Bug 1313776 - Fix frequent OSX debug bc6 failures with The mochitest suite, r=mikedeboer

MozReview-Commit-ID: 34mzWaM4vef

--HG--
extra : rebase_source : 413eff80ec36539a29d03b321fe5e5c124b2c249

browser/components/sessionstore/test/browser.ini

@@ -235,6 +235,6 @@ run-if = e10s
 [browser_background_tab_crash.js]
 run-if = e10s && crashreporter
 
-# Disabled on Linux debug for frequent intermittent failures:
+# Disabled on debug for frequent intermittent failures:
 [browser_undoCloseById.js]
-skip-if = os == "linux" && debug
+skip-if = debug