Use active window if on current workspace for fullscreen mode.

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 "ash/ash_export.h"
@@ skipping 92 matching lines @@
 
   // Returns the RootWindowController of the target root window.
   static internal::RootWindowController* ForTargetRootWindow();
 
   // Returns container which contains a given |window|.
   static aura::Window* GetContainerForWindow(aura::Window* window);
 
   virtual ~RootWindowController();
 
   aura::Window* root_window() { return dispatcher()->window(); }
+  const aura::Window* root_window() const { return dispatcher()->window(); }
+
   aura::WindowEventDispatcher* dispatcher() { return root_window_.get(); }
+  const aura::WindowEventDispatcher* dispatcher() const {
+    return root_window_.get();
+  }
 
   RootWindowLayoutManager* root_window_layout() { return root_window_layout_; }
 
   WorkspaceController* workspace_controller() {
     return workspace_controller_.get();
   }
 
   AlwaysOnTopController* always_on_top_controller() {
     return always_on_top_controller_.get();
   }
@@ skipping 188 matching lines @@
 
 
 // Gets the RootWindowController for |root_window|.
 ASH_EXPORT RootWindowController* GetRootWindowController(
     const aura::Window* root_window);
 
 }  // namespace internal
 }  // ash
 
 #endif  //  ASH_ROOT_WINDOW_CONTROLLER_H_