Makes RootWindowController window creation in terms of common types

ash/root_window_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_ROOT_WINDOW_CONTROLLER_H_
 #define ASH_ROOT_WINDOW_CONTROLLER_H_
 
 #include <map>
 #include <memory>
 
@@ skipping 55 matching lines @@
 class SystemTray;
 class TouchHudDebug;
 class TouchHudProjection;
 class WorkspaceController;
 
 #if defined(OS_CHROMEOS)
 class BootSplashScreen;
 class AshTouchExplorationManager;
 #endif
 
+namespace wm {
+class WmWindow;
+}
+
 // This class maintains the per root window state for ash. This class
 // owns the root window and other dependent objects that should be
 // deleted upon the deletion of the root window. This object is
 // indirectly owned and deleted by |WindowTreeHostManager|.
 // The RootWindowController for particular root window is stored in
 // its property (RootWindowSettings) and can be obtained using
 // |GetRootWindowController(aura::WindowEventDispatcher*)| function.
 //
 // NOTE: In classic ash there is one RootWindow per display, so every RootWindow
 // has a RootWindowController. In mus/mash there is one RootWindow per top-level
@@ skipping 156 matching lines @@
   void Init(RootWindowType root_window_type, bool first_run_after_boot);
 
   void InitLayoutManagers();
 
   // Initializes |system_background_| and possibly also |boot_splash_screen_|.
   // |is_first_run_after_boot| determines the background's initial color.
   void CreateSystemBackground(bool is_first_run_after_boot);
 
   // Creates each of the special window containers that holds windows of various
   // types in the shell UI.
-  void CreateContainersInRootWindow(aura::Window* root_window);
+  void CreateContainersInRootWindow(wm::WmWindow* root_window);
 
   // Enables projection touch HUD.
   void EnableTouchHudProjection();
 
   // Disables projection touch HUD.
   void DisableTouchHudProjection();
 
   // Callback for MenuModelAdapter.
   void OnMenuClosed();
 
@@ skipping 56 matching lines @@
 
 // On classic ash, returns the RootWindowController for the given |root_window|.
 // On mus ash, returns the RootWindowController for the primary display.
 // See RootWindowController class comment above.
 ASH_EXPORT RootWindowController* GetRootWindowController(
     const aura::Window* root_window);
 
 }  // namespace ash
 
 #endif  // ASH_ROOT_WINDOW_CONTROLLER_H_