I can't help but feel that this really isn't Google's fault. A simple heuristic to make recruiting grads simpler is to restrict yourself to the top universities (most companies do this) - but I bet that the CS programs for most of those universities have similar statistics.

As one datapoint, the program I'm on has a 8:1 male-female ratio, and of the 80 or so students on it, I believe that there is one black student.

It's a problem with all of CS - and Google have decent initiatives to help turn it around, but it's going to take time - more CS education in schools, more access programs to help those from deprived backgrounds get programming - and that'll sadly happen slowly.

Perhaps it's different in America (where one need not choose CS before university starts).