Standardize usage of virtual/override/final specifiers.

chrome/browser/browser_process_impl.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.
 
 // When each service is created, we set a flag indicating this. At this point,
 // the service initialization could fail or succeed. This allows us to remember
 // if we tried to create a service, and not try creating it over and over if
 // the creation failed.
 
 #ifndef CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_
@@ skipping 102 matching lines @@
   DownloadRequestLimiter* download_request_limiter() override;
   BackgroundModeManager* background_mode_manager() override;
   void set_background_mode_manager_for_test(
       scoped_ptr<BackgroundModeManager> manager) override;
   StatusTray* status_tray() override;
   SafeBrowsingService* safe_browsing_service() override;
   safe_browsing::ClientSideDetectionService* safe_browsing_detection_service()
       override;
 
 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
-  virtual void StartAutoupdateTimer() override;
+  void StartAutoupdateTimer() override;
 #endif
 
   ChromeNetLog* net_log() override;
   prerender::PrerenderTracker* prerender_tracker() override;
   component_updater::ComponentUpdateService* component_updater() override;
   CRLSetFetcher* crl_set_fetcher() override;
   component_updater::PnaclComponentInstaller* pnacl_component_installer()
       override;
   MediaFileSystemRegistry* media_file_system_registry() override;
   bool created_local_state() const override;
@@ skipping 167 matching lines @@
   scoped_ptr<gcm::GCMDriver> gcm_driver_;
 
 #if !defined(OS_ANDROID)
   scoped_ptr<ChromeDeviceClient> device_client_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(BrowserProcessImpl);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_