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

webkit/fileapi/file_system_operation.h

Index: webkit/fileapi/file_system_operation.h
diff --git a/webkit/fileapi/file_system_operation.h b/webkit/fileapi/file_system_operation.h
index ccfb033c8918164cb5f25ea498d6b37fe9f834df..0846ca69326d1510f5504fd87bd536ae760d4522 100644
--- a/webkit/fileapi/file_system_operation.h
+++ b/webkit/fileapi/file_system_operation.h
@@ -251,6 +251,7 @@ class FileSystemOperation {
   // 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_;