Convert ReferenceUpdateEvent class to AutoValue

ReferenceUpdateEvent is a value class, in Gerrit value classes are
implemented with AutoValue. Using AutoValue reduce boilerplate code
and prevents error-prone code.

Bug: Issue 11573
Change-Id: I34584661db3bf70fcb1fc177a57dab6037f425ac
1 file changed
tree: 8de0a77c63ecec3a4768b90c7f70b26e7fdc8d86
  1. .settings/
  2. src/
  3. .gitignore
  4. .mailmap
  5. BUILD
  6. LICENSE