3 medium (1 lb. 5 oz. total) ears fresh shucked yellow corn chopped (about 2 tsp.) 1 3/4 cups lower-sodium chicken broth 10 ounces (6 medium) baby red potatoes, cut into 1/2-inch pieces 1 teaspoon kosher salt 1/4 teaspoon black pepper 8 ounces medium-size peeled, deveined raw shrimp 2 tablespoons heavy cream 2 tabl