EA's branches of WebKit, available at http://gpl.ea.com, are designed for integration into console video games and don't require any sort of X server or OS interface. It's not the most up-to-date but it's sufficiently modularized to adhere to the LGPL without violating the Sony/Microsoft developer agreements.
This might be interesting. Remember to check all of the products listed, as we only release our latest EA WebKit version when a game ships with it.
"EA WebKit supports Win32, Win64, Playstation 3, and Xbox 360 platforms" according to the documentation, but perhaps the modularization and the EA Raster primitives gets you further along than some of the other forks.
If anyone has any questions about EA WebKit, let me know and I can pass them along.
EDIT: ...Or you can ask the parent poster, who actually works on them. :)
