Remove StreamController.broadcast.

utils/pub/utils.dart

 // Copyright (c) 2012, 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.
 
 /// Generic utility functions. Stuff that should possibly be in core.
 library utils;
 
 import 'dart:async';
 import 'dart:crypto';
 import 'dart:isolate';
@@ skipping 161 matching lines @@
     completer.completeError(e.error, e.stackTrace);
   }, onDone: () {
     completer.completeError(new StateError("No elements"));
   }, unsubscribeOnError: true);
   return completer.future;
 }
 
 /// Returns a wrapped version of [stream] along with a [StreamSubscription] that
 /// can be used to control the wrapped stream.
 Pair<Stream, StreamSubscription> streamWithSubscription(Stream stream) {
-  var controller = stream.isBroadcast ?
-      new StreamController.broadcast() :
-      new StreamController();
+  var controller = new StreamController();
+  var controllerStream = stream.isBroadcast ?
+      controller.stream.asBroadcastStream() :
+      controller.stream;
   var subscription = stream.listen(controller.add,
       onError: controller.addError,
       onDone: controller.close);
-  return new Pair<Stream, StreamSubscription>(controller.stream, subscription);
+  return new Pair<Stream, StreamSubscription>(controllerStream, subscription);
 }
 
 // TODO(nweiz): remove this when issue 7787 is fixed.
 /// Creates two single-subscription [Stream]s that each emit all values and
 /// errors from [stream]. This is useful if [stream] is single-subscription but
 /// multiple subscribers are necessary.
 Pair<Stream, Stream> tee(Stream stream) {
   var controller1 = new StreamController();
   var controller2 = new StreamController();
   stream.listen((value) {
@@ skipping 151 matching lines @@
         .then((resolved) => new Pair(key, resolved)));
   });
   return Future.wait(pairs).then((resolvedPairs) {
     var map = {};
     for (var pair in resolvedPairs) {
       map[pair.first] = pair.last;
     }
     return map;
   });
 }