The layout test media/video-controls-drag.html added on r173764 <http://trac.webkit.org/r173764> timeouts on GTK Probable cause: Check https://bugs.webkit.org/show_bug.cgi?id=136837
I marked this tests as timing out on the GTK TestExpectations on r174685 <http://trac.webkit.org/r174685>. Please remove it from the expectation file when fixing this bug.