It was only three weeks ago that Google updated their Chrome web browser for a number of security flaws. The company has released another update, addressing three high-risk issues, and incrementing the version number to 16.0.912.75. None of these issues are serious enough to lose sleep over, but sometimes even the smallest vulnerabilities can be exploited.
As always, Chrome will update itself, so no need to worry about downloading anything on your own. Full information about the security fixes in the update is available here.