diff -r 000000000000 -r 6474c204b198 docshell/test/unit/head_docshell.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/docshell/test/unit/head_docshell.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+/* 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/. */
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cr = Components.results;
+
+var dirSvc = Cc["@mozilla.org/file/directory_service;1"].
+             getService(Ci.nsIProperties);
+var profileDir = do_get_profile();