Revert 132856 - Aura/ash split: Remove hacks and get chrome linking without ash.

ui/aura/desktop/desktop_stacking_client.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_DESKTOP_DESKTOP_STACKING_CLIENT_H_
-#define UI_AURA_DESKTOP_DESKTOP_STACKING_CLIENT_H_
-
-#include "ui/aura/client/stacking_client.h"
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "ui/aura/aura_export.h"
-
-namespace aura {
-class Window;
-
-// A stacking client for the desktop; always sets the default parent to the
-// RootWindow of the passed in Window.
-class AURA_EXPORT DesktopStackingClient : public client::StackingClient {
- public:
-  DesktopStackingClient();
-  virtual ~DesktopStackingClient();
-
-  // Overridden from client::StackingClient:
-  virtual Window* GetDefaultParent(Window* window) OVERRIDE;
-
-  DISALLOW_COPY_AND_ASSIGN(DesktopStackingClient);
-};
-
-}  // namespace aura
-
-#endif  // UI_AURA_DESKTOP_DESKTOP_STACKING_CLIENT_H_