Don't send touch move to renderer while scrolling

content/browser/renderer_host/input/immediate_input_router.h

Index: content/browser/renderer_host/input/immediate_input_router.h
diff --git a/content/browser/renderer_host/input/immediate_input_router.h b/content/browser/renderer_host/input/immediate_input_router.h
index 270ca3dc67e086230811e7079e299236e13b1225..0bfa19f111ee362f818e87c9695655617c596234 100644
--- a/content/browser/renderer_host/input/immediate_input_router.h
+++ b/content/browser/renderer_host/input/immediate_input_router.h
@@ -73,6 +73,8 @@ class CONTENT_EXPORT ImmediateInputRouter
   }
 
 private:
+  friend class ImmediateInputRouterTest;
+
   // TouchEventQueueClient
   virtual void OnTouchEventAck(const TouchEventWithLatencyInfo& event,
                                InputEventAckState ack_result) OVERRIDE;
@@ -127,6 +129,9 @@ private:
   void ProcessTouchAck(InputEventAckState ack_result,
                        const ui::LatencyInfo& latency_info);
 
+  void HandleGestureScroll(
+      const GestureEventWithLatencyInfo& gesture_event);
+
   int routing_id() const { return routing_id_; }
 
 
@@ -186,6 +191,10 @@ private:
   // not sent to the renderer.
   bool has_touch_handler_;
 
+  // Whether enabling the optimization that sending no touch move events to
+  // renderer while scrolling.
+  bool enable_no_touch_to_renderer_while_scrolling_;
+
   scoped_ptr<TouchEventQueue> touch_event_queue_;
   scoped_ptr<GestureEventFilter> gesture_event_filter_;