Update to latest analyzer

tool/input_sdk/lib/async/stream_controller.dart

Index: tool/input_sdk/lib/async/stream_controller.dart
diff --git a/tool/input_sdk/lib/async/stream_controller.dart b/tool/input_sdk/lib/async/stream_controller.dart
index 6ad3e8a0bb772af3892e32bb7c48971caede9823..0d6ce2c32c68e0025c5768315e70b422f9cd2dba 100644
--- a/tool/input_sdk/lib/async/stream_controller.dart
+++ b/tool/input_sdk/lib/async/stream_controller.dart
@@ -81,8 +81,8 @@ abstract class StreamController<T> implements StreamSink<T> {
     if (onListen == null && onPause == null &&
         onResume == null && onCancel == null) {
       return sync
-          ? new _NoCallbackSyncStreamController/*<T>*/()
-          : new _NoCallbackAsyncStreamController/*<T>*/();
+          ? new _NoCallbackSyncStreamController<T>()
+          : new _NoCallbackAsyncStreamController<T>();
     }
     return sync
          ? new _SyncStreamController<T>(onListen, onPause, onResume, onCancel)
@@ -650,11 +650,11 @@ abstract class _NoCallbacks {
   _NotificationHandler get _onCancel => null;
 }
 
-class _NoCallbackAsyncStreamController/*<T>*/ = _StreamController/*<T>*/
-       with _AsyncStreamControllerDispatch/*<T>*/, _NoCallbacks;
+class _NoCallbackAsyncStreamController<T> = _StreamController<T>
+       with _AsyncStreamControllerDispatch<T>, _NoCallbacks;
 
-class _NoCallbackSyncStreamController/*<T>*/ = _StreamController/*<T>*/
-       with _SyncStreamControllerDispatch/*<T>*/, _NoCallbacks;
+class _NoCallbackSyncStreamController<T> = _StreamController<T>
+       with _SyncStreamControllerDispatch<T>, _NoCallbacks;
 
 typedef _NotificationHandler();