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 864d3872aa9123430c5b3d50a1c283991b2378a5..b5a1e5d8fab96bfe3d53e20767bdd071039cce46 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;
@@ -124,6 +126,9 @@ private:
   // renderer.
   void ProcessTouchAck(InputEventAckState ack_result);
 
+  void HandleGestureScroll(
+      const GestureEventWithLatencyInfo& gesture_event);
+
   int routing_id() const { return routing_id_; }
 
 
@@ -183,6 +188,10 @@ 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_;