Address the last message-check-related FIXME in the GPU Process.
Created attachment 418296 [details] Patch
Comment on attachment 418296 [details] Patch Thanks for the review!
Committed r271800: <https://trac.webkit.org/changeset/271800> All reviewed patches have been landed. Closing bug and clearing flags on attachment 418296 [details].
<rdar://problem/73577385>