Bug 893572 - Add tests. r=Bas, r=mattwoodrow, a=test-only
Bug 950367 - Random failures in test_bug462106_perwindow.xul. r=ehsan, a=test-only
Bug 950342 - Random failures in toolkit/components/places/tests/browser/browser_visituri_privatebrowsing_perwindowpb.js. r=ehsan, a=test-only
Bug 867505 - Intermittent test_bug536567_perwindowpb.html. r=ehsan, a=test-only