tree 235a29e426bb3a151468ee62b3e3c673afdce9d0
parent 8e506a8704ce9ca738f25730c09a9ab0d876cf90
author Joe Tsai <joetsai@digital-static.net> 1552946074 -0700
committer Joe Tsai <thebrokentoaster@gmail.com> 1552950672 +0000

cmd/protoc-gen-go: only depend on v2 proto package

This CL breaks another dependency of v2 on v1.
A missing feature in v2 is proto.Clone, but we can use a
Marshal/Unmarshal roundtrip to achieve the same effect
as a temporary stop-gap.

Change-Id: I9d0432fd3efe9fc8b34db6c5a1eabbef0c36277c
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/168217
Reviewed-by: Damien Neil <dneil@google.com>