Chrome browser extensions - hooking into C functions?

I'm writing a Chrome extension and some parts of it need to be super high performance. I'm trying to find documentation to see if it's possible to use C extensions within the Chro开发者_JAVA技巧me extension. Is this currently possible?

Take a look at Native Client. You can write browser/web apps with NaCl via C or C++ (and Mono since 2.10). You can find a small tutorial here.