We upstreamed the changes here so it is no longer necessary to maintain
a fork.

Bug: angleproject:3706
Change-Id: I21cc63cb94f8b3603d75ce8ec86b856514a8cb5d
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1749335Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com>
Reviewed-by: Tim Van Patten <timvp@google.com>
Commit-Queue: Jamie Madill <jmadill@chromium.org>