2nd try: FileAPI: Split recursive remove into multiple tasks.

webkit/fileapi/syncable/syncable_file_system_operation.h

 // Copyright (c) 2012 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 WEBKIT_FILEAPI_SYNCABLE_SYNCABLE_FILE_SYSTEM_OPERATION_H_
 #define WEBKIT_FILEAPI_SYNCABLE_SYNCABLE_FILE_SYSTEM_OPERATION_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 71 matching lines @@
   SyncableFileSystemOperation(FileSystemContext* file_system_context,
                               FileSystemOperation* file_system_operation);
 
   void DidFinish(base::PlatformFileError status);
   void DidWrite(const WriteCallback& callback,
                 base::PlatformFileError result,
                 int64 bytes,
                 bool complete);
 
   void OnCancelled();
-
   void AbortOperation(const StatusCallback& callback,
                       base::PlatformFileError error);
 
+  // Just destruct this; used when we 9simply delegate the operation
+  // to the owning file_system_operation_.
+  // (See the comment at AsLocalFileSystemOperation())
+  void Destruct();
+
   base::WeakPtr<SyncableFileOperationRunner> operation_runner_;
   LocalFileSystemOperation* file_system_operation_;
   std::vector<FileSystemURL> target_paths_;
 
   StatusCallback completion_callback_;
 
   bool is_directory_operation_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncableFileSystemOperation);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_SYNCABLE_SYNCABLE_FILE_SYSTEM_OPERATION_H_