replace OVERRIDE and FINAL with override and final in sync/

sync/internal_api/public/events/poll_get_updates_request_event.h

Index: sync/internal_api/public/events/poll_get_updates_request_event.h
diff --git a/sync/internal_api/public/events/poll_get_updates_request_event.h b/sync/internal_api/public/events/poll_get_updates_request_event.h
index f039c1de92d5e988d3a5d87b94a9de47e9dac5b6..9f7f3933af3e7d7244fecf97e6e1bec27d5a4bb0 100644
--- a/sync/internal_api/public/events/poll_get_updates_request_event.h
+++ b/sync/internal_api/public/events/poll_get_updates_request_event.h
@@ -27,11 +27,11 @@ class SYNC_EXPORT_PRIVATE PollGetUpdatesRequestEvent : public ProtocolEvent {
       const sync_pb::ClientToServerMessage& request);
   virtual ~PollGetUpdatesRequestEvent();
 
-  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;
+  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;
 
  private:
   const base::Time timestamp_;