The change in https://bugs.webkit.org/show_bug.cgi?id=183620 was a temporary compatibility fix as explained in https://webkit.org/blog/8311/intelligent-tracking-prevention-2-0/. We should remove it.
<rdar://problem/44780645>
Created attachment 350821 [details] Patch
Thanks, Alex! Let's see if the patch still applies. :P
Comment on attachment 350821 [details] Patch Clearing flags on attachment: 350821 Committed r236563: <https://trac.webkit.org/changeset/236563>
All reviewed patches have been landed. Closing bug.