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

chrome/browser/sync/test/integration/sync_extension_installer.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 CHROME_BROWSER_SYNC_TEST_INTEGRATION_SYNC_EXTENSION_INSTALLER_H_
 #define CHROME_BROWSER_SYNC_TEST_INTEGRATION_SYNC_EXTENSION_INSTALLER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class Profile;
 
 // A helper class to help mimic the timing of installs of synced extensions
 // from the app store.
 //
 // Listens for attempts to contact the web store.  When it detects such an
 // attempt (which will fail in tests), it posts a task to fake the installation
 // of synced extensions.
 //
 // Also installs any pending synced extensions when this class is instantiated.
 // This is to avoid a potential races between the emitting of notifications and
 // the instantation of this class.
 class SyncedExtensionInstaller : public content::NotificationObserver {
  public:
   explicit SyncedExtensionInstaller(Profile* profile);
-  virtual ~SyncedExtensionInstaller();
+  ~SyncedExtensionInstaller() override;
 
   // content::NotificationObserver implementation.
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) override;
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
 
  private:
   void DoInstallSyncedExtensions();
 
   Profile* profile_;
   content::NotificationRegistrar registrar_;
 
   base::WeakPtrFactory<SyncedExtensionInstaller> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncedExtensionInstaller);
 };
 
 #endif  // CHROME_BROWSER_SYNC_TEST_INTEGRATION_SYNC_EXTENSION_INSTALLER_H_