Update {virtual,override,final} to follow C++11 style chrome/browser/ui.

chrome/browser/ui/ash/chrome_new_window_delegate_chromeos.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 CHROME_BROWSER_UI_ASH_CHROME_NEW_WINDOW_DELEGATE_CHROMEOS_H_
 #define CHROME_BROWSER_UI_ASH_CHROME_NEW_WINDOW_DELEGATE_CHROMEOS_H_
 
 #include "chrome/browser/ui/ash/chrome_new_window_delegate.h"
 
 class ChromeNewWindowDelegateChromeos : public ChromeNewWindowDelegate {
  public:
   ChromeNewWindowDelegateChromeos();
-  virtual ~ChromeNewWindowDelegateChromeos();
+  ~ChromeNewWindowDelegateChromeos() override;
 
   // Overridden from ash::NewWindowDelegate:
-  virtual void OpenFileManager() override;
-  virtual void OpenCrosh() override;
-  virtual void OpenGetHelp() override;
-  virtual void ShowKeyboardOverlay() override;
+  void OpenFileManager() override;
+  void OpenCrosh() override;
+  void OpenGetHelp() override;
+  void ShowKeyboardOverlay() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ChromeNewWindowDelegateChromeos);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_CHROME_NEW_WINDOW_DELEGATE_CHROMEOS_H_