chromeos: converts PanelLayoutManager to aura::Window

ash/wm/always_on_top_controller.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_ALWAYS_ON_TOP_CONTROLLER_H_
 #define ASH_WM_ALWAYS_ON_TOP_CONTROLLER_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
 #include "base/macros.h"
 #include "ui/aura/window_observer.h"
 
 namespace ash {
 
-class WmWindow;
 class WorkspaceLayoutManager;
 
 // AlwaysOnTopController puts window into proper containers based on its
 // 'AlwaysOnTop' property. That is, putting a window into the worskpace
 // container if its "AlwaysOnTop" property is false. Otherwise, put it in
 // |always_on_top_container_|.
 class ASH_EXPORT AlwaysOnTopController : public aura::WindowObserver {
  public:
-  explicit AlwaysOnTopController(WmWindow* viewport);
+  explicit AlwaysOnTopController(aura::Window* viewport);
   ~AlwaysOnTopController() override;
 
   // Gets container for given |window| based on its "AlwaysOnTop" property.
-  WmWindow* GetContainer(WmWindow* window) const;
+  aura::Window* GetContainer(aura::Window* window) const;
 
   WorkspaceLayoutManager* GetLayoutManager() const;
 
   void SetLayoutManagerForTest(
       std::unique_ptr<WorkspaceLayoutManager> layout_manager);
 
  private:
   // Overridden from aura::WindowObserver:
   void OnWindowHierarchyChanged(const HierarchyChangeParams& params) override;
   void OnWindowPropertyChanged(aura::Window* window,
                                const void* key,
                                intptr_t old) override;
   void OnWindowDestroying(aura::Window* window) override;
 
-  WmWindow* always_on_top_container_;
+  aura::Window* always_on_top_container_;
 
   DISALLOW_COPY_AND_ASSIGN(AlwaysOnTopController);
 };
 
 }  // namepsace ash
 
 #endif  // ASH_WM_ALWAYS_ON_TOP_CONTROLLER_H_