diff -r 000000000000 -r 6474c204b198 dom/interfaces/core/nsIDOMMozNamedAttrMap.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/interfaces/core/nsIDOMMozNamedAttrMap.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+/* -*- 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/. */
+
+#include "domstubs.idl"
+
+/**
+ * This is a temporary, non-standard interface, to ease the transition to a
+ * world where Attr no longer inherits from Node.
+ */
+
+[scriptable, uuid(cb5564cd-26ec-418f-a6d6-1d57cd2c971c)]
+interface nsIDOMMozNamedAttrMap : nsISupports
+{
+  nsIDOMAttr                getNamedItem(in DOMString name);
+  nsIDOMAttr                setNamedItem(in nsIDOMAttr arg)
+                                  raises(DOMException);
+  nsIDOMAttr                removeNamedItem(in DOMString name)
+                                  raises(DOMException);
+  nsIDOMAttr                item(in unsigned long index);
+  readonly attribute  unsigned long        length;
+  // Introduced in DOM Level 2:
+  nsIDOMAttr                getNamedItemNS(in DOMString namespaceURI, 
+                                           in DOMString localName);
+  // Introduced in DOM Level 2:
+  nsIDOMAttr                setNamedItemNS(in nsIDOMAttr arg)
+                                  raises(DOMException);
+  // Introduced in DOM Level 2:
+  nsIDOMAttr                removeNamedItemNS(in DOMString namespaceURI, 
+                                              in DOMString localName)
+                                  raises(DOMException);
+};