Chris and I talked about a possible optimization of the HTML item stack, where we stop reference counting HTMLStackItem. Time to A/B test it.
Pull request: https://github.com/WebKit/WebKit/pull/818
<rdar://problem/94013375>
Committed r295262 (251308@main): <https://commits.webkit.org/251308@main> Reviewed commits have been landed. Closing PR #818 and removing active labels.