diff -r 000000000000 -r 6474c204b198 toolkit/devtools/DevToolsUtils.jsm
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/devtools/DevToolsUtils.jsm	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,18 @@
+/* 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/. */
+
+"use strict";
+
+/*
+ * General utilities used throughout devtools.
+ *
+ * When using chrome debugging, the debugger server is unable to debug itself.
+ * To avoid this, it must be loaded with a custom devtools loader with the
+ * invisibleToDebugger flag set to true. Everyone else, though, prefers a JSM.
+ */
+
+this.EXPORTED_SYMBOLS = [ "DevToolsUtils" ];
+
+const { devtools } = Components.utils.import("resource://gre/modules/devtools/Loader.jsm", {});
+this.DevToolsUtils = devtools.require("devtools/toolkit/DevToolsUtils.js");