[WIP] ash/extensions: Add experimental extension support for window-management in ash.

ash/wm/window_util.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_WINDOW_UTIL_H_
 #define ASH_WM_WINDOW_UTIL_H_
 
 #include "ash/ash_export.h"
 
 namespace aura {
@@ skipping 19 matching lines @@
 ASH_EXPORT bool CanActivateWindow(aura::Window* window);
 
 // Retrieves the activatable window for |window|. If |window| is activatable,
 // this will just return it, otherwise it will climb the parent/transient parent
 // chain looking for a window that is activatable, per the ActivationController.
 // If you're looking for a function to get the activatable "top level" window,
 // this is probably what you're looking for.
 ASH_EXPORT aura::Window* GetActivatableWindow(aura::Window* window);
 
 // Returns true if |window| is normal or default.
-ASH_EXPORT bool IsWindowNormal(aura::Window* window);
+ASH_EXPORT bool IsWindowNormal(const aura::Window* window);
 
 // Returns true if |window| is in the maximized state.
-ASH_EXPORT bool IsWindowMaximized(aura::Window* window);
+ASH_EXPORT bool IsWindowMaximized(const aura::Window* window);
 
 // Returns true if |window| is minimized.
-ASH_EXPORT bool IsWindowMinimized(aura::Window* window);
+ASH_EXPORT bool IsWindowMinimized(const aura::Window* window);
 
 // Returns true if |window| is in the fullscreen state.
-ASH_EXPORT bool IsWindowFullscreen(aura::Window* window);
+ASH_EXPORT bool IsWindowFullscreen(const aura::Window* window);
 
 // Maximizes |window|, which must not be NULL.
 ASH_EXPORT void MaximizeWindow(aura::Window* window);
 
 // Minimizes |window|, which must not be NULL.
 ASH_EXPORT void MinimizeWindow(aura::Window* window);
 
 // Restores |window|, which must not be NULL.
 ASH_EXPORT void RestoreWindow(aura::Window* window);
 
 // Moves the window to the center of the display.
 ASH_EXPORT void CenterWindow(aura::Window* window);
 
 // Recreates a fresh layer for |window| and all its child windows. Does not
 // recreate shadows or other non-window layers. Returns the old layer and its
 // children, maintaining the hierarchy.
 ASH_EXPORT ui::Layer* RecreateWindowLayers(aura::Window* window);
 
 // Deletes |layer| and all its child layers.
 ASH_EXPORT void DeepDeleteLayers(ui::Layer* layer);
 
 }  // namespace wm
 }  // namespace ash
 
 #endif  // ASH_WM_WINDOW_UTIL_H_