diff -r 000000000000 -r 6474c204b198 xpfe/components/windowds/nsIWindowDataSource.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpfe/components/windowds/nsIWindowDataSource.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,17 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 "nsISupports.idl"
+#include "nsIDOMWindow.idl"
+
+// interface for accessing RDF-specific data from the window datasource
+[scriptable, uuid(3722A5B9-5323-4ed0-BB1A-8299F27A4E89)]
+interface nsIWindowDataSource : nsISupports
+{
+    /**
+     * for the given resource name, return the window
+     */
+    nsIDOMWindow getWindowForResource(in string inResource);
+};