Refactor media stream infobar delegate code and also fix a typo

chrome/browser/ui/views/infobars/media_stream_infobar.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_VIEWS_INFOBARS_MEDIA_STREAM_INFOBAR_H_
 #define CHROME_BROWSER_UI_VIEWS_INFOBARS_MEDIA_STREAM_INFOBAR_H_
 #pragma once
 
 #include "chrome/browser/infobars/infobar_delegate.h"
 #include "chrome/browser/media/media_stream_devices_menu_model.h"
@@ skipping 26 matching lines @@
                                     views::View* parent,
                                     views::View* child) OVERRIDE;
   virtual void ButtonPressed(views::Button* sender,
                              const views::Event& event) OVERRIDE;
   virtual int ContentMinimumWidth() const OVERRIDE;
 
   // views::MenuButtonListener:
   virtual void OnMenuButtonClicked(views::View* source,
                                    const gfx::Point& point) OVERRIDE;
 
-  MediaStreamInfoBarDelegate* delegate_;
+  MediaStreamInfoBarDelegate* GetDelegate();
 
   views::Label* label_;
   views::TextButton* allow_button_;
   views::TextButton* deny_button_;
   views::MenuButton* devices_menu_button_;
 
   MediaStreamDevicesMenuModel devices_menu_model_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamInfoBar);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_INFOBARS_MEDIA_STREAM_INFOBAR_H_