Yes, there is not much problem if somebody knows what extensions, bookmarks, or apps we are using, but what about if somebody gets our passwords, mailing address, phone number, or credit card details?
If you enabled sync option in Chrome, most likely your form autofill data (passwords, username, and other personal data) will also pushed to Google’s servers, only your passwords are encrypted now. Luckily, a new option has arrived to Google Chrome, which allows you encrypt all your sync data (see screenshot above) – (Via).