SSIA It is to merge: https://src.chromium.org/viewvc/blink?view=revision&revision=197013 but I took test from Blink / Chromium ToT. Thanks!
Committed 272888@main (f6d4c6154380): <https://commits.webkit.org/272888@main> Reviewed commits have been landed. Closing PR #22511 and removing active labels.
<rdar://problem/120826537>