This bug was created to track the layout test failure of LayoutTests/fullscreen/exit-full-screen-iframe.html. This test should pass on all ports which implement the FULLSCREEN_API.
See bug 90708 for the same failure in Mac port.
This test appears to be mostly passing but sometimes failing, so I'm marking it as flaky; I'm not sure why this would be the case. http://trac.webkit.org/changeset/128946