Gecko:First Bugs

Here are ideas for "first bugs" for new Gecko contributors to work on. Some more of this is currently at http://www.mozilla.org/contribute/hacking/first-bugs/.

Gecko:DeCOMtamination: Convert weird, ugly and inefficient method signatures to more natural C++ method signatures. It really improves code readability, reduces code size, and increases preformance. It's a bit tedious but it's extremely valuable and will help you learn the way around the codebase. We've done a lot, but there's a lot more to do. Anyone with reasonable C++ experience can do this.