replace OVERRIDE and FINAL with override and final in sync/

sync/internal_api/sync_context_proxy_impl.h

Index: sync/internal_api/sync_context_proxy_impl.h
diff --git a/sync/internal_api/sync_context_proxy_impl.h b/sync/internal_api/sync_context_proxy_impl.h
index 7f121a378e139f49c6088c8c50301be69d570ff2..09ec8b382af54eb3456a47dc543439533b7959b7 100644
--- a/sync/internal_api/sync_context_proxy_impl.h
+++ b/sync/internal_api/sync_context_proxy_impl.h
@@ -41,12 +41,12 @@ class SYNC_EXPORT_PRIVATE SyncContextProxyImpl : public SyncContextProxy {
       syncer::ModelType type,
       const DataTypeState& data_type_state,
       const UpdateResponseDataList& pending_updates,
-      const base::WeakPtr<ModelTypeSyncProxyImpl>& sync_proxy_impl) OVERRIDE;
+      const base::WeakPtr<ModelTypeSyncProxyImpl>& sync_proxy_impl) override;
 
   // Disables syncing for the given type on the sync thread.
-  virtual void Disconnect(syncer::ModelType type) OVERRIDE;
+  virtual void Disconnect(syncer::ModelType type) override;
 
-  virtual scoped_ptr<SyncContextProxy> Clone() const OVERRIDE;
+  virtual scoped_ptr<SyncContextProxy> Clone() const override;
 
  private:
   // A SequencedTaskRunner representing the thread where the SyncContext lives.