These were missing and are in the spec.

BUG=angleproject:1228

Change-Id: Ife9d311e76662d467d06b7aec4e674f9699b3573
Reviewed-on: https://chromium-review.googlesource.com/362624Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>