Update {virtual,override,final} to follow C++11 style.

content/shell/browser/shell.h

 // Copyright 2013 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 CONTENT_SHELL_BROWSER_SHELL_H_
 #define CONTENT_SHELL_BROWSER_SHELL_H_
 
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 103 matching lines @@
                               const OpenURLParams& params) override;
   void AddNewContents(WebContents* source,
                       WebContents* new_contents,
                       WindowOpenDisposition disposition,
                       const gfx::Rect& initial_pos,
                       bool user_gesture,
                       bool* was_blocked) override;
   void LoadingStateChanged(WebContents* source,
                            bool to_different_document) override;
 #if defined(OS_ANDROID)
-  virtual void LoadProgressChanged(WebContents* source,
-                                   double progress) override;
+  void LoadProgressChanged(WebContents* source, double progress) override;
 #endif
   void EnterFullscreenModeForTab(WebContents* web_contents,
                                  const GURL& origin) override;
   void ExitFullscreenModeForTab(WebContents* web_contents) override;
   bool IsFullscreenForTabOrPending(
       const WebContents* web_contents) const override;
   void RequestToLockMouse(WebContents* web_contents,
                           bool user_gesture,
                           bool last_unlocked_by_target) override;
   void CloseContents(WebContents* source) override;
@@ skipping 119 matching lines @@
   static base::Callback<void(Shell*)> shell_created_callback_;
 
   // True if the destructur of Shell should post a quit closure on the current
   // message loop if the destructed Shell object was the last one.
   static bool quit_message_loop_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_BROWSER_SHELL_H_