Add support for reposting the ET_GESTURE_TAP_DOWN gesture event to the RootWindow and in the

ui/aura/root_window.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 UI_AURA_ROOT_WINDOW_H_
 #define UI_AURA_ROOT_WINDOW_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 80 matching lines @@
   // Shows the root window host.
   void ShowRootWindow();
 
   // Hides the root window host.
   void HideRootWindow();
 
   // Stop listening events in preparation for shutdown.
   void PrepareForShutdown();
 
   // Repost event for re-processing. Used when exiting context menus.
+  // We only support the ET_MOUSE_PRESSED and ET_GESTURE_TAP_DOWN event
+  // types.
   void RepostEvent(const ui::LocatedEvent& event);
 
   RootWindowHostDelegate* AsRootWindowHostDelegate();
 
   // Gets/sets the size of the host window.
   void SetHostSize(const gfx::Size& size_in_pixel);
   gfx::Size GetHostSize() const;
 
   // Sets the bounds of the host window.
   void SetHostBounds(const gfx::Rect& size_in_pizel);
@@ skipping 280 matching lines @@
   // Posts a task to send synthesized mouse move event if there
   // is no a pending task.
   void PostMouseMoveEventAfterWindowChange();
 
   // Creates and dispatches synthesized mouse move event using the
   // current mouse location.
   void SynthesizeMouseMoveEvent();
 
   gfx::Transform GetInverseRootTransform() const;
 
+  // Reposts the gesture event to the Window which is a target for the event
+  // passed in.
+  bool DispatchGestureEventRepost(ui::GestureEvent* event);

[sadrul, 2013/08/23 03:16:03]

I would move this up, just below DispatchTouchEventImpl()

+
   scoped_ptr<ui::Compositor> compositor_;
 
   scoped_ptr<RootWindowHost> host_;
 
   // Used to schedule painting.
   base::WeakPtrFactory<RootWindow> schedule_paint_factory_;
 
   // Use to post mouse move event.
   base::WeakPtrFactory<RootWindow> event_factory_;
 
@@ skipping 33 matching lines @@
   scoped_ptr<ui::ViewProp> prop_;
 
   scoped_ptr<RootWindowTransformer> transformer_;
 
   DISALLOW_COPY_AND_ASSIGN(RootWindow);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_ROOT_WINDOW_H_