Move some more files into ash... this time seed the window manager dir.

ui/aura_shell/always_on_top_controller.h

-// Copyright (c) 2011 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_SHELL_ALWAYS_ON_TOP_CONTROLLER_H_
-#define UI_AURA_SHELL_ALWAYS_ON_TOP_CONTROLLER_H_
-#pragma once
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "ui/aura/window_observer.h"
-
-namespace aura {
-class Window;
-}
-
-namespace aura_shell {
-namespace internal {
-
-// AlwaysOnTopController puts window into proper containers based on its
-// 'AlwaysOnTop' property. That is, putting a window to |default_container_|
-// if its "AlwaysOnTop" property is false. Otherwise, put it in
-// |always_on_top_container_|.
-class AlwaysOnTopController : public aura::WindowObserver {
- public:
-  AlwaysOnTopController();
-  virtual ~AlwaysOnTopController();
-
-  // Sets the two top level window containers.
-  void SetContainers(aura::Window* default_container,
-                     aura::Window* always_on_top_container);
-
-  // Gets container for given |window| based on its "AlwaysOnTop" property.
-  aura::Window* GetContainer(aura::Window* window) const;
-
- private:
-  // Overridden from aura::WindowObserver:
-  virtual void OnWindowAdded(aura::Window* child) OVERRIDE;
-  virtual void OnWillRemoveWindow(aura::Window* child) OVERRIDE;
-  virtual void OnWindowPropertyChanged(aura::Window* window,
-                                       const char* name,
-                                       void* old) OVERRIDE;
-  virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
-
-  aura::Window* default_container_;
-  aura::Window* always_on_top_container_;
-
-  DISALLOW_COPY_AND_ASSIGN(AlwaysOnTopController);
-};
-
-}  // namepsace aura_shell
-}  // namepsace internal
-
-#endif  // UI_AURA_SHELL_ALWAYS_ON_TOP_CONTROLLER_H_