Paint timing is currently in an experimental flag, need to enable by default for it to be available.
Created attachment 399037 [details] Patch
Committed r265043: <https://trac.webkit.org/changeset/265043> All reviewed patches have been landed. Closing bug and clearing flags on attachment 399037 [details].
<rdar://problem/66276320>
Re-opened since this is blocked by bug 214959
Created attachment 409124 [details] Patch for landing
Committed r267235: <https://trac.webkit.org/changeset/267235> All reviewed patches have been landed. Closing bug and clearing flags on attachment 409124 [details].
Enabling paint timing was reverted in rr273207 because it caused a MotionMark regression. We need to ensure that paint timing is not running continuously while animating the MotionMark tests.
*** Bug 222250 has been marked as a duplicate of this bug. ***
Created attachment 421146 [details] Patch
Committed r273221: <https://commits.webkit.org/r273221> All reviewed patches have been landed. Closing bug and clearing flags on attachment 421146 [details].