Defer GestureTapDown events briefly.

content/browser/renderer_host/render_widget_host_impl.h

 // Copyright (c) 2012 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_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <deque>
 #include <string>
 #include <vector>
@@ skipping 214 matching lines @@
 
   // Stops all existing hang monitor timeouts and assumes the renderer is
   // responsive.
   void StopHangMonitorTimeout();
 
   // Forwards the given message to the renderer. These are called by the view
   // when it has received a message.
   void ForwardGestureEvent(const WebKit::WebGestureEvent& gesture_event);
   virtual void ForwardTouchEvent(const WebKit::WebTouchEvent& touch_event);
 
+  // Forwards the given event immediately to the renderer.
+  void ForwardGestureEventImmediately(
+      const WebKit::WebGestureEvent& gesture_event);
+
 #if defined(TOOLKIT_GTK)
   // Give key press listeners a chance to handle this key press. This allow
   // widgets that don't have focus to still handle key presses.
   bool KeyPressListenersHandleEvent(GdkEventKey* event);
 #endif  // defined(TOOLKIT_GTK)
 
   void CancelUpdateTextDirection();
 
   // Called when a mouse click/gesture tap activates the renderer.
   virtual void OnPointerEventActivate();
@@ skipping 538 matching lines @@
   scoped_ptr<SmoothScrollGesture> active_smooth_scroll_gesture_;
 
   scoped_ptr<GestureEventFilter> gesture_event_filter_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_