tree f035bed4aaf255ef837ab5b7c42e2b8345d24955
parent ea2076d064f474809968a6092f74841bb2e8790b
author Joe Tsai <joetsai@digital-static.net> 1559690400 -0700
committer Joe Tsai <joetsai@digital-static.net> 1559764394 +0000

internal/impl: abstract away ExtensionDescV1 as the underlying descriptor

Add ExtensionField.{SetType,GetType} to hide the fact that the underlying
descriptor is actually an ExtensionDescV1.

Change-Id: I1d0595484ced0a88d2df0852a732fdf0fe9aa232
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/180538
Reviewed-by: Damien Neil <dneil@google.com>