This was added a debugging aid once upon a time. It is no longer needed.
<rdar://problem/105687040>
Pull request: https://github.com/WebKit/WebKit/pull/10373
Committed 260568@main (5e7a6ef27299): <https://commits.webkit.org/260568@main> Reviewed commits have been landed. Closing PR #10373 and removing active labels.