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

chrome/browser/sync_file_system/drive_backend/register_app_task.h

 // 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.
 
 #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_REGISTER_APP_TASK_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_REGISTER_APP_TASK_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/sync_file_system/drive_backend/sync_task.h"
 #include "chrome/browser/sync_file_system/sync_callbacks.h"
 #include "google_apis/drive/gdata_errorcode.h"
 
 namespace drive {
 class DriveServiceInterface;
 }
 
 namespace google_apis {
 class ResourceEntry;
-class ResourceList;
 }
 
 namespace sync_file_system {
 namespace drive_backend {
 
 class FileTracker;
 class FolderCreator;
 class MetadataDatabase;
 class SyncEngineContext;
 class TrackerIDSet;
@@ skipping 28 matching lines @@
 
   base::WeakPtrFactory<RegisterAppTask> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RegisterAppTask);
 };
 
 }  // namespace drive_backend
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_REGISTER_APP_TASK_H_