Bug 1244991 - Disable intermittent browser_backgroundTab.js on e10s. r=bustage

--HG--
extra : commitid : LLgmBT900EB
extra : amend_source : 5c0a1c6a713c82f1ec7c4728bd16fc9c7a421946

browser/components/uitour/test/browser.ini

@@ -6,6 +6,7 @@ support-files =
   ../UITour-lib.js
 
 [browser_backgroundTab.js]
+skip-if = e10s # Intermittent failures, bug 1244991
 [browser_closeTab.js]
 [browser_fxa.js]
 skip-if = e10s || debug || asan # Bug 1240747 - UITour tests not e10s friendly # updateAppMenuItem leaks