Remove WAPI-related code, except the type definition of ResourceEntry.

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"
 #include "google_apis/drive/drive_api_parser.h"
 #include "google_apis/drive/gdata_wapi_parser.h"
 
 namespace drive {
 class DriveServiceInterface;
 class DriveUploaderInterface;
 }
 
 namespace google_apis {
 class ResourceEntry;
-class ResourceList;
 }
 
 namespace sync_file_system {
 namespace drive_backend {
 
 FolderCreator::FolderCreator(drive::DriveServiceInterface* drive_service,
                              MetadataDatabase* metadata_database,
                              const std::string& parent_folder_id,
                              const std::string& title)
     : drive_service_(drive_service),
@@ skipping 91 matching lines @@
   if (!metadata_database_->FindFileByFileID(file_id, nullptr)) {
     callback.Run(std::string(), SYNC_FILE_ERROR_NOT_FOUND);
     return;
   }
 
   callback.Run(file_id, status);
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system