[Mac] Refactor Cocoa fullscreen code

chrome/browser/ui/cocoa/framed_browser_window.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 CHROME_BROWSER_UI_COCOA_FRAMED_BROWSER_WINDOW_H_
 #define CHROME_BROWSER_UI_COCOA_FRAMED_BROWSER_WINDOW_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "chrome/browser/ui/cocoa/chrome_browser_window.h"
@@ skipping 44 matching lines @@
 // release this lock after the transition is completed.
 - (void)setStyleMaskLock:(BOOL)lock;
 
 // This method is overridden to prevent AppKit from  setting the style mask
 // when frameAndStyleMaskLock_ is set to true.
 - (void)setStyleMask:(NSUInteger)styleMask;
 
 // Returns the desired spacing between window control views.
 - (CGFloat)windowButtonsInterButtonSpacing;
 
-// Calls the superclass's implementation of |-toggleFullScreen:|.
-- (void)toggleSystemFullScreen;
-
 // Called by CustomFrameView to determine a custom location for the Lion
 // fullscreen button. Returns NSZeroPoint to use the Lion default.
 - (NSPoint)fullScreenButtonOriginAdjustment;
 
 // Draws the window theme into the specified rect. Returns whether a theme was
 // drawn (whether incognito or full pattern theme; an overlay image doesn't
 // count).
 + (BOOL)drawWindowThemeInDirtyRect:(NSRect)dirtyRect
                            forView:(NSView*)view
                             bounds:(NSRect)bounds
               forceBlackBackground:(BOOL)forceBlackBackground;
 
 // Gets the color to draw title text.
 - (NSColor*)titleColor;
 
 @end
 
 @interface NSWindow (UndocumentedAPI)
 
 // Undocumented Cocoa API to suppress drawing of the window's title.
 // -setTitle: still works, but the title set only applies to the
 // miniwindow and menus (and, importantly, Expose).  Overridden to
 // return |shouldHideTitle_|.
 -(BOOL)_isTitleHidden;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_FRAMED_BROWSER_WINDOW_H_