Standardize usage of virtual/override/final in sync/

sync/internal_api/public/events/configure_get_updates_request_event.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 SYNC_INTERNAL_API_EVENTS_CONFIGURE_GET_UPDATES_REQUEST_H
 #define SYNC_INTERNAL_API_EVENTS_CONFIGURE_GET_UPDATES_REQUEST_H
 
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "sync/base/sync_export.h"
 #include "sync/internal_api/public/events/protocol_event.h"
 #include "sync/protocol/sync.pb.h"
 
 namespace syncer {
 
 // An event representing a configure GetUpdates request to the server.
 class SYNC_EXPORT_PRIVATE ConfigureGetUpdatesRequestEvent
     : public ProtocolEvent {
  public:
   ConfigureGetUpdatesRequestEvent(
       base::Time timestamp,
       sync_pb::SyncEnums::GetUpdatesOrigin origin,
       const sync_pb::ClientToServerMessage& request);
-  virtual ~ConfigureGetUpdatesRequestEvent();
+  ~ConfigureGetUpdatesRequestEvent() override;
 
-  virtual base::Time GetTimestamp() const override;
-  virtual std::string GetType() const override;
-  virtual std::string GetDetails() const override;
-  virtual scoped_ptr<base::DictionaryValue> GetProtoMessage() const override;
-  virtual scoped_ptr<ProtocolEvent> Clone() const override;
+  base::Time GetTimestamp() const override;
+  std::string GetType() const override;
+  std::string GetDetails() const override;
+  scoped_ptr<base::DictionaryValue> GetProtoMessage() const override;
+  scoped_ptr<ProtocolEvent> Clone() const override;
 
  private:
   const base::Time timestamp_;
   const sync_pb::SyncEnums::GetUpdatesOrigin origin_;
   const sync_pb::ClientToServerMessage request_;
 
   DISALLOW_COPY_AND_ASSIGN(ConfigureGetUpdatesRequestEvent);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_EVENTS_CONFIGURE_GET_UPDATES_REQUEST_H