I wouldn't be surprised it this was intended to help bing discover deep web. If it's the case, combine that with the ability on bing to do "ip:<ip>" searches, and you have a formidable tool for forensics.
I agree with this. I know that when I've done webdev and when I check out a unique sandbox url (like jumbled letters with no backlinks) for a page I'll design, I use to see GoogleBot crawl that page eventually in the logs. (guess what browser I was using...Chrome)
Chrome has all kinds of services like "resolve navigation error", "URL prediction" and "usage statistics".
That Chrome sends your URLs out there on the Internet isn't exactly a secret.
If it bothers you, you can disable some of the features under 'Privacy' on:
chrome://settings/
The difference here is that Chrome doesn't pretend to be a secure communication channel like Microsoft claims Skype is.
