In rebaseline, include build number information with "test_prefix_list" dicts.
When rebaselining, the main argument passed to the rebaseline method is a "test_prefix_list", which is currently a dict mapping test prefixes to builder names to baseline file suffixes.
If we want to change _suffixes_for_actual_failures to fetch actual failures for try jobs, then that method needs to know the build number as well.
This CL would replace the builder in all "test_prefix_list" dicts with a Build object, which includes builder name and build number, but build number is optional.
Planned follow-up: changing build_data() to use a method to fetch and cache results for particular builds, and change _suffixes_for_actual_failures fetch results for particular builds using that method as well. This would make the "skip_checking_actual_results" workaround unnecessary. I could also include that change in this CL.
Review-Url: https://codereview.chromium.org/2144873004
Cr-Commit-Position: refs/heads/master@{#405783}
4 files changed
