Make GetRootWindow() return a Window instead of a RootWindow.

ash/shell.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_SHELL_H_
 #define ASH_SHELL_H_
 
 #include <utility>
 #include <vector>
 
@@ skipping 173 matching lines @@
   static void DeleteInstance();
 
   // Returns the root window controller for the primary root window.
   // TODO(oshima): move this to |RootWindowController|
   static internal::RootWindowController* GetPrimaryRootWindowController();
 
   // Returns all root window controllers.
   // TODO(oshima): move this to |RootWindowController|
   static RootWindowControllerList GetAllRootWindowControllers();
 
-  // Returns the primary RootWindow. The primary RootWindow is the one
-  // that has a launcher.
-  static aura::RootWindow* GetPrimaryRootWindow();
+  // Returns the primary root Window. The primary root Window is the one that
+  // has a launcher.
+  static aura::Window* GetPrimaryRootWindow();
 
-  // Returns a RootWindow when used as a target when creating a new window.
+  // Returns a root Window when used as a target when creating a new window.
   // The root window of the active window is used in most cases, but can
   // be overridden by using ScopedTargetRootWindow().
-  // If you want to get a RootWindow of the active window, just use
+  // If you want to get the root Window of the active window, just use
   // |wm::GetActiveWindow()->GetRootWindow()|.
-  static aura::RootWindow* GetTargetRootWindow();
+  static aura::Window* GetTargetRootWindow();
 
   // Returns the global Screen object that's always active in ash.
   static gfx::Screen* GetScreen();
 
   // Returns all root windows.
   static RootWindowList GetAllRootWindows();
 
-  static aura::Window* GetContainer(aura::RootWindow* root_window,
+  static aura::Window* GetContainer(aura::Window* root_window,
                                     int container_id);
-  static const aura::Window* GetContainer(const aura::RootWindow* root_window,
+  static const aura::Window* GetContainer(const aura::Window* root_window,
                                           int container_id);
 
   // Returns the list of containers that match |container_id| in
   // all root windows. If |priority_root| is given, the container
   // in the |priority_root| will be inserted at the top of the list.
   static std::vector<aura::Window*> GetContainersFromAllRootWindows(
       int container_id,
-      aura::RootWindow* priority_root);
+      aura::Window* priority_root);
 
-  void set_target_root_window(aura::RootWindow* target_root_window) {
+  void set_target_root_window(aura::Window* target_root_window) {
     target_root_window_ = target_root_window;
   }
 
   // Shows the context menu for the background and launcher at
   // |location_in_screen| (in screen coordinates).
   void ShowContextMenu(const gfx::Point& location_in_screen,
                        ui::MenuSourceType source_type);
 
   // Toggles the app list. |window| specifies in which display the app
   // list should be shown. If this is NULL, the active root window
@@ skipping 169 matching lines @@
   ScreenAsh* screen() { return screen_; }
 
   // Force the shelf to query for it's current visibility state.
   void UpdateShelfVisibility();
 
   // TODO(oshima): Define an interface to access shelf/launcher
   // state, or just use Launcher.
 
   // Sets/gets the shelf auto-hide behavior on |root_window|.
   void SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
-                                aura::RootWindow* root_window);
+                                aura::Window* root_window);
   ShelfAutoHideBehavior GetShelfAutoHideBehavior(
-      aura::RootWindow* root_window) const;
+      aura::Window* root_window) const;
 
   // Sets/gets shelf's alignment on |root_window|.
   void SetShelfAlignment(ShelfAlignment alignment,
-                         aura::RootWindow* root_window);
-  ShelfAlignment GetShelfAlignment(aura::RootWindow* root_window);
+                         aura::Window* root_window);
+  ShelfAlignment GetShelfAlignment(aura::Window* root_window);
 
   // Dims or undims the screen.
   void SetDimming(bool should_dim);
 
   // Notifies |observers_| when entering or exiting fullscreen mode in
   // |root_window|.
   void NotifyFullscreenStateChange(bool is_fullscreen,
-                                   aura::RootWindow* root_window);
+                                   aura::Window* root_window);
 
   // Creates a modal background (a partially-opaque fullscreen window)
   // on all displays for |window|.
   void CreateModalBackground(aura::Window* window);
 
   // Called when a modal window is removed. It will activate
   // another modal window if any, or remove modal screens
   // on all displays.
   void OnModalWindowRemoved(aura::Window* removed);
 
@@ skipping 120 matching lines @@
   // If set before the Shell is initialized, the mouse cursor will be hidden
   // when the screen is initially created.
   static bool initially_hide_cursor_;
 
   ScreenAsh* screen_;
 
   // When no explicit target display/RootWindow is given, new windows are
   // created on |scoped_target_root_window_| , unless NULL in
   // which case they are created on |target_root_window_|.
   // |target_root_window_| never becomes NULL during the session.
-  aura::RootWindow* target_root_window_;
-  aura::RootWindow* scoped_target_root_window_;
+  aura::Window* target_root_window_;
+  aura::Window* scoped_target_root_window_;
 
   // The CompoundEventFilter owned by aura::Env object.
   scoped_ptr<views::corewm::CompoundEventFilter> env_filter_;
 
   std::vector<WindowAndBoundsPair> to_restore_;
 
   scoped_ptr<keyboard::KeyboardController> keyboard_controller_;
   scoped_ptr<NestedDispatcherController> nested_dispatcher_controller_;
   scoped_ptr<AcceleratorController> accelerator_controller_;
   scoped_ptr<ShellDelegate> delegate_;
@@ skipping 101 matching lines @@
   bool simulate_modal_window_open_for_testing_;
 
   bool is_touch_hud_projection_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_