Hi. I'd be interested in working on this project. I've worked on cross-browser plugins before, using a framework called Firebreath (C++). This framework enables the same browser plugin to work across a variety of browsers, including FIrefox and Chrome (and also on different OSs - Windows/Linux/Mac). I also have experience with browser extensions, which I think is actually what you want, but these are details that can be discussed later. My schedule is pretty free at the moment, so I could start working as soon as the bid is accepted.
Cheers,
Zozel