By Alek Arend You weren’t just dreaming, Browns fans. Deshaun Watson’s tenure in Cleveland is officially underway. A video of the former Houston Texans quarterback arriving at the Browns’ facilities is going viral today. He’s already sporting team apparel. It’s not much, but the video has Browns fans amped up for the Deshaun Watson era. “Already reppin the brown and orange,” Barstool Cleveland tweeted. “The Best Quarterback in the AFC North is home!” a fan said. “New quarterback. Old school jacket,” Tom Withers wrote. “New #Browns jacket and all, Deshaun Watson is in the building,” said NFL in…