Fixed behavior of the bookmark bar visibility.

chrome/browser/ui/cocoa/browser_window_cocoa.h

 // Copyright (c) 2011 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_BROWSER_WINDOW_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_COCOA_H_
 #pragma once
 
 #include "base/memory/scoped_nsobject.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
+#include "chrome/browser/prefs/pref_change_registrar.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "content/common/notification_registrar.h"
 #include "ui/base/ui_base_types.h"
 
 class Browser;
 @class BrowserWindowController;
 @class FindBarCocoaController;
 @class NSEvent;
 @class NSMenu;
 @class NSWindow;
@@ skipping 106 matching lines @@
   BrowserWindowController* cocoa_controller() { return controller_; }
 
  protected:
   virtual void DestroyBrowser();
 
  private:
   NSWindow* window() const;  // Accessor for the (current) |NSWindow|.
   void UpdateSidebarForContents(TabContents* tab_contents);
 
   NotificationRegistrar registrar_;
+  PrefChangeRegistrar pref_change_registrar_;
   Browser* browser_;  // weak, owned by controller
   BrowserWindowController* controller_;  // weak, owns us
   base::WeakPtrFactory<Browser> confirm_close_factory_;
   scoped_nsobject<NSString> pending_window_title_;
   ui::WindowShowState initial_show_state_;
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_COCOA_H_