Hackathon fixes Merge upstream pull requests: - Decompress local files when running tests - Support url tests and tags param splitting Change-Id: Ibdf392d7c33b951e2f622c2cbfb875ac1777488f Reviewed-on: https://chromium-review.googlesource.com/c/external/github.com/WebKit/JetStream/+/7035653 Reviewed-by: Marja Hölttä <marja@chromium.org>