diff -r 000000000000 -r 6474c204b198 dom/webidl/MozNamedAttrMap.webidl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/webidl/MozNamedAttrMap.webidl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,25 @@
+/* -*- 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/. */
+
+/**
+ * This is a temporary, non-standard interface, to ease the transition to a
+ * world where Attr no longer inherits from Node.
+ */
+interface MozNamedAttrMap {
+  getter Attr? getNamedItem(DOMString name);
+  [Throws]
+  Attr? setNamedItem(Attr arg);
+  [Throws]
+  Attr removeNamedItem(DOMString name);
+
+  getter Attr? item(unsigned long index);
+  readonly attribute unsigned long length;
+
+  Attr? getNamedItemNS(DOMString? namespaceURI, DOMString localName);
+  [Throws]
+  Attr? setNamedItemNS(Attr arg);
+  [Throws]
+  Attr removeNamedItemNS(DOMString? namespaceURI, DOMString localName);
+};