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

chrome/browser/sync/glue/local_device_info_provider_impl.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_GLUE_LOCAL_DEVICE_INFO_PROVIDER_IMPL_H_
 #define CHROME_BROWSER_SYNC_GLUE_LOCAL_DEVICE_INFO_PROVIDER_IMPL_H_
 
 #include "base/memory/weak_ptr.h"
 #include "components/sync_driver/device_info.h"
 #include "components/sync_driver/local_device_info_provider.h"
 
 namespace chrome {
 class VersionInfo;
 }
 
 namespace browser_sync {
 
 class LocalDeviceInfoProviderImpl
     : public sync_driver::LocalDeviceInfoProvider {
  public:
   LocalDeviceInfoProviderImpl();
-  virtual ~LocalDeviceInfoProviderImpl();
+  ~LocalDeviceInfoProviderImpl() override;
 
   // LocalDeviceInfoProvider implementation.
-  virtual const sync_driver::DeviceInfo* GetLocalDeviceInfo() const override;
-  virtual std::string GetLocalSyncCacheGUID() const override;
-  virtual void Initialize(
-      const std::string& cache_guid,
-      const std::string& signin_scoped_device_id) override;
-  virtual scoped_ptr<Subscription> RegisterOnInitializedCallback(
-    const base::Closure& callback) override;
+  const sync_driver::DeviceInfo* GetLocalDeviceInfo() const override;
+  std::string GetLocalSyncCacheGUID() const override;
+  void Initialize(const std::string& cache_guid,
+                  const std::string& signin_scoped_device_id) override;
+  scoped_ptr<Subscription> RegisterOnInitializedCallback(
+      const base::Closure& callback) override;
 
   // Helper to construct a user agent string (ASCII) suitable for use by
   // the syncapi for any HTTP communication. This string is used by the sync
   // backend for classifying client types when calculating statistics.
   static std::string MakeUserAgentForSyncApi(
       const chrome::VersionInfo& version_info);
 
  private:
   void InitializeContinuation(const std::string& guid,
                               const std::string& signin_scoped_device_id,
                               const std::string& session_name);
 
   std::string cache_guid_;
   scoped_ptr<sync_driver::DeviceInfo> local_device_info_;
   base::CallbackList<void(void)> callback_list_;
   base::WeakPtrFactory<LocalDeviceInfoProviderImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(LocalDeviceInfoProviderImpl);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_LOCAL_DEVICE_INFO_PROVIDER_IMPL_H_