Tests: Add Portal Knights trace Test: angle_trace_tests --gtest_filter="*portal_knights*" Bug: angleproject:7919 Change-Id: Ie11fd45afdd2cb70d1caef2e0006ba26ac5fdf25 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4129107 Reviewed-by: Roman Lavrov <romanl@google.com> Commit-Queue: Cody Northrop <cnorthrop@google.com>