Also correct the enum allocation to values that are available to ANGLE. BUG=angleproject:1635 Change-Id: I443f5654aa6a5049b4a1ae4c253cd6473b4e446e Reviewed-on: https://chromium-review.googlesource.com/520002 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org>
