Getting RenderWidgetHostViewWin ready for a GestureRecognizer.

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/ref_counted.h"
@@ skipping 279 matching lines @@
 
   // Overridden from Window:
   virtual bool CanFocus() const OVERRIDE;
   virtual bool CanReceiveEvents() const OVERRIDE;
   virtual internal::FocusManager* GetFocusManager() OVERRIDE;
 
   // Overridden from ui::GestureEventHelper.
   virtual ui::GestureEvent* CreateGestureEvent(ui::EventType type,
       const gfx::Point& location,
       int flags,
-      const base::Time time,
+      const base::Time& time,

[sky, 2012/05/04 15:36:52]

As Time and TimeDelta are primitive types we don't pass them by reference.

       float param_first,
       float param_second,
       unsigned int touch_id_bitfield) OVERRIDE;
 
   virtual ui::TouchEvent* CreateTouchEvent(ui::EventType type,
                                            const gfx::Point& location,
                                            int touch_id,
-                                           base::TimeDelta time_stamp) OVERRIDE;
+                                           const base::TimeDelta& time_stamp) OVERRIDE;
 
   virtual bool DispatchLongPressGestureEvent(ui::GestureEvent* event) OVERRIDE;
   virtual bool DispatchCancelTouchEvent(ui::TouchEvent* event) OVERRIDE;
 
   // Overridden from ui::LayerAnimationObserver:
   virtual void OnLayerAnimationEnded(
       ui::LayerAnimationSequence* animation) OVERRIDE;
   virtual void OnLayerAnimationScheduled(
       ui::LayerAnimationSequence* animation) OVERRIDE;
   virtual void OnLayerAnimationAborted(
@@ skipping 85 matching lines @@
   bool draw_on_compositor_unlock_;
 
   int draw_trace_count_;
 
   DISALLOW_COPY_AND_ASSIGN(RootWindow);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_ROOT_WINDOW_H_