diff -r 000000000000 -r 6474c204b198 dom/webidl/HTMLHtmlElement.webidl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/webidl/HTMLHtmlElement.webidl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,22 @@
+/* -*- 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://www.whatwg.org/specs/web-apps/current-work/#the-html-element
+ * http://www.whatwg.org/specs/web-apps/current-work/#other-elements,-attributes-and-apis
+ *
+ * © Copyright 2004-2011 Apple Computer, Inc., Mozilla Foundation, and
+ * Opera Software ASA. You are granted a license to use, reproduce
+ * and create derivative works of this document.
+ */
+
+// http://www.whatwg.org/specs/web-apps/current-work/#the-html-element
+interface HTMLHtmlElement : HTMLElement {};
+
+// http://www.whatwg.org/specs/web-apps/current-work/#other-elements,-attributes-and-apis
+partial interface HTMLHtmlElement {
+           [SetterThrows, Pure]
+           attribute DOMString version;
+};