Add latency info to input events sent to RenderWidget.

content/browser/renderer_host/touchpad_tap_suppression_controller.h

 // Copyright (c) 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_TOUCHPAD_TAP_SUPPRESSION_CONTROLLER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_TOUCHPAD_TAP_SUPPRESSION_CONTROLLER_H_
 
 #include "base/memory/scoped_ptr.h"
+#include "cc/debug/latency_info.h"
 #include "content/browser/renderer_host/tap_suppression_controller_client.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 
 namespace content {
 
 class RenderWidgetHostImpl;
 class TapSuppressionController;
 
 // Controls the suppression of touchpad taps immediately following the dispatch
 // of a GestureFlingCancel event.
 class TouchpadTapSuppressionController : public TapSuppressionControllerClient {
  public:
   explicit TouchpadTapSuppressionController(RenderWidgetHostImpl* rwhv);
   virtual ~TouchpadTapSuppressionController();
 
   // Should be called on arrival of GestureFlingCancel events.
   void GestureFlingCancel();
 
   // Should be called on arrival of ACK for a GestureFlingCancel event.
   // |processed| is true if the GestureFlingCancel successfully stopped a fling.
   void GestureFlingCancelAck(bool processed);
 
   // Should be called on arrival of MouseDown events. Returns true if the caller
   // should stop normal handling of the MouseDown. In this case, the caller is
   // responsible for saving the event for later use, if needed.
-  bool ShouldDeferMouseDown(const WebKit::WebMouseEvent& event);
+  bool ShouldDeferMouseDown(const WebKit::WebMouseEvent& event,
+                            const cc::LatencyInfo& latency_info);
 
   // Should be called on arrival of MouseUp events. Returns true if the caller
   // should stop normal handling of the MouseUp.
   bool ShouldSuppressMouseUp();
 
  private:
   friend class MockRenderWidgetHost;
 
   // TapSuppressionControllerClient implementation.
   virtual int MaxCancelToDownTimeInMs() OVERRIDE;
   virtual int MaxTapGapTimeInMs() OVERRIDE;
   virtual void DropStashedTapDown() OVERRIDE;
   virtual void ForwardStashedTapDownForDeferral() OVERRIDE;
   virtual void ForwardStashedTapDownSkipDeferral() OVERRIDE;
 
   RenderWidgetHostImpl* render_widget_host_;
   WebKit::WebMouseEvent stashed_mouse_down_;
+  cc::LatencyInfo stashed_latency_info_;
 
   // The core controller of tap suppression.
   scoped_ptr<TapSuppressionController> controller_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchpadTapSuppressionController);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_TOUCHPAD_TAP_SUPPRESSION_CONTROLLER_H_