We need to consume GPU sandbox extensions earlier in the Web page creation flow so that API calls to thinks like muting video have the relevant mach connections available. This change corrects a regression introduced in Bug 218708 (r269647).
<rdar://problem/72058396>
Created attachment 415684 [details] Patch
Committed r270584: <https://trac.webkit.org/changeset/270584> All reviewed patches have been landed. Closing bug and clearing flags on attachment 415684 [details].