Grease, spray, or line with parchment paper, three 8-inch cake pans.
Preheat oven to 350 degrees.
Place all dries for cake in a large mixing bowl and blend well with a wire whisk. In a large measuring cup, mix oil, water and vanilla and add to dries, mixing thoroughly with a whisk or wooden spoon.
Divide batter evenly among the three cake pans. Sprinkle chocolate chips evenly over the batter in each pan.
Bake for about 20-25 minutes, or until the cake tester comes out clean. Cool completely and remove from the pan. Spread frosting between each layer and cover the entire top and sides of the cake. Sprinkle top of the cake with dark chocolate shavings.