Recursive operation delegate continues operations with ignoring errors.

storage/browser/fileapi/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 STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_H_
 #define STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 50 matching lines @@
   STORAGE_EXPORT static FileSystemOperation* Create(
       const FileSystemURL& url,
       FileSystemContext* file_system_context,
       scoped_ptr<FileSystemOperationContext> operation_context);
 
   virtual ~FileSystemOperation() {}
 
   // Used for CreateFile(), etc. |result| is the return code of the operation.
   typedef base::Callback<void(base::File::Error result)> StatusCallback;
 
+  // Called when an error had happened during operation.
+  // |url| is the url of processed entry.
+  // |error| is the error code of the failed operation.
+  typedef base::Callback<void(const FileSystemURL& url,
+                              base::File::Error error)> ErrorCallback;
+
   // Used for GetMetadata(). |result| is the return code of the operation,
   // |file_info| is the obtained file info.
   typedef base::Callback<
       void(base::File::Error result,
            const base::File::Info& file_info)> GetMetadataCallback;
 
   // Used for OpenFile(). |on_close_callback| will be called after the file is
   // closed in the child process. It can be null, if no operation is needed on
   // closing a file.
   typedef base::Callback<
@@ skipping 395 matching lines @@
     kOperationOpenFile,
     kOperationCloseFile,
     kOperationGetLocalPath,
     kOperationCancel,
   };
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_H_