So it seems pretty obvious that Google is only against software patents when they're used against Google or their partners. Google is a company out to protect their profits just like any other, they aren't some righteous warriors of justice. I find it very far-fetched to think that they could bring about the type of reform you're talking about.
Just like any other company. The notion that Google is some kind of white knight to evil Microsofts, Apples, etc. is naive at best, but more likely flat out wrong. They're there to make money and they'll be for/against software patents as it's convenient for them to be.
P.S. Obama mentioned patent reform in his speech today.
Talk is cheap.