Add a collection of functions which take a reflect.*Descriptor and
return the corresponding google.protobuf.*DescriptorProto.
Change-Id: Ic186c412c8d3b7bc582c31bb8d8274459ce51a20
Reviewed-on: https://go-review.googlesource.com/c/159761
Reviewed-by: Herbie Ong <herbie@google.com>
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
