Remove TOGGLE_MAXIMIZED_* from Ash reserved actions list.

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 <string>
 
@@ skipping 695 matching lines @@
     case TOGGLE_MAXIMIZED_PRESSED: {
       // We do not want to toggle maximization on the acceleration key
       // repeating.
       if (toggle_maximized_suppressed_)
         return true;
       toggle_maximized_suppressed_ = true;
       if (key_code == ui::VKEY_F4 && shell->delegate()) {
         shell->delegate()->RecordUserMetricsAction(
             UMA_ACCEL_MAXIMIZE_RESTORE_F4);
       }
-      aura::Window* window = wm::GetActiveWindow();
-      if (!window)
-        return true;
-      if (wm::IsWindowFullscreen(window)) {
-        // Chrome also uses VKEY_F4 as a shortcut. Its action is to toggle
-        // fullscreen. We return false below so Chrome will process the
-        // shortcut again and, in case of VKEY_F4, exit fullscreen.
-        return false;
-      }
-      if (wm::IsWindowMaximized(window))
-        wm::RestoreWindow(window);
-      else if (wm::CanMaximizeWindow(window))
-        wm::MaximizeWindow(window);
+      shell->delegate()->ToggleMaximized();
       return true;
     }
     case TOGGLE_MAXIMIZED_RELEASED: {
       toggle_maximized_suppressed_ = false;
       return true;
     }
     case WINDOW_POSITION_CENTER: {
       aura::Window* window = wm::GetActiveWindow();
       if (window) {
         wm::CenterWindow(window);
@@ skipping 122 matching lines @@
     accelerators_.insert(
         std::make_pair(accelerator, accelerators[i].action));
   }
 }
 
 bool AcceleratorController::CanHandleAccelerators() const {
   return true;
 }
 
 }  // namespace ash