This is the original forum thread where that was first reported and why the pull was submitted later. Saleem made a case that we should try to match all Foundation APIs across platforms as much as we can, which I agree with in principle, though there appeared to be some skepticism from others about how much these Process APIs would even be used on Android.
While I have little idea how useful these three methods would be on Android myself, they do seem easy to implement, so not sure why anyone would complain about finally filling this small gap.