I think Mozilla is making its browser more closer to Google Chrome by both functionality and look. For example, look at the latest UI mock-ups of Firefox appeared at Mozilla wiki. It has Chrome’s like settings menu at the right side of the navigation bar instead of its usual menu button.

Also, the implementation of new tab shape gives a feel of Chrome. Tabs now have a curved shape. Currently this testing version is available for Windows only. Interested users can try the new design by downloading the nightly build and see how your favorite browser looks like. [via]