Add option to DDL test harness to better match OOP-R behavior

Change-Id: I043613c127dbfa1ebb7dcf5eab7b996afb676b61
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/296449
Reviewed-by: Adlai Holler <adlai@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
5 files changed