Enable VTB required low latency code path
<rdar://problem/61890332>
Created attachment 397823 [details] Patch
Created attachment 400570 [details] Patch for landing
Created attachment 400572 [details] Patch for landing
Committed r262290: <https://trac.webkit.org/changeset/262290> All reviewed patches have been landed. Closing bug and clearing flags on attachment 400572 [details].
Re-opened since this is blocked by bug 212638
Created attachment 403449 [details] Patch
Tools/Scripts/svn-apply failed to apply attachment 403449 [details] to trunk. Please resolve the conflicts and upload a new patch.
Created attachment 403515 [details] Rebasing
Committed r263931: <https://trac.webkit.org/changeset/263931> All reviewed patches have been landed. Closing bug and clearing flags on attachment 403515 [details].