There are two kinds of configs: global and ref-specific.
Apply to the whole repo regardless of the ref (branch).
Located in global directory.
Currently active version can be checked at https://luci-config.appspot.com/#/projects/angle .
Apply only to a ref(branch) they are located in.
Located in branch directory.
Currently active version can be checked at
https://luci-config.appspot.com/#/projects/angle/<ref> # For example, for master branch: # https://luci-config.appspot.com/#/projects/angle/refs/heads/master