We might prioritize things based on input from Google (we tend to listen to things Google's web properties have to say since they run some of the biggest websites on the planet). This is usually a collaboration between the technical folks at both organizations to drive things that are best for the web.
We're not going to implement things that we think are bad for the web just because Google says so. You can look around to see what Brendan Eich (CTO of Mozilla, a higher up by any definition) has to say about Dart and NaCl. Google's money doesn't buy our cooperation on these kinds of issues (and it's worth noting that we work with plenty of people who aren't paying us money, such as Facebook, the same way that we work with Google).
We're not going to implement things that we think are bad for the web just because Google says so. You can look around to see what Brendan Eich (CTO of Mozilla, a higher up by any definition) has to say about Dart and NaCl. Google's money doesn't buy our cooperation on these kinds of issues (and it's worth noting that we work with plenty of people who aren't paying us money, such as Facebook, the same way that we work with Google).