Eliminate ash::internal namespace

ash/wm/resize_shadow.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_RESIZE_SHADOW_H_
 #define ASH_WM_RESIZE_SHADOW_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 
 namespace aura {
 class Window;
 }
 namespace gfx {
 class Rect;
 }
 namespace ui {
 class Layer;
 }
 namespace wm {
 class ImageGrid;
 }
 
 namespace ash {
-namespace internal {
 
 // A class to render the resize edge effect when the user moves their mouse
 // over a sizing edge.  This is just a visual effect; the actual resize is
 // handled by the EventFilter.
 class ResizeShadow {
  public:
   ResizeShadow();
   ~ResizeShadow();
 
   // Initializes the resize effect layers for a given |window|.
@@ skipping 17 matching lines @@
   // Images for the shadow effect.
   scoped_ptr< ::wm::ImageGrid> image_grid_;
 
   // Hit test value from last call to ShowForHitTest().  Used to prevent
   // repeatedly triggering the same animations for the same hit.
   int last_hit_test_;
 
   DISALLOW_COPY_AND_ASSIGN(ResizeShadow);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_RESIZE_SHADOW_H_