aura: Gesture event plumbing (skeleton).

ash/wm/window_modality_controller.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 ASH_WM_WINDOW_MODALITY_CONTROLLER_H_
 #define ASH_WM_WINDOW_MODALITY_CONTROLLER_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "ui/aura/event_filter.h"
@@ skipping 13 matching lines @@
   // does not have any window-modal transient children.
   static aura::Window* GetWindowModalTransient(aura::Window* window);
 
   // Overridden from aura::EventFilter:
   virtual bool PreHandleKeyEvent(aura::Window* target,
                                  aura::KeyEvent* event) OVERRIDE;
   virtual bool PreHandleMouseEvent(aura::Window* target,
                                    aura::MouseEvent* event) OVERRIDE;
   virtual ui::TouchStatus PreHandleTouchEvent(aura::Window* target,
                                               aura::TouchEvent* event) OVERRIDE;
+  virtual ui::GestureStatus PreHandleGestureEvent(
+      aura::Window* target,
+      aura::GestureEvent* event) OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WindowModalityController);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WINDOW_MODALITY_CONTROLLER_H_