Fixes possible crash if the window hosting a menu was closed while the

chrome/browser/views/chrome_views_delegate.h

 // Copyright (c) 2009 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_VIEWS_CHROME_VIEWS_DELEGATE_H_
 #define CHROME_BROWSER_VIEWS_CHROME_VIEWS_DELEGATE_H_
 
 #include "base/logging.h"
 #include "views/views_delegate.h"
 
 class ChromeViewsDelegate : public views::ViewsDelegate {
  public:
   ChromeViewsDelegate() {}
   virtual ~ChromeViewsDelegate() {}
 
   // Overridden from views::ViewsDelegate:
   virtual Clipboard* GetClipboard() const;
   virtual void SaveWindowPlacement(const std::wstring& window_name,
                                    const gfx::Rect& bounds,
                                    bool maximized);
   virtual bool GetSavedWindowBounds(const std::wstring& window_name,
                                     gfx::Rect* bounds) const;
   virtual bool GetSavedMaximizedState(const std::wstring& window_name,
                                       bool* maximized) const;
 #if defined(OS_WIN)
   virtual HICON GetDefaultWindowIcon() const;
 #endif
+  virtual void AddRef();
+  virtual void ReleaseRef();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ChromeViewsDelegate);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_CHROME_VIEWS_DELEGATE_H_