Add KillOldProcesses step before running API or Layout tests in order to add more stability, and ensure that a build is not impacted by leaked processes from previous build.
Created attachment 373670 [details] Patch
Comment on attachment 373670 [details] Patch Clearing flags on attachment: 373670 Committed r247242: <https://trac.webkit.org/changeset/247242>
All reviewed patches have been landed. Closing bug.
<rdar://problem/52807045>