Tests: Add Romancing Saga trace Test: angle_perftests --gtest_filter="*romancing_saga*" TBR: jmadill@google.com,timvp@google.com Bug: angleproject:5622 Change-Id: I9f35fd0e0b9897e77f8d56547c2c134638b8b685 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2679323 Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Cody Northrop <cnorthrop@google.com>