This patch implements Chromium's Aura gesture recognizer in terms of utouch-grail and utouch-frame …

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_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
 #include "ui/aura/aura_export.h"
 #include "ui/aura/cursor.h"
 #include "ui/aura/focus_manager.h"
 #include "ui/aura/gestures/gesture_recognizer.h"
+#include "ui/aura/root_window_host.h"
 #include "ui/aura/window.h"
 #include "ui/base/events.h"
 #include "ui/gfx/compositor/compositor.h"
 #include "ui/gfx/compositor/compositor_observer.h"
 #include "ui/gfx/compositor/layer_animation_observer.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/point.h"
 
 namespace gfx {
 class Size;
 }
 
 namespace ui {
 class LayerAnimationSequence;
 class Transform;
 }
 
 namespace aura {
 
-class RootWindowHost;
 class RootWindowObserver;
 class KeyEvent;
 class MouseEvent;
 class ScreenAura;
 class StackingClient;
 class ScrollEvent;
 class TouchEvent;
 class GestureEvent;
 
 // RootWindow is responsible for hosting a set of windows.
@@ skipping 136 matching lines @@
   void SetGestureRecognizerForTesting(GestureRecognizer* gr);
 
   // Returns the accelerated widget from the RootWindowHost.
   gfx::AcceleratedWidget GetAcceleratedWidget();
 
 #if !defined(NDEBUG)
   // Toggles the host's full screen state.
   void ToggleFullScreen();
 #endif
 
+  // Accesses the native window handle living in the RootWindowHost instance
+  // associated with this instance.
+  NativeHandle GetNativeWindow() const;
+
   // Overridden from Window:
   virtual RootWindow* GetRootWindow() OVERRIDE;
   virtual void SetTransform(const ui::Transform& transform) OVERRIDE;
 
   // Overridden from ui::CompositorDelegate:
   virtual void ScheduleDraw() OVERRIDE;
 
   // Overridden from ui::CompositorObserver:
   virtual void OnCompositingEnded(ui::Compositor*) OVERRIDE;
 
@@ skipping 110 matching lines @@
   bool synthesize_mouse_move_;
   bool waiting_on_compositing_end_;
   bool draw_on_compositing_end_;
 
   DISALLOW_COPY_AND_ASSIGN(RootWindow);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_ROOT_WINDOW_H_