Our platform doesn't use it because of the memory situation.
Created attachment 441462 [details] PATCH
Comment on attachment 441462 [details] PATCH r=me
Comment on attachment 441462 [details] PATCH Thanks!
Committed r284306 (243104@main): <https://commits.webkit.org/243104@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 441462 [details].
<rdar://problem/84327462>