The fast/images/animated-gif-body-outside-viewport.html layout test is timing out on GTK+ since r177265 (https://trac.webkit.org/changeset/r177265).
This revision updates the test to use shouldBecomeEqual() instead of a setTimeout() + shouldBe(). The test was failing before that.
The test filed under this bug has been passing consistently in the last 4000 revisions. The test was removed from expectations in r262797. Closing bug.
Committed r262811: <https://trac.webkit.org/changeset/262811>