As the previous links from STRATFOR etc. prove, Google is deeply embedded in the security/intelligence apparatus. That part is definitely willing and beneficial to both parties. Of course, they're going to make changes and issue statements to the contrary regarding PRISM, because that would lose them customers.
This is also an interesting read, albeit a bit long:
https://wikileaks.org/google-is-not-what-it-seems/
Google continues to coast on the goodwill of its "don't be evil" doublespeak, as Mr. Assange puts it. There's no reason to trust them now.