diff -r 000000000000 -r 6474c204b198 dom/interfaces/traversal/nsIDOMNodeIterator.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/interfaces/traversal/nsIDOMNodeIterator.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+/* -*- 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"
+
+interface nsIDOMNodeFilter;
+
+[scriptable, uuid(a86bdac9-ff89-4c94-8160-4fe86733bab8)]
+// Introduced in DOM Level 2, updated to DOM Level 4:
+interface nsIDOMNodeIterator : nsISupports
+{
+  readonly attribute nsIDOMNode       root;
+  readonly attribute unsigned long    whatToShow;
+  readonly attribute nsIDOMNodeFilter filter;
+  nsIDOMNode         nextNode()
+                                        raises(DOMException);
+  nsIDOMNode         previousNode()
+                                        raises(DOMException);
+  void               detach();
+
+  // WebKit extensions, convenient for debugging.
+  readonly attribute nsIDOMNode referenceNode;
+  readonly attribute boolean    pointerBeforeReferenceNode;
+};