mozilla-b2g/gaia — pull request #25554 by sfoster (2014-10-27 20:59:28+00:00)
Title: Bug 1089615 - Add filtered class soonest to avoid black-white flash

I cant think of a meaningful test for this. We could assert the class is there before showing the task manager, but that's not really the point - the outcome we want to assert on is that it doesnt flash black then white.