Refactor callers of RefControl#isVisible

This commit refactors callers to use PermissionBackend instead of
RefControl#isVisible and adds handling for PermissionBackendException on
EventDispatcher#postEvent.

Change-Id: Ic6378b0fd88cc770b061c551d0511d352a9f3d61
1 file changed
tree: d5af1c1d125de29b552d4a056e04bab75859e610
  1. .gitignore
  2. .mailmap
  3. .settings/
  4. BUILD
  5. LICENSE
  6. src/