fast/dom/Window/alert-undefined.html freezes when run after accessibility tests, presumably because of SpinRunLoopWhileWaitingForReply. This happens on bots in practice, causing flakiness. To reproduce, run-webkit-tests -2 accessibility/spinbutton-value.html fast/dom/Window/alert-undefined.html -v --child-processes=1
<rdar://problem/15878428>
*** This bug has been marked as a duplicate of bug 127439 ***