Tac, you either have some software from Google installed, in which case, you will have to get rid of it, or your computer is being victimized by malware/spyware pretending to be Google.
Just as an aside, Google is not a company to be trusted. Try blocking a Google cookie. Most of the browsers cannot block them as Google has figured out how to get around most blocks you can place in the browser.
The recent Wifi fiasco where Google was caught stealing personal data from users should be enough to give anyone some level of concern over anything related to Google.