It's easy: Layer > Layer Style > Bevel & Emboss > (modify the Depth & Size) then play with the "Gloss Contour"
Try that and lmk...Enjoy!
NOTE: If you're getting too much grey try Leveling the image AFTER applying the chrome effect. Crush the darks and enhance the contrast with that tool: "Levels".
P.S.: Sure you can go out and get a plugin but it's not really necessary. Like most things with Photoshop, if you REALLY learn the software, it comes capable of doing almost anything right out of the box.