[FileAPI] Add file open ID and close callback

webkit/fileapi/file_system_callback_dispatcher.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_FILE_SYSTEM_CALLBACK_DISPATCHER_H_
 #define WEBKIT_FILEAPI_FILE_SYSTEM_CALLBACK_DISPATCHER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 47 matching lines @@
   // Called with an error code when a requested operation has failed.
   virtual void DidFail(base::PlatformFileError error_code) = 0;
 
   // Callback for FileWriter's write() call.
   virtual void DidWrite(int64 bytes, bool complete) = 0;
 
   // Callback for OpenFile.  This isn't in WebFileSystemCallbacks, as it's just
   // for Pepper.
   // The method will be responsible for closing |file|.
   virtual void DidOpenFile(base::PlatformFile file,
+                           int file_open_id,
                            quota::QuotaLimitType quota_policy);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_SYSTEM_CALLBACK_DISPATCHER_H_