Google built a browser. It is called Chrome. It will inevitably take over your life, then the internet, then humanity.
I am honestly a little ashamed to say I had no idea it was coming. Then I think about it and say, "Duh!" Then I think about it some more and say, "But Firefox is great and open source. What is the upside in this for Google?" The answer to that is a little more troubling, particularly if the browser sends usage data back to Google, and I think it will.