[SyncFS] Expand simple functions to their caller in drive_backend/

chrome/browser/sync_file_system/drive_backend/folder_creator.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/sync_file_system/drive_backend/folder_creator.h"
 
 #include "chrome/browser/drive/drive_api_util.h"
 #include "chrome/browser/drive/drive_service_interface.h"
 #include "chrome/browser/sync_file_system/drive_backend/drive_backend_util.h"
 #include "chrome/browser/sync_file_system/drive_backend/metadata_database.h"
@@ skipping 96 matching lines @@
   }
 
   if (!oldest) {
     callback.Run(std::string(), SYNC_FILE_ERROR_NOT_FOUND);
     return;
   }
 
   std::string file_id = oldest->file_id();
 
   status = metadata_database_->UpdateByFileResourceList(candidates.Pass());
-
-  // TODO(tzik): Expand this function.
-  DidUpdateDatabase(file_id, callback, status);
-}
-
-void FolderCreator::DidUpdateDatabase(const std::string& file_id,
-                                      const FileIDCallback& callback,
-                                      SyncStatusCode status) {
   if (status != SYNC_STATUS_OK) {
     callback.Run(std::string(), status);
     return;
   }
 
   DCHECK(!file_id.empty());
   if (!metadata_database_->FindFileByFileID(file_id, NULL)) {
     callback.Run(std::string(), SYNC_FILE_ERROR_NOT_FOUND);
     return;
   }
 
   callback.Run(file_id, status);
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system