tree d1153018ead84f0ae169cc5eea4248ffd4787b22
parent 1dab2cb0adb3967eba00dea1059be83464d67455
author Damien Neil <dneil@google.com> 1538088665 -0700
committer Damien Neil <dneil@google.com> 1538169599 +0000

protogen: add an option to rewrite import paths

This allows us to implement the import_prefix parameter in the v1
protoc-gen-go.

Drop support for import_prefix in protogen, and explicitly produce an
error if it is used in the v2 protoc-gen-go.

Change-Id: I66136b6b3affa3c0e9a93dc565619c90c42c0ecc
Reviewed-on: https://go-review.googlesource.com/138257
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>