Change singleSubscription/multiSubscription to normal/broadcast.

utils/pub/error_group.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 error_group;
 
 import 'dart:async';
 
 /// An [ErrorGroup] entangles the errors of multiple [Future]s and [Stream]s
 /// with one another. This allows APIs to expose multiple [Future]s and
@@ skipping 215 matching lines @@
   /// The [StreamSubscription] that connects the wrapped [Stream] to
   /// [_controller].
   StreamSubscription _subscription;
 
   /// Whether [this] has any listeners.
   bool get _hasListeners => _controller.hasSubscribers;
 
   /// Creates a new [_ErrorGroupFuture] that's a child of [_group] and wraps
   /// [inner].
   _ErrorGroupStream(this._group, Stream inner)
-    : _controller = inner.isSingleSubscription ?
-          new StreamController() :
-          new StreamController.multiSubscription() {
+    : _controller = inner.isBroadcast ?
+          new StreamController.broadcast() :
+          new StreamController() {
     _subscription = inner.listen(_controller.add,
         onError: (e) => _group._signalError(e),
         onDone: () {
           _isDone = true;
           _group._signalStreamComplete(this);
           _controller.close();
         });
   }
 
   StreamSubscription listen(void onData(value),
@@ skipping 10 matching lines @@
   void _signalError(AsyncError e) {
     if (_isDone) return;
     _subscription.cancel();
     // Call these asynchronously to work around issue 7913.
     new Future.immediate(null).then((_) {
       _controller.signalError(e.error, e.stackTrace);
       _controller.close();
     });
   }
 }