Add a style property to HTMLElement.

components/script/dom/webidls/ElementCSSInlineStyle.webidl

@@ -0,0 +1,11 @@
+/* -*- 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/. */
+
+//http://dev.w3.org/csswg/cssom/#elementcssinlinestyle
+
+[NoInterfaceObject]
+interface ElementCSSInlineStyle {
+  [SameObject, PutForwards=cssText] readonly attribute CSSStyleDeclaration style;
+};