LayoutTest media/modern-media-controls/icon-button/icon-button-active-state.html is a flaky timeout
I cannot reproduce the timeout on Sierra WK1 Debug with the same run as the failing worker in https://build.webkit.org/builders/Apple%20Sierra%20Debug%20WK1%20(Tests)/builds/2882.
This hasn't timed out for over 3 days.
This is still flaky on mac-wk1. Reopening.
Marked as flaky in http://trac.webkit.org/projects/webkit/changeset/213459