The San Francisco 49ers are done with the NFL draft and there is not much more that will happen between now and the start of training camp. So it is a good time to look back on the depth chart and see where things stand. What does the running back room look like after free agency and the draft? San Francisco 49ers post-draft running back depth chart Christian McCaffrey  McCaffrey is obviously going to be the starter here. The question is how much do they lean on the depth and try to protect his wear and tear . After an unbelievable workload last year, the team should try to limit his snaps more this year.  Kaleon Black  The question is, who is going to be the backup running back? Black is just a rookie and was in a worse draft class, but Jordan James went two rounds later, and the team drafted Black, knowing that James could have been their option as the backup. Black also has a running style that complements McCaffrey, where James has a role that is more comparable to McCaffrey's skill set.…