It's a scam.
To check if this is has any relation to Google or not, type into Google
"2015 Annual Visitor Survey". Unsurprisingly, we find that this is a scam. This particular scam is described in various forms at e.g. Fake Google Chrome Questionnaire - "2015 Annual Visitor Survey" and Malware Tips describes how to remove this:
If you are seeing random pop-up ads from 2015 Annual Visitor Survey within Internet Explorer, Firefox and Google Chrome, then your computer is infected with an adware or a potentially unwanted program.
Participating in surveys with rewards.
(This part of the question is a partial duplicate of Are competitions haram?.)
Since it's a scam, we can't be sure about the tricks the scammers might use; they might deceive you into doing something haram. However, suppose it weren't a scam (it is, but just hypothetically).
The only problem would be if it were a form of gambling, but this doesn't apply since there's no entry fee. Islam Q&A said this would be permissible.