diff -r 000000000000 -r 6474c204b198 toolkit/mozapps/extensions/test/addons/test_install4/install.rdf
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/mozapps/extensions/test/addons/test_install4/install.rdf	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+
+<!-- A multi-package XPI -->
+<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+     xmlns:em="http://www.mozilla.org/2004/em-rdf#">
+
+  <Description about="urn:mozilla:install-manifest">
+    <em:type>32</em:type>
+  </Description>
+</RDF>