SISA.
Created attachment 397811 [details] Patch
Note that there are important steps to take when updating ANGLE. See http://trac.webkit.org/wiki/UpdatingANGLE
Comment on attachment 397811 [details] Patch LGTM but I don't have reviewer privileges. Maybe dino@ can help review.
Maybe achristensen@ can help review this too?
Committed r260852: <https://trac.webkit.org/changeset/260852> All reviewed patches have been landed. Closing bug and clearing flags on attachment 397811 [details].