media/controls-without-preload.html has been failing on WebKit2 since the expected results were updated in r78741. See the URL for the diff. I think the failure is due to fullscreen not being supported in WebKit2 (and thus the fullscreen button being omitted from the controls).
This is failing on both SnowLeopard and Windows.
Checked in expected failure results in r81329.
<rdar://problem/9147572>
The new results seem to be correct given that WebKit2 does not support fullscreen at the moment. They will have to be updated when fullscreen video is enabled. Closing.