Ports SystemModalContainerLayoutManager to ash/common

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 132 matching lines @@
   SystemTray* GetSystemTray();
 
   // Shows context menu at the |location_in_screen|. This uses
   // |ShellDelegate::CreateContextMenu| to define the content of the menu.
   void ShowContextMenu(const gfx::Point& location_in_screen,
                        ui::MenuSourceType source_type);
 
   // True if the window can receive events on this root window.
   bool CanWindowReceiveEvents(aura::Window* window);
 
-  // Returns the layout-manager for the appropriate modal-container. If the
-  // window is inside the lockscreen modal container, then the layout manager
-  // for that is returned. Otherwise the layout manager for the default modal
-  // container is returned.
-  // If no window is specified (i.e. |window| is NULL), then the lockscreen
-  // modal container is used if the screen is currently locked. Otherwise, the
-  // default modal container is used.
-  SystemModalContainerLayoutManager* GetSystemModalLayoutManager(
-      aura::Window* window);
-
   aura::Window* GetContainer(int container_id);
   const aura::Window* GetContainer(int container_id) const;
 
   // Show shelf view if it was created hidden (before session has started).
   // TODO(jamescook): Eliminate this and handle show via Shelf.
   void ShowShelf();
 
   // Creates the shelf for this root window and notifies observers.
   void CreateShelf();
 
@@ skipping 131 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_