GitLab

Summary:
Pull Request resolved: https://github.com/facebookresearch/d2go/pull/310

One step towards using runner class across board. This is also need for supporting LazyConfig (which is runner-less)

Reviewed By: mcimpoi

Differential Revision: D37294926

fbshipit-source-id: f6dfc0a1103bac328ac7b337ce3aaefd5d8d85b4