In an effort to support results database queries for API tests, we should support multiple suites in the ResultsDatabase class.
<rdar://problem/103601598>
Pull request: https://github.com/WebKit/WebKit/pull/7959
Committed 258202@main (4569ef02ba26): <https://commits.webkit.org/258202@main> Reviewed commits have been landed. Closing PR #7959 and removing active labels.