Remove TOGGLE_MAXIMIZED_* from Ash reserved actions list.

ash/shell_delegate.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_SHELL_DELEGATE_H_
 #define ASH_SHELL_DELEGATE_H_
 
 #include <vector>
 
 #include "ash/ash_export.h"
@@ skipping 72 matching lines @@
 
   // Invoked when the user uses Ctrl-Shift-Q to close chrome.
   virtual void Exit() = 0;
 
   // Invoked when the user uses Ctrl+T to open a new tab.
   virtual void NewTab() = 0;
 
   // Invoked when the user uses Ctrl-N or Ctrl-Shift-N to open a new window.
   virtual void NewWindow(bool incognito) = 0;
 
+  // Invoked when the user uses F4 to toggle window maximized state.
+  // When in fullscreen mode, it gets out of fullscreen.
+  virtual void ToggleMaximized() = 0;
+
   // Invoked when the user uses Ctrl-M or Ctrl-O to open file manager.
   virtual void OpenFileManager(bool as_dialog) = 0;
 
   // Invoked when the user opens Crosh.
   virtual void OpenCrosh() = 0;
 
   // Invoked when the user needs to set up mobile networking.
   virtual void OpenMobileSetup(const std::string& service_path) = 0;
 
   // Invoked when the user uses Shift+Ctrl+T to restore the closed tab.
@@ skipping 64 matching lines @@
   virtual void SaveScreenMagnifierScale(double scale) = 0;
 
   // Gets a saved value of the zoom scale of full screen magnifier. If a value
   // is not saved, return a negative value.
   virtual double GetSavedScreenMagnifierScale() = 0;
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_DELEGATE_H_