Using DuckDuckGo in Chrome is like asking for privacy while walking around naked in Times Square. Chrome has 100% unrestricted access to anything your user can access on your PC, no matter what search engine you choose.
replies(2):
Do the autocomplete results still go to google? If so, then enabling DDG on chrome is indeed fruitless.
"If a file isn’t from a known source, Chrome sends the URL and IP of the host and other meta data, such as the file’s hash and binary size, to Google."
[1] http://blog.chromium.org/2012/01/all-about-safe-browsing.htm...
[2] http://superuser.com/questions/387724/how-to-disable-downloa...