For re-tracing.

Bug: angleproject:5811
Change-Id: I1b58b33e0641cbd6a6aba10f936b76b5a9eca589
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2797831Reviewed-by: Cody Northrop <cnorthrop@google.com>
Commit-Queue: Jamie Madill <jmadill@chromium.org>