Moves WorkspaceController 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 93 matching lines @@
   ~RootWindowController() override;
 
   AshWindowTreeHost* ash_host() { return ash_host_.get(); }
   const AshWindowTreeHost* ash_host() const { return ash_host_.get(); }
 
   aura::WindowTreeHost* GetHost();
   const aura::WindowTreeHost* GetHost() const;
   aura::Window* GetRootWindow();
   const aura::Window* GetRootWindow() const;
 
-  WorkspaceController* workspace_controller() {
-    return workspace_controller_.get();
-  }
+  WorkspaceController* workspace_controller();
 
   AlwaysOnTopController* always_on_top_controller() {
     return always_on_top_controller_.get();
   }
 
   WmShelfAura* wm_shelf_aura() const { return wm_shelf_aura_.get(); }
 
   // Access the shelf widget associated with this root window controller,
   // NULL if no such shelf exists.
   // DEPRECATED: Prefer GetShelf()->shelf_widget().
@@ skipping 175 matching lines @@
 
   std::unique_ptr<SystemWallpaperController> system_wallpaper_;
 
 #if defined(OS_CHROMEOS)
   std::unique_ptr<BootSplashScreen> boot_splash_screen_;
   // Responsible for initializing TouchExplorationController when spoken
   // feedback is on.
   std::unique_ptr<AshTouchExplorationManager> touch_exploration_manager_;
 #endif
 
-  std::unique_ptr<WorkspaceController> workspace_controller_;
   std::unique_ptr<AlwaysOnTopController> always_on_top_controller_;
 
   // Heads-up displays for touch events. These HUDs are not owned by the root
   // window controller and manage their own lifetimes.
   TouchHudDebug* touch_hud_debug_;
   TouchHudProjection* touch_hud_projection_;
 
   // Handles double clicks on the panel window header.
   std::unique_ptr<ui::EventHandler> panel_container_handler_;
 
@@ skipping 12 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_