Before including new features in Chrome, those new features are tested in chromium, the open source version of Chrome, which is the basis of the compilation of Chrome.
All we say about Chrome can be said about Chromium, in fact, Chrome is the perfect version of Chromium, but we can ensure that Chromium works really well.
Speed, performance, independency, Omnibox, web applications, theme support, Google Gears, download manager, bookmark synchronization, add-ons, etc.
The only bad thing about Chromium is that it is updated frequently, but if you want to be the first to try new features, this is the web browser you need. Remember, the early bird catches the worm.