _subscriptions.remove(stream);
     if (subscription != null) subscription.cancel();
   }
 
   /// Removes all streams from this pool and closes [stream].
   void close() {
     for (var subscription in _subscriptions.values) {
       subscription.cancel();
     }
     _subscriptions.clear();
     _controller.close();
   }
 }