Chrome OS uses X11. The idea that Chrome is running Windows Flash Player under some kind of Wine wrapper is ridiculous IMO.
(Note to people that think this is true; install f-spot on Linux some time. It's a C# application, and ends in .exe. Even though it has nothing to do with Windows, except that Microsoft spec'd C# and Microsoft makes Windows...)
Picasa for example is emulated through wine on Linux/Mac, but that's because it was developed originally for Win32.
Wine and WineLib are different things.