tree ba1e83964454d6cf2a9523a0d7f5e47a3d42c2a4
parent 97e7f57dbbb8fd7077f834b0ac0b1bb47cd9fe98
author Joe Tsai <joetsai@digital-static.net> 1544475368 -0800
committer Joe Tsai <thebrokentoaster@gmail.com> 1544478786 +0000

reflect/protoreflect: remove DescriptorProto method

The DescriptorProto method was originally intended to return a raw descriptor.
However, that functionality will be responsibility of the protodesc package
in the near future.

Also document that any callers of Options must import the descriptor package.
This is reasonable since any usage of that method will almost always be of
the form:
	fd.Options().(*descriptorpb.FieldOptions)

Change-Id: I1085f02305faef8dd724e0cb3ad45ac12bd5df0a
Reviewed-on: https://go-review.googlesource.com/c/153497
Reviewed-by: Damien Neil <dneil@google.com>