This thing stores saved passwords in plain text. Like everything else in IT, it has security vulnerabilities which will need to be managed. This will bypass group policy restrictions preventing the use of plugins, downloading of files/web-fonts, etc and has no central management functionaltiy. Google is likely to enable it for accessing GMail, Google Enterprise Apps, etc - which means large companies and governments are not going to be happy about this at all. They may have just killed off quite a bit of their enterprise credibility here...