This is necessary for the T-Rex benchmark.

Bug: angleproject:3611
Change-Id: I4573f8e86356272364baaccc678494707d2eebc0
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1893571Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com>
Commit-Queue: Jamie Madill <jmadill@chromium.org>