.
Created attachment 451068 [details] WIP
Created attachment 451150 [details] Patch
Created attachment 451155 [details] Patch
Created attachment 451200 [details] Patch
Committed r289378 (246966@trunk): <https://commits.webkit.org/246966@trunk>
<rdar://problem/88631902>
To be clear, this is just about testing, right? Doesn't actually do what the title says, does it?
yes, sorry.