In addition enable affected tests.

Bug: angleproject:5955
Change-Id: I4fb72e38a633daa4565d3c0ae7cddb6ace7226f1
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2891775
Commit-Queue: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Cody Northrop <cnorthrop@google.com>