diff -r 000000000000 -r 6474c204b198 dom/base/SiteSpecificUserAgent.manifest
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/base/SiteSpecificUserAgent.manifest	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,2 @@
+component {506c680f-3d1c-4954-b351-2c80afbc37d3} SiteSpecificUserAgent.js
+contract @mozilla.org/dom/site-specific-user-agent;1 {506c680f-3d1c-4954-b351-2c80afbc37d3}