It will either be Hershey or Ghirardelli unless Universal wants to go all in and start roasting cocoa beans in house (take that NBCSports Grill Brew).
Disney did a similar thing with a coffee shop in DCA, where they roasted their own coffee beans. See, Disney knows people love the smell of coffee so they thought what better way to fill DCA's entrance corridor with the smell of coffee than roasting some beans? Well, the smell of coffee that people's mouths water over is the smell of "BREWED" coffee. Not the smell of roasting coffee beans. Which is pretty awful. Sort of a burnt popcorn smell.