How to Use the Chrome OS Desktop on Windows 8
 

Chrome 32 now offers a new feature on Windows 8: A full-screen, Chrome OS-style desktop mode. The Chrome app launcher can bring Chrome OS to the Windows desktop, but Chrome can now replace the Windows desktop entirely.

Rather than create native Windows 8 apps, Google is choosing to shoehorn the a Chromebook-style desktop into Windows 8. Of course, you can continue to use Chrome on the desktop just like before.

http://www.howtogeek.com/179980/how-...why-it-exists/