Update {virtual,override,final} to follow C++11 style in chrome/browser/chromeos/login.

chrome/browser/chromeos/login/version_info_updater.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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_
 
 #include <string>
 
 #include "base/memory/scoped_vector.h"
@@ skipping 17 matching lines @@
     // Called when OS version label should be updated.
     virtual void OnOSVersionLabelTextUpdated(
         const std::string& os_version_label_text) = 0;
 
     // Called when the enterprise info notice should be updated.
     virtual void OnEnterpriseInfoUpdated(
         const std::string& enterprise_info) = 0;
   };
 
   explicit VersionInfoUpdater(Delegate* delegate);
-  virtual ~VersionInfoUpdater();
+  ~VersionInfoUpdater() override;
 
   // Sets delegate.
   void set_delegate(Delegate* delegate) { delegate_ = delegate; }
 
   // Starts fetching version info. The delegate will be notified when update
   // is received.
   void StartUpdate(bool is_official_build);
 
  private:
   // policy::CloudPolicyStore::Observer interface:
-  virtual void OnStoreLoaded(policy::CloudPolicyStore* store) override;
-  virtual void OnStoreError(policy::CloudPolicyStore* store) override;
+  void OnStoreLoaded(policy::CloudPolicyStore* store) override;
+  void OnStoreError(policy::CloudPolicyStore* store) override;
 
   // Update the version label.
   void UpdateVersionLabel();
 
   // Check and update enterprise domain.
   void UpdateEnterpriseInfo();
 
   // Set enterprise domain name.
   void SetEnterpriseInfo(const std::string& domain_name);
 
@@ skipping 20 matching lines @@
   // at a later time without worrying that they will actually try to
   // happen after the lifetime of this object.
   base::WeakPtrFactory<VersionInfoUpdater> weak_pointer_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VersionInfoUpdater);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_