Standardize usage of virtual/override/final in chrome/browser/ui/

chrome/browser/ui/webui/suggestions_internals/suggestions_internals_ui.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_WEBUI_SUGGESTIONS_INTERNALS_SUGGESTIONS_INTERNALS_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_SUGGESTIONS_INTERNALS_SUGGESTIONS_INTERNALS_UI_H_
 
 #include "base/basictypes.h"
 #include "content/public/browser/web_ui_controller.h"
 
 // The UI for chrome://suggestions-internals/
 class SuggestionsInternalsUI : public content::WebUIController {
  public:
   explicit SuggestionsInternalsUI(content::WebUI* contents);
-  virtual ~SuggestionsInternalsUI();
+  ~SuggestionsInternalsUI() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SuggestionsInternalsUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SUGGESTIONS_INTERNALS_SUGGESTIONS_INTERNALS_UI_H_