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

chrome/browser/services/gcm/gcm_profile_service.cc

 // Copyright (c) 2013 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/services/gcm/gcm_profile_service.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
@@ skipping 26 matching lines @@
 #endif
 
 namespace gcm {
 
 #if !defined(OS_ANDROID)
 // Identity observer only has actual work to do when the user is actually signed
 // in. It ensures that account tracker is taking
 class GCMProfileService::IdentityObserver : public IdentityProvider::Observer {
  public:
   IdentityObserver(Profile* profile, GCMDriver* driver);
-  virtual ~IdentityObserver();
+  ~IdentityObserver() override;
 
   // IdentityProvider::Observer:
-  virtual void OnActiveAccountLogin() override;
-  virtual void OnActiveAccountLogout() override;
+  void OnActiveAccountLogin() override;
+  void OnActiveAccountLogout() override;
 
   std::string SignedInUserName() const;
 
  private:
   void StartAccountTracker();
 
   Profile* profile_;
   GCMDriver* driver_;
   scoped_ptr<IdentityProvider> identity_provider_;
   scoped_ptr<GCMAccountTracker> gcm_account_tracker_;
@@ skipping 163 matching lines @@
 
 void GCMProfileService::SetDriverForTesting(GCMDriver* driver) {
   driver_.reset(driver);
 #if !defined(OS_ANDROID)
   if (identity_observer_)
     identity_observer_.reset(new IdentityObserver(profile_, driver));
 #endif  // !defined(OS_ANDROID)
 }
 
 }  // namespace gcm