The internal/impl and internal/legacy packages are only visible from packages
within the v2 repository. However, selected parts of these packages need to
be visible from the v1 repository or from generated code.
Change-Id: I1d87227dacc38f5b1ac464e9b9dd43bd34559cda
Reviewed-on: https://go-review.googlesource.com/c/151858
Reviewed-by: Herbie Ong <herbie@google.com>
