Previously we were trying to use the packed enum types for our replay.
This wouldn't work as the packed enum types don't exist outside of
ANGLE.

Bug: angleproject:3611
Change-Id: Id0d5c9f37304b30c204bac9bc7873661b035f918
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754324
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>