Reference AccountVisibility from correct package

Gerrit-core moved AccountVisibility to extensions in I0e88e05ca2. This
broke the reviewers plugin. This commit fixes it.

Change-Id: I8492e450e6bb78d94a1f47a39184695cd87ac3b7
1 file changed
tree: d4f0989786cf5ab7e089ab3657ddfbacf98b5ef4
  1. src/
  2. tools/
  3. .gitignore
  4. bazlets.bzl
  5. BUILD
  6. LICENSE
  7. WORKSPACE