The http/tests/xmlhttprequest/origin-exact-matching.html layout test is flaky on GTK+. Sometimes it timeouts.
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>
<rdar://problem/64182819>