ITP should be off by default in ephemeral session tests, like it is for persistent/default session tests.
Created attachment 399739 [details] WIP Patch
Created attachment 399745 [details] Patch
Created attachment 399758 [details] Patch
Committed r261882: <https://trac.webkit.org/changeset/261882> All reviewed patches have been landed. Closing bug and clearing flags on attachment 399758 [details].
<rdar://problem/63410772>