diff -r 000000000000 -r 6474c204b198 extensions/cookie/test/unit/cookieprompt.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/extensions/cookie/test/unit/cookieprompt.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,22 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+
+const Ci = Components.interfaces;
+
+function CookiePromptService() {
+}
+
+CookiePromptService.prototype = {
+  classID: Components.ID("{509b5540-c87c-11dd-ad8b-0800200c9a66}"),
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsICookiePromptService]),
+
+  cookieDialog: function(parent, cookie, hostname,
+                         cookiesFromHost, changingCookie,
+                         rememberDecision) {
+    return 0;
+  }
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([CookiePromptService]);