Standardize usage of virtual/override/final in sync/

sync/internal_api/public/events/normal_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_NORMAL_GET_UPDATES_REQUEST_H
 #define SYNC_INTERNAL_API_EVENTS_NORMAL_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/base/model_type.h"
 #include "sync/internal_api/public/events/protocol_event.h"
 #include "sync/protocol/sync.pb.h"
 
 namespace syncer {
 
 namespace sessions {
 class NudgeTracker;
 }  // namespace sessions
 
 // An event representing a 'normal mode' GetUpdate request to the server.
 class SYNC_EXPORT_PRIVATE NormalGetUpdatesRequestEvent : public ProtocolEvent {
  public:
   NormalGetUpdatesRequestEvent(
       base::Time timestamp,
       const sessions::NudgeTracker& nudge_tracker,
       const sync_pb::ClientToServerMessage& request);
 
-  virtual ~NormalGetUpdatesRequestEvent();
+  ~NormalGetUpdatesRequestEvent() 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:
   NormalGetUpdatesRequestEvent(
       base::Time timestamp,
       ModelTypeSet nudged_types,
       ModelTypeSet notified_types,
       ModelTypeSet refresh_requested_types,
       bool is_retry,
       sync_pb::ClientToServerMessage request);
 
   const base::Time timestamp_;
 
   const ModelTypeSet nudged_types_;
   const ModelTypeSet notified_types_;
   const ModelTypeSet refresh_requested_types_;
   const bool is_retry_;
 
   const sync_pb::ClientToServerMessage request_;
 
   DISALLOW_COPY_AND_ASSIGN(NormalGetUpdatesRequestEvent);
 };
 
 }
 
 #endif  // SYNC_INTERNAL_API_EVENTS_NORMAL_GET_UPDATES_REQUEST_H