By Scarlett O’Toole Travis Barker delighted fans as he shared a brand new picture of his four-month-old child Rocky Thirteen, who he shares with Kourtney Kardashian. The Blink-182 drummer took to Instagram on Saturday to share a series of pictures from the band’s Australia and New Zealand tour. Among the snaps was an adorable picture of Rocky’s tiny foot resting on Travis’ drum kit. He also posted a picture with Kourtney as they posed behind a cardboard cut-out of a bride and groom, as well as snaps of himself performing on stage. “Tour was over, we’d survived,” Travis captioned the post. For …