Move base/mac_util.h to base/mac and use the base::mac namespace....

chrome/browser/ui/cocoa/fullscreen_window.mm

 // Copyright (c) 2010 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.
 
 #import "chrome/browser/ui/cocoa/fullscreen_window.h"
 
-#include "base/mac_util.h"
 #include "chrome/browser/themes/browser_theme_provider.h"
 #import "chrome/browser/ui/cocoa/themed_window.h"
 
 @implementation FullscreenWindow
 
 // Make sure our designated initializer gets called.
 - (id)init {
   return [self initForScreen:[NSScreen mainScreen]];
 }
 
@@ skipping 73 matching lines @@
 
   // Explicitly enable |-performClose:| (see above); otherwise the fact that
   // this window does not have a close button results in it being disabled.
   if (action == @selector(performClose:))
     return YES;
 
   return [super validateUserInterfaceItem:item];
 }
 
 @end