diff -r 000000000000 -r 6474c204b198 dom/webidl/ErrorEvent.webidl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/webidl/ErrorEvent.webidl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,23 @@
+/* -*- 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/. */
+
+[Constructor(DOMString type, optional ErrorEventInit eventInitDict)]
+interface ErrorEvent : Event
+{
+  readonly attribute DOMString message;
+  readonly attribute DOMString filename;
+  readonly attribute unsigned long lineno;
+  readonly attribute unsigned long colno;
+  readonly attribute any error;
+};
+
+dictionary ErrorEventInit : EventInit
+{
+  DOMString message = "";
+  DOMString filename = "";
+  unsigned long lineno = 0;
+  unsigned long colno = 0;
+  any error = null;
+};