Since we no longer have to call out to obtain the buildbot_spec, merge
the two functions in vars API. As a side effect, this applies
default_env to the sync steps as well, which shouldn't have an
appreciable effect on bot behavior.
BUG=skia:5578
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2209343002
Review-Url: https://codereview.chromium.org/2209343002
- builder_name_schema becomes its own recipe module.
- builder_spec, dm, and nanobench flags move into vars module.
- recipe expectation diffs include:
- no more buildbot_spec.py step
- "real" dm and nanobench flags, instead of --dummy-flags
- some inconsequential stuff in visualbench, which is removed anyway.
BUG=skia:5578
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2215803002
Review-Url: https://codereview.chromium.org/2215803002
