Partial revert of 268586@main. It may have caused higher variance in MotionMark subtest.
<rdar://problem/117769143>
Pull request: https://github.com/WebKit/WebKit/pull/19802
Committed 270039@main (14c5b4a39952): <https://commits.webkit.org/270039@main> Reviewed commits have been landed. Closing PR #19802 and removing active labels.
Re-opened since this is blocked by bug 264060