tree b66d61b39e6d5efc45d04dce5ef6e76522b8a67f
parent cc6ce78eafd3d3d19f526cf5cc574c66945af40b
author Natalie Weizenbaum <nweiz@google.com> 1464828960 -0700
committer Natalie Weizenbaum <nweiz@google.com> 1464828960 -0700

Make the VersionUnion class public.

This is the first of several pub_semver changes to support my solver
work.

R=rnystrom@google.com

Review URL: https://codereview.chromium.org//2029263003 .