It isn’t blocking chrome, it is blocking access to what is considered a harmful page.

Given the my.blueadvertise domain name it appears that it is inserting adverts into your pages that you browse. Is this my.blueadvertise something that you installed, toolbar etc. ?

Not so long ago many adservers were poisoned in so much as instead of adverts they were delivering malicious content.

So what exactly are you doing when you get this alert ?
e.g/ just general browsing or actually at this site.