Now that the San Francisco 49ers have shifted from building their roster to turning the roster into their new team, it is a good time to review the depth chart and see where things stand. What does the 49ers' interior offensive line depth chart look like? San Francisco 49ers Left Guard Depth Chart Robert Jones  The big debate will be at left guard and who starts there. Jones has the most experience starting at guard in the NFL, and if it were not for an injury to him last year, he might be considered a surefire starter. He will get a legitimate chance.  Carver Willis Willis was drafted in Round 4 and played tackle in college, but he has a lot of traits that stand out in quality NFL guards. It will be a transition for him that might take time, so it is hard to say that he can start day one.  Connor Colby  Colby started last year, but the team benched him for Spencer Burford, then signed Jones and drafted Willis.…