Standardize usage of virtual/override/final in components/

components/search_engines/template_url_fetcher.h

 // Copyright 2014 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 COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_FETCHER_H_
 #define COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_FETCHER_H_
 
 #include "base/callback_forward.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 22 matching lines @@
       scoped_ptr<TemplateURL> template_url)> ConfirmAddSearchProviderCallback;
 
   enum ProviderType {
     AUTODETECTED_PROVIDER,
     EXPLICIT_PROVIDER  // Supplied by Javascript.
   };
 
   // Creates a TemplateURLFetcher.
   TemplateURLFetcher(TemplateURLService* template_url_service,
                      net::URLRequestContextGetter* request_context);
-  virtual ~TemplateURLFetcher();
+  ~TemplateURLFetcher() override;
 
   // If TemplateURLFetcher is not already downloading the OSDD for osdd_url,
   // it is downloaded. If successful and the result can be parsed, a TemplateURL
   // is added to the TemplateURLService.
   //
   // If |provider_type| is AUTODETECTED_PROVIDER, |keyword| must be non-empty,
   // and if there's already a non-replaceable TemplateURL in the model for
   // |keyword|, or we're already downloading an OSDD for this keyword, no
   // download is started.  If |provider_type| is EXPLICIT_PROVIDER, |keyword| is
   // ignored.
@@ skipping 26 matching lines @@
   TemplateURLService* template_url_service_;
   scoped_refptr<net::URLRequestContextGetter> request_context_;
 
   // In progress requests.
   Requests requests_;
 
   DISALLOW_COPY_AND_ASSIGN(TemplateURLFetcher);
 };
 
 #endif  // COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_FETCHER_H_