The Tor Browser / file revision

 /* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/.

  *

  * The origin of this IDL file is

  * http://xhr.spec.whatwg.org

  */

 [Constructor(optional HTMLFormElement form)]

 interface FormData {

   void append(DOMString name, Blob value, optional DOMString filename);

   void append(DOMString name, DOMString value);

 };