Remove StreamController.broadcast.

tests/lib/async/stream_state_helper.dart

Index: tests/lib/async/stream_state_helper.dart
diff --git a/tests/lib/async/stream_state_helper.dart b/tests/lib/async/stream_state_helper.dart
index b982d9d23be4e82fd13fec277e913907f31fbeac..a2881fe9b3aa0adacd7ed6f4683bd544bc184a70 100644
--- a/tests/lib/async/stream_state_helper.dart
+++ b/tests/lib/async/stream_state_helper.dart
@@ -10,21 +10,21 @@ import "dart:collection";
 
 class StreamProtocolTest {
   StreamController _controller;
+  Stream _controllerStream;
   StreamSubscription _subscription;
   List<Event> _expectations = new List<Event>();
   int _nextExpectationIndex = 0;
   Function _onComplete;
 
   StreamProtocolTest([bool broadcast = false]) {
+    _controller = new StreamController(
+         onPauseStateChange: _onPause,
+         onSubscriptionStateChange: _onSubcription);
+    // TODO(lrn): Make it work with multiple subscribers too.
     if (broadcast) {
-     _controller = new StreamController.broadcast(
-          onPauseStateChange: _onPause,
-          onSubscriptionStateChange: _onSubcription);
-     // TODO(lrn): Make it work with multiple subscribers too.
+      _controllerStream = _controller.stream.asBroadcastStream();
     } else {
-     _controller = new StreamController(
-          onPauseStateChange: _onPause,
-          onSubscriptionStateChange: _onSubcription);
+      _controllerStream = _controller.stream;
     }
     _onComplete = expectAsync0((){
       _onComplete = null;  // Being null marks the test to be complete.
@@ -40,11 +40,11 @@ class StreamProtocolTest {
     // TODO(lrn): Handle more subscriptions (e.g., a subscription-id
     // per subscription, and an id on event _expectations).
     if (_subscription != null) throw new StateError("Already subscribed");
-    _subscription = _controller.stream.listen(_onData,
-                                              onError: _onError,
-                                              onDone: _onDone,
-                                              unsubscribeOnError:
-                                                  unsubscribeOnError);
+    _subscription = _controllerStream.listen(_onData,
+                                             onError: _onError,
+                                             onDone: _onDone,
+                                             unsubscribeOnError:
+                                                 unsubscribeOnError);
   }
 
   void pause([Future resumeSignal]) {