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

ash/accelerators/accelerator_controller.cc

 // 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.
 
 #include "ash/accelerators/accelerator_controller.h"
 
 #include <algorithm>
 #include <cmath>
 #include <iostream>
 #include <string>
@@ skipping 265 matching lines @@
   gfx::Point point = Shell::GetScreen()->GetCursorScreenPoint();
   gfx::Display display = Shell::GetScreen()->GetDisplayNearestPoint(point);
   const DisplayInfo& display_info =
       Shell::GetInstance()->display_manager()->GetDisplayInfo(display.id());
   Shell::GetInstance()->display_manager()->SetDisplayRotation(
       display.id(), GetNextRotation(display_info.rotation()));
   return true;
 }
 
 bool HandleToggleRootWindowFullScreen() {
-  Shell::GetPrimaryRootWindow()->ToggleFullScreen();
+  Shell::GetPrimaryRootWindow()->GetDispatcher()->ToggleFullScreen();
   return true;
 }
 
 // Magnify the screen
 bool HandleMagnifyScreen(int delta_index) {
   if (ash::Shell::GetInstance()->magnification_controller()->IsEnabled()) {
     // TODO(yoshiki): Move the following logic to MagnificationController.
     float scale =
         ash::Shell::GetInstance()->magnification_controller()->GetScale();
     // Calculate rounded logarithm (base kMagnificationScaleFactor) of scale.
@@ skipping 683 matching lines @@
     keyboard_brightness_control_delegate) {
   keyboard_brightness_control_delegate_ =
       keyboard_brightness_control_delegate.Pass();
 }
 
 bool AcceleratorController::CanHandleAccelerators() const {
   return true;
 }
 
 }  // namespace ash