Before, the run stages of tests in a batch were run separately by
multiple subprocesses. Now the run stages of tests in a batch are
batched together and run by a single subprocess.
Changes how results are logged. Tests in a batch are logged together.
Within a batch, tests that fail at the same stage are also logged
together.
Bug: angleproject:4817
Change-Id: Ie3f992c081de914f1f1f521bec2d72f06ccca238
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2331738
Commit-Queue: Manh Nguyen <nguyenmh@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Cody Northrop <cnorthrop@google.com>
