[Sync] Fixing easy lint violations.

components/sync/driver/directory_data_type_controller.h

 // Copyright 2015 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 COMPONENTS_SYNC_DRIVER_DIRECTORY_DATA_TYPE_CONTROLLER_H__
 #define COMPONENTS_SYNC_DRIVER_DIRECTORY_DATA_TYPE_CONTROLLER_H__
 
+#include <memory>
+
 #include "components/sync/driver/data_type_controller.h"
-
 #include "components/sync/driver/sync_client.h"
 #include "components/sync/engine/model_safe_worker.h"
 #include "components/sync/syncable/directory.h"
 
 namespace syncer {
 
 class ChangeProcessor;
 
 // Base class for Directory based Data type controllers.
 class DirectoryDataTypeController : public DataTypeController {
@@ skipping 43 matching lines @@
   // Access to the ChangeProcessor for the type being controlled by |this|.
   // Returns NULL if the ChangeProcessor isn't created or connected.
   virtual ChangeProcessor* GetChangeProcessor() const = 0;
 
   SyncClient* const sync_client_;
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_DRIVER_DIRECTORY_DATA_TYPE_CONTROLLER_H__