Properly forward queued touch events

content/browser/renderer_host/input/touch_event_queue.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_EVENT_QUEUE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_EVENT_QUEUE_H_
 
 #include <deque>
 #include <map>
 
@@ skipping 54 matching lines @@
     no_touch_move_to_renderer_ = value;
   }
 
  private:
   friend class MockRenderWidgetHost;
   friend class ImmediateInputRouterTest;
 
   CONTENT_EXPORT size_t GetQueueSize() const;
   CONTENT_EXPORT const TouchEventWithLatencyInfo& GetLatestEvent() const;
 
+  // Walks the queue, checking each event for |ShouldForwardToRenderer()|.
+  // If true, forwards the touch event and stops processing further events.
+  // If false, acks the event with |INPUT_EVENT_ACK_STATE_NO_CONSUMER_EXISTS|.
+  void TryForwardNextEventToRenderer();
+
   // Pops the touch-event from the top of the queue and sends it to the
   // TouchEventQueueClient. This reduces the size of the queue by one.
   void PopTouchEventToClient(InputEventAckState ack_result,
                              const ui::LatencyInfo& renderer_latency_info);
 
   bool ShouldForwardToRenderer(const WebKit::WebTouchEvent& event) const;
 
   // Handles touch event forwarding and ack'ed event dispatch.
   TouchEventQueueClient* client_;
 
@@ skipping 11 matching lines @@
   // is scrolling. This behaviour is currently enabled only on aura behind a
   // flag.
   bool no_touch_move_to_renderer_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchEventQueue);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_EVENT_QUEUE_H_