diff -r 000000000000 -r 6474c204b198 toolkit/components/url-classifier/nsUrlClassifierLib.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/url-classifier/nsUrlClassifierLib.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,35 @@
+# 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/.
+
+// We wastefully reload the same JS files across components.  This puts all
+// the common JS files used by safebrowsing and url-classifier into a
+// single component.
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const G_GDEBUG = false;
+
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+
+#include ./content/moz/lang.js
+#include ./content/moz/preferences.js
+#include ./content/moz/debug.js
+#include ./content/moz/alarm.js
+#include ./content/moz/cryptohasher.js
+#include ./content/moz/observer.js
+#include ./content/moz/protocol4.js
+
+#include ./content/request-backoff.js
+#include ./content/xml-fetcher.js
+
+// Expose this whole component.
+var lib = this;
+
+function UrlClassifierLib() {
+  this.wrappedJSObject = lib;
+}
+UrlClassifierLib.prototype.classID = Components.ID("{26a4a019-2827-4a89-a85c-5931a678823a}");
+UrlClassifierLib.prototype.QueryInterface = XPCOMUtils.generateQI([]);
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([UrlClassifierLib]);