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

chrome/browser/autocomplete/history_url_provider.cc

 // 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.
 
 #include "chrome/browser/autocomplete/history_url_provider.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 260 matching lines @@
 // SearchTermsDataSnapshot
 
 // Implementation of SearchTermsData that takes a snapshot of another
 // SearchTermsData by copying all the responses to the different getters into
 // member strings, then returning those strings when its own getters are called.
 // This will typically be constructed on the UI thread from
 // UIThreadSearchTermsData but is subsequently safe to use on any thread.
 class SearchTermsDataSnapshot : public SearchTermsData {
  public:
   explicit SearchTermsDataSnapshot(const SearchTermsData& search_terms_data);
-  virtual ~SearchTermsDataSnapshot();
+  ~SearchTermsDataSnapshot() override;
 
-  virtual std::string GoogleBaseURLValue() const override;
-  virtual std::string GetApplicationLocale() const override;
-  virtual base::string16 GetRlzParameterValue(
-      bool from_app_list) const override;
-  virtual std::string GetSearchClient() const override;
-  virtual bool EnableAnswersInSuggest() const override;
-  virtual bool IsShowingSearchTermsOnSearchResultsPages() const override;
-  virtual std::string InstantExtendedEnabledParam(
-      bool for_search) const override;
-  virtual std::string ForceInstantResultsParam(
-      bool for_prerender) const override;
-  virtual std::string NTPIsThemedParam() const override;
-  virtual std::string GoogleImageSearchSource() const override;
+  std::string GoogleBaseURLValue() const override;
+  std::string GetApplicationLocale() const override;
+  base::string16 GetRlzParameterValue(bool from_app_list) const override;
+  std::string GetSearchClient() const override;
+  bool EnableAnswersInSuggest() const override;
+  bool IsShowingSearchTermsOnSearchResultsPages() const override;
+  std::string InstantExtendedEnabledParam(bool for_search) const override;
+  std::string ForceInstantResultsParam(bool for_prerender) const override;
+  std::string NTPIsThemedParam() const override;
+  std::string GoogleImageSearchSource() const override;
 
  private:
   std::string google_base_url_value_;
   std::string application_locale_;
   base::string16 rlz_parameter_value_;
   std::string search_client_;
   bool enable_answers_in_suggest_;
   bool is_showing_search_terms_on_search_results_pages_;
   std::string instant_extended_enabled_param_;
   std::string instant_extended_enabled_param_for_search_;
@@ skipping 852 matching lines @@
     AutocompleteMatch::ClassifyLocationInString(base::string16::npos, 0,
         match.contents.length(), ACMatchClassification::URL,
         &match.contents_class);
   }
   match.description = info.title();
   match.description_class =
       ClassifyDescription(params.input.text(), match.description);
   RecordAdditionalInfoFromUrlRow(info, &match);
   return match;
 }