Remove StreamController.broadcast.

sdk/lib/async/stream_controller.dart

Index: sdk/lib/async/stream_controller.dart
diff --git a/sdk/lib/async/stream_controller.dart b/sdk/lib/async/stream_controller.dart
index 24a9999b654b0c1a29700d3ea9e1b4155dd9e140..6fcc53746f8eada82fef6f84e6e12646f7e0c441 100644
--- a/sdk/lib/async/stream_controller.dart
+++ b/sdk/lib/async/stream_controller.dart
@@ -50,22 +50,6 @@ class StreamController<T> extends EventSink<T> {
   final _StreamImpl<T> stream;
 
   /**
-   * A controller with a broadcast [stream]..
-   *
-   * The [onPauseStateChange] function is called when the stream becomes
-   * paused or resumes after being paused. The current pause state can
-   * be read from [isPaused]. Ignored if [:null:].
-   *
-   * The [onSubscriptionStateChange] function is called when the stream
-   * receives its first listener or loses its last. The current subscription
-   * state can be read from [hasListener]. Ignored if [:null:].
-   */
-  StreamController.broadcast({void onPauseStateChange(),
-                              void onSubscriptionStateChange()})
-      : stream = new _MultiControllerStream<T>(onSubscriptionStateChange,
-                                               onPauseStateChange);
-
-  /**
    * A controller with a [stream] that supports only one single subscriber.
    *
    * The controller will buffer all incoming events until the subscriber is
@@ -141,33 +125,6 @@ class StreamController<T> extends EventSink<T> {
 
 typedef void _NotificationHandler();
 
-class _MultiControllerStream<T> extends _MultiStreamImpl<T> {
-  _NotificationHandler _subscriptionHandler;
-  _NotificationHandler _pauseHandler;
-
-  _MultiControllerStream(this._subscriptionHandler, this._pauseHandler);
-
-  void _onSubscriptionStateChange() {
-    if (_subscriptionHandler != null) {
-      try {
-        _subscriptionHandler();
-      } catch (e, s) {
-        new AsyncError(e, s).throwDelayed();
-      }
-    }
-  }
-
-  void _onPauseStateChange() {
-    if (_pauseHandler != null) {
-      try {
-        _pauseHandler();
-      } catch (e, s) {
-        new AsyncError(e, s).throwDelayed();
-      }
-    }
-  }
-}
-
 class _SingleControllerStream<T> extends _SingleStreamImpl<T> {
   _NotificationHandler _subscriptionHandler;
   _NotificationHandler _pauseHandler;