views: Remove the implementation of about chrome dialog.

chrome/browser/ui/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_BROWSER_WINDOW_H_
 #define CHROME_BROWSER_UI_BROWSER_WINDOW_H_
 
 #include "base/callback_forward.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/ui/base_window.h"
@@ skipping 199 matching lines @@
   virtual void DisableInactiveFrame() {}
 
   // Shows a confirmation dialog box for adding a search engine described by
   // |template_url|. Takes ownership of |template_url|.
   virtual void ConfirmAddSearchProvider(TemplateURL* template_url,
                                         Profile* profile) = 0;
 
   // Shows or hides the bookmark bar depending on its current visibility.
   virtual void ToggleBookmarkBar() = 0;
 
-  // Shows the About Chrome dialog box.
-  virtual void ShowAboutChromeDialog() = 0;
-
   // Shows the Update Recommended dialog box.
   virtual void ShowUpdateChromeDialog() = 0;
 
   // Shows the Task manager.
   virtual void ShowTaskManager() = 0;
 
   // Shows task information related to background pages.
   virtual void ShowBackgroundPages() = 0;
 
   // Shows the Bookmark bubble. |url| is the URL being bookmarked,
@@ skipping 183 matching lines @@
 
   // Returns the ToolbarView.
   virtual ToolbarView* GetToolbarView() const = 0;
 #endif
 
  protected:
   virtual ~BrowserWindowTesting() {}
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_WINDOW_H_