Enables a bunch of self-tests. Bug: angleproject:5530 Change-Id: Idd14574ba0f3d44124e153ccb32fec7318baf217 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2647745Reviewed-by: Tim Van Patten <timvp@google.com> Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Jamie Madill <jmadill@chromium.org>
