tree 86664d15170039d0be6b5948e8a3b3c56c809753
parent 54001ae5120e5d7ae80b02018cbfdde65045674b
author Joe Tsai <joetsai@digital-static.net> 1557337556 -0700
committer Joe Tsai <joetsai@digital-static.net> 1557779610 +0000

internal/proto: use ParentFile instead of Parent

CL/176777 adds support for the ParentFile method.
Use that instead of manually looping to the parent.

Change-Id: I15f197e583cf8d687ff21a0957de69fe45f0fc8f
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/176000
Reviewed-by: Damien Neil <dneil@google.com>