TestWebKitAPI.WebKit.PerformedActionForURL seems flaky. In http://ews-build.webkit-uat.org/#/builders/19/builds/2410, the test Failed in run-api-tests step. However, in the immediately next retry step (re-run-api-tests), it passed.
This test was added recently in http://trac.webkit.org/changeset/243319/webkit
<rdar://problem/49159257>
Created attachment 365744 [details] Patch
http://trac.webkit.org/r243946