Standardize usage of virtual/override/final in components/

components/search_engines/testing_search_terms_data.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_TESTING_SEARCH_TERMS_DATA_H_
 #define COMPONENTS_SEARCH_ENGINES_TESTING_SEARCH_TERMS_DATA_H_
 
 #include "components/search_engines/search_terms_data.h"
 
 class TestingSearchTermsData : public SearchTermsData {
  public:
   explicit TestingSearchTermsData(const std::string& google_base_url);
-  virtual ~TestingSearchTermsData();
+  ~TestingSearchTermsData() override;
 
-  virtual std::string GoogleBaseURLValue() const override;
-  virtual base::string16 GetRlzParameterValue(
-      bool from_app_list) const override;
-  virtual std::string GetSearchClient() const override;
-  virtual std::string GoogleImageSearchSource() const override;
-  virtual bool EnableAnswersInSuggest() const override;
-  virtual bool IsShowingSearchTermsOnSearchResultsPages() const override;
-  virtual int OmniboxStartMargin() const override;
+  std::string GoogleBaseURLValue() const override;
+  base::string16 GetRlzParameterValue(bool from_app_list) const override;
+  std::string GetSearchClient() const override;
+  std::string GoogleImageSearchSource() const override;
+  bool EnableAnswersInSuggest() const override;
+  bool IsShowingSearchTermsOnSearchResultsPages() const override;
+  int OmniboxStartMargin() const override;
 
   void set_google_base_url(const std::string& google_base_url) {
     google_base_url_ = google_base_url;
   }
   void set_search_client(const std::string& search_client) {
     search_client_ = search_client;
   }
   void set_enable_answers_in_suggest(bool enable_answers_in_suggest) {
     enable_answers_in_suggest_ = enable_answers_in_suggest;
   }
   void set_is_showing_search_terms_on_search_results_pages(bool value) {
     is_showing_search_terms_on_search_results_pages_ = value;
   }
   void set_omnibox_start_margin(int omnibox_start_margin) {
     omnibox_start_margin_ = omnibox_start_margin;
   }
 
  private:
   std::string google_base_url_;
   std::string search_client_;
   bool enable_answers_in_suggest_;
   bool is_showing_search_terms_on_search_results_pages_;
   int omnibox_start_margin_;
 
   DISALLOW_COPY_AND_ASSIGN(TestingSearchTermsData);
 };
 
 #endif  // COMPONENTS_SEARCH_ENGINES_TESTING_SEARCH_TERMS_DATA_H_