Bug 1263227 - Include head.js in support-files in toolkit/mozapps/extensions/test/browser/browser.ini to avoid failures when running individual tests locally. r=mossop

MozReview-Commit-ID: G5p2C8kAmBE

--HG--
extra : rebase_source : 1b6a5e122e024adfa53c31a16b319c86c2eccf85

toolkit/mozapps/extensions/test/browser/browser.ini

@@ -9,6 +9,7 @@ support-files =
   discovery.html
   discovery_frame.html
   discovery_install.html
+  head.js
   signed_hotfix.rdf
   signed_hotfix.xpi
   unsigned_hotfix.rdf