diff -r 000000000000 -r 6474c204b198 xpcom/tests/regorder/extension/extComponent.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/tests/regorder/extension/extComponent.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,38 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et: */
+/* 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/. */
+
+var gRegTestExtComponent =
+{
+  /* nsISupports implementation. */
+  QueryInterface: function (aIID)
+  {
+    if (!aIID.equals(Components.interfaces.nsISupports) &&
+        !aIID.equals(Components.interfaces.nsIFactory))
+      throw Components.results.NS_ERROR_NO_INTERFACE;
+
+    return this;
+  },
+
+  /* nsIFactory implementation. */
+  createInstance: function (aOuter, aIID)
+  {
+    if (null != aOuter)
+      throw Components.results.NS_ERROR_NO_AGGREGATION;
+
+    return this.QueryInterface(aIID);
+  },
+
+  lockFactory: function (aDoLock) {}
+};
+
+const kClassID = Components.ID("{fe64efb7-c5ab-41a6-b639-e6c0f483181e}");
+this.NSGetFactory = function NSGetFactory(cid)
+{
+  if (!cid.equals(kClassID))
+    throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
+
+  return gRegTestExtComponent;
+}