r292163 broke the PlayStation builds due to not having all the necessary pieces. Bug 238677 would fix this as the WPE stuff is not enabled on the bots, however may break some internal builds. So, in the meantime, re-disable WebDriver (without undoing the other parts of r282163).
Created attachment 456609 [details] [fast-cq] Turn off WebDriver feature
Committed r292313 (249206@main): <https://commits.webkit.org/249206@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 456609 [details].
<rdar://problem/91256655>