diff -r 000000000000 -r 6474c204b198 dom/interfaces/apps/nsIDOMApplicationRegistry2.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/interfaces/apps/nsIDOMApplicationRegistry2.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+/* 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 "nsIDOMApplicationRegistry.idl"
+
+interface nsIDOMDOMRequest;
+
+// This interface is still here for backwards compatibility.
+[scriptable, uuid(5bd838b2-cf3d-406e-bbef-f633cf9e68de)]
+interface mozIDOMApplicationRegistry2 : mozIDOMApplicationRegistry
+{
+};