Add type info to fix analyzer failures for 1.23.0-dev.5.0

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.
 import 'dart:async';
 import 'dart:collection';
 
 import "package:async/async.dart" hide ForkableStream, StreamQueue;
@@ skipping 470 matching lines @@
     _completer.complete(_eventsToSkip);
   }
 }
 
 /// Request for a [StreamQueue.take] call.
 class _TakeRequest<T> implements _EventRequest {
   /// Completer for the future returned by the take call.
   final _completer = new Completer<List<T>>();
 
   /// List collecting events until enough have been seen.
-  final List _list = <T>[];
+  final List<T> _list = <T>[];

[nweiz, 2017/03/10 21:24:34]

Just make this "final _list".

[keertip, 2017/03/10 21:30:37]

Done.

 
   /// Number of events to capture.
   ///
   /// The request [isComplete] when the length of [_list] reaches
   /// this value.
   final int _eventsToTake;
 
   _TakeRequest(this._eventsToTake);
 
   /// The future completed when the correct number of events have been captured.
@@ skipping 186 matching lines @@
         event.addTo(controller);
       }
 
       var fork = _streamQueue._sourceStream.fork();
       controller.addStream(fork, cancelOnError: false)
           .whenComplete(controller.close);
       _completer.setSourceStream(controller.stream);
     }
   }
 }