aura: Gesture event plumbing (skeleton).

ash/accelerators/accelerator_filter.h

Index: ash/accelerators/accelerator_filter.h
diff --git a/ash/accelerators/accelerator_filter.h b/ash/accelerators/accelerator_filter.h
index 56ebfb1d2d15301598a159931ca9177aa7525b1b..8e6883b40cf3c8bff97aa6511d98468a979dc2d7 100644
--- a/ash/accelerators/accelerator_filter.h
+++ b/ash/accelerators/accelerator_filter.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -28,6 +28,9 @@ class ASH_EXPORT AcceleratorFilter : public aura::EventFilter {
                                    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(AcceleratorFilter);