1045ef1ceb
Mostly this is adding an abstraction so we can produce the jsonl files that will allow us to track the status of each test individually. On a separate CL I'll be moving the tests out of the current unit tests into their own step in the test matrix. Change-Id: Id4537db1458949370195124164b120b49a7a526c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/104384 Commit-Queue: Sigmund Cherem <sigmund@google.com> Reviewed-by: Johnni Winther <johnniwinther@google.com>