Reduce visibility of SyncEventBroker to package-private

All the classes in this plugin are package-private because they are not
meant to be used outside of this plugin. Change SyncEventBroker
visibility to be consistent.

Change-Id: Icb526e78659076202a657c1d6394d46d36308a3c
1 file changed
tree: 56ab14a312a8547db469b191f9b9d4e81d4d17c2
  1. lib/
  2. src/
  3. .buckconfig
  4. .gitignore
  5. BUCK