By Jelani Scott As one of the NFL’s best left tackles, San Francisco 49ers star Trent Williams’s reputation precedes him. But, in case that wasn’t already clear, one look at the veteran’s “locker” should drive that point home. On Saturday, a video showcasing Williams’s impressively sizable set-up in the Niners locker room made the rounds on social media, giving fans an idea of just how much space the 6′ 5″, 320-pound offensive lineman has at his disposal. The clip didn’t include an appearance from Williams but showcased his not one but two lockers and their accompanying accoutrements. Fittingl…