The upcoming Google Chrome release will bring Chrome OS feature into Windows 8. For your information, Google’s Chrome OS is a free operating system and the developer version of the Chrome browser for Windows comes with the app menu, dock-like taskbar, and Google Apps integration.
According to The Verge,
The latest developer builds of Google Chrome for Windows 8 feature a completely redesigned experience when running in Microsoft’s “Metro” view.
You can also create more than one browser window within the browser itself and move them around the screen like traditional windows in other operating systems.[Source] TheVerge