I think it's beyond Left and Right. Google, like most companies and individuals, is self interested. When something benefits Google, they'll pursue it, regardless of where it falls on the ideological spectrum.

Unions? That's bad for business owners, so Google is against. Diversity? That increases the number of workers you can have, so Google is in favor of it. Immigration? Google's in favor, for the same reason. More taxes on tech companies? Google's against, etc.