Retry: Merge FileUtilProxy and FileSystemFileUtilProxy using PostTaskAndReply: CreateOrOpen/Close

webkit/fileapi/file_system_operation.h

 // Copyright (c) 2011 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_FILE_SYSTEM_OPERATION_H_
 #define WEBKIT_FILEAPI_FILE_SYSTEM_OPERATION_H_
 
 #include <vector>
 
 #include "base/file_path.h"
@@ skipping 233 matching lines @@
     kOperationCancel,
   };
 
   // A flag to make sure we call operation only once per instance.
   OperationType pending_operation_;
 #endif
 
   // Proxy for calling file_util_proxy methods.
   scoped_refptr<base::MessageLoopProxy> proxy_;
 
+  // This can be NULL if the operation is cancelled on the way.
   scoped_ptr<FileSystemCallbackDispatcher> dispatcher_;
 
   FileSystemOperationContext operation_context_;
 
   base::WeakPtrFactory<FileSystemOperation> weak_factory_;
 
   scoped_ptr<ScopedQuotaUtilHelper> quota_util_helper_;
 
   // These are all used only by Write().
   friend class FileWriterDelegate;
@@ skipping 20 matching lines @@
 
   // Length to be truncated.
   int64 length_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemOperation);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_SYSTEM_OPERATION_H_