diff -r 000000000000 -r 6474c204b198 browser/metro/defs.mk
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/metro/defs.mk	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,1 @@
+XPI_ROOT_APPID={99bceaaa-e3c6-48c1-b981-ef9b46b67d60}