BUG=967410

Change-Id: I503dda6f2493b56123a8bd369e2f1305971abb4e
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1364110Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
Commit-Queue: Geoff Lang <geofflang@chromium.org>