These have been somewhat flaky on the waterfall.

Bug: angleproject:6019
Change-Id: I4d76411ab54ad5fbfb9c49775c44a12b99def846
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2945430
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>