Introduce WindowStateDelegate::ToggleFullscreen

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 831 matching lines @@
                                        internal::SnapSizer::RIGHT_EDGE);
       return true;
     }
     case WINDOW_MINIMIZE:
       return accelerators::ToggleMinimized();
     case TOGGLE_FULLSCREEN: {
       if (key_code == ui::VKEY_MEDIA_LAUNCH_APP2) {
         shell->delegate()->RecordUserMetricsAction(
             UMA_ACCEL_FULLSCREEN_F4);
       }
-      shell->delegate()->ToggleFullscreen();
+      accelerators::ToggleFullscreen();
       return true;
     }
     case TOGGLE_MAXIMIZED: {
       accelerators::ToggleMaximized();
       return true;
     }
     case WINDOW_POSITION_CENTER: {
       aura::Window* window = wm::GetActiveWindow();
       if (window) {
         wm::CenterWindow(window);
@@ skipping 120 matching lines @@
     keyboard_brightness_control_delegate) {
   keyboard_brightness_control_delegate_ =
       keyboard_brightness_control_delegate.Pass();
 }
 
 bool AcceleratorController::CanHandleAccelerators() const {
   return true;
 }
 
 }  // namespace ash