To observe whether the flaky issues still show up with the feature
disabled.

Bug: angleproject:3349

Change-Id: I0eae861ad76212fb4a65b57c1e1b5e8c583d6a3b
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1571027Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jie A Chen <jie.a.chen@intel.com>