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

chrome/browser/favicon/favicon_service.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_FAVICON_FAVICON_SERVICE_H_
 #define CHROME_BROWSER_FAVICON_FAVICON_SERVICE_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 12 matching lines @@
 
 // The favicon service provides methods to access favicons. It calls the history
 // backend behind the scenes. The callbacks are run asynchronously, even in the
 // case of an error.
 class FaviconService : public KeyedService {
  public:
   // TODO(jif): Remove usage of Profile. http://crbug.com/378208.
   // The FaviconClient must outlive the constructed FaviconService.
   FaviconService(Profile* profile, FaviconClient* favicon_client);
 
-  virtual ~FaviconService();
+  ~FaviconService() override;
 
   // We usually pass parameters with pointer to avoid copy. This function is a
   // helper to run FaviconResultsCallback with pointer parameters.
   static void FaviconResultsCallbackRunner(
       const favicon_base::FaviconResultsCallback& callback,
       const std::vector<favicon_base::FaviconRawBitmapResult>* results);
 
   //////////////////////////////////////////////////////////////////////////////
   // Methods to request favicon bitmaps from the history backend for |icon_url|.
   // |icon_url| is the URL of the icon itself.
@@ skipping 199 matching lines @@
   void RunFaviconRawBitmapCallbackWithBitmapResults(
       const favicon_base::FaviconRawBitmapCallback& callback,
       int desired_size_in_pixel,
       const std::vector<favicon_base::FaviconRawBitmapResult>&
           favicon_bitmap_results);
 
   DISALLOW_COPY_AND_ASSIGN(FaviconService);
 };
 
 #endif  // CHROME_BROWSER_FAVICON_FAVICON_SERVICE_H_