infra/proto vs chromite/infra/proto
This repository exists in two locations in the tree:
infra/proto repository is always at ToT,
chromite/infra/proto checkout is branched to allow the proto there
to (more) accurately reflect the version of the proto the Build API is using.
When making changes to the proto that you need to test in the Build API, you
will need ensure the changes are applied to the
Chromite generates its proto bindings from the