Chocolate Chip Cheesecake Cake

Name: Chocolate Chip Cheesecake Cake
Prep time: 1 h
Cook time: 1 h 15 min
Total time: 2 h 15 min
Cuisine: American
Ingredients: Two 8-ounce packages cream cheese, at room temperature; 2/3 cup granulated white sugar; 1/2 teaspoon salt; 2 large eggs; 1/3 cup sour cream; 1/3 cup heavy whipping cream; 1 teaspoon vanilla extract; 1/2 cup miniature chocolate chips; One 15.25-ounce box white cake mix; 1 1/4 cups water; 1/3 cup canola or vegetable oil; 3 large egg whites; 1 cup miniature chocolate chips; 2 1/2 cups powdered sugar, sifted to remove lumps; 1/2 cup (1 stick) butter, at room temperature; 1 tablespoon vanilla extract; extra miniature chocolate chips, for garnish