Google's Chrome autofill feature poses security risks
Although the autofill feature is comfortable to use (for systems used by a single person), it should be avoided since it is proven to be a risk. A victim could offer to any https webpage sensitive data such as credit card number and expiration date, without the victim noticing.
To avoid this problem (or any other potential one in the future), the best remedy by now is to simply not use this functionality.
See the full explanation here - http://blog.elevenpaths.com/2013/10/how-to-take-advantage-of-chrome.html