Trace tests: extract debug files to (CAS) output Follow up on https://crrev.com/c/5361574 which works for gold test but not perf tests which use temporary directory for output files Bug: b/296921272 Change-Id: Idfc75839cf2cadde44da1567b7347be7c6520bdf Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5365307 Commit-Queue: Roman Lavrov <romanl@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>