Standardize usage of virtual/override/final in components/

components/signin/core/browser/account_tracker_service.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_SIGNIN_CORE_BROWSER_ACCOUNT_TRACKER_SERVICE_H_
 #define COMPONENTS_SIGNIN_CORE_BROWSER_ACCOUNT_TRACKER_SERVICE_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 38 matching lines @@
   };
 
   // Possible values for the kAccountIdMigrationState preference.
   enum AccountIdMigrationState {
     MIGRATION_NOT_STARTED,
     MIGRATION_IN_PROGRESS,
     MIGRATION_DONE
   };
 
   AccountTrackerService();
-  virtual ~AccountTrackerService();
+  ~AccountTrackerService() override;
 
   // KeyedService implementation.
-  virtual void Shutdown() override;
+  void Shutdown() override;
 
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
   void Initialize(OAuth2TokenService* token_service,
                   PrefService* pref_service,
                   net::URLRequestContextGetter* request_context_getter);
 
   // Returns the list of known accounts and for which gaia IDs
   // have been fetched.
@@ skipping 11 matching lines @@
 
  private:
   friend class AccountInfoFetcher;
 
   // These methods are called by fetchers.
   void OnUserInfoFetchSuccess(AccountInfoFetcher* fetcher,
                               const base::DictionaryValue* user_info);
   void OnUserInfoFetchFailure(AccountInfoFetcher* fetcher);
 
   // OAuth2TokenService::Observer implementation.
-  virtual void OnRefreshTokenAvailable(const std::string& account_id) override;
-  virtual void OnRefreshTokenRevoked(const std::string& account_id) override;
+  void OnRefreshTokenAvailable(const std::string& account_id) override;
+  void OnRefreshTokenRevoked(const std::string& account_id) override;
 
   struct AccountState {
     AccountInfo info;
   };
 
   void NotifyAccountUpdated(const AccountState& state);
   void NotifyAccountRemoved(const AccountState& state);
 
   void StartTrackingAccount(const std::string& account_id);
   void StopTrackingAccount(const std::string& account_id);
@@ skipping 14 matching lines @@
   scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
   std::map<std::string, AccountInfoFetcher*> user_info_requests_;
   std::map<std::string, AccountState> accounts_;
   ObserverList<Observer> observer_list_;
   bool shutdown_called_;
 
   DISALLOW_COPY_AND_ASSIGN(AccountTrackerService);
 };
 
 #endif  // COMPONENTS_SIGNIN_CORE_BROWSER_ACCOUNT_TRACKER_SERVICE_H_