LayoutTest http/tests/xmlhttprequest/on-network-timeout-error-during-preflight.html is timing out https://build.webkit.org/results/Apple%20iOS%2010%20Simulator%20Release%20WK2%20(Tests)/r209776%20(2382)/results.html https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Ftests%2Fxmlhttprequest%2Fon-network-timeout-error-during-preflight.html
May have started with https://trac.webkit.org/changeset/209776
Created attachment 297106 [details] Patch
http://trac.webkit.org/changeset/209819