Refactor UserEventLogging, Add predictedRank, replace Bundle with Proto
am: ddec1c7

* commit 'ddec1c739ef37c3a042982b8943fe42e04b65f4c':
  Refactor UserEventLogging, Add predictedRank, replace Bundle with Proto

Change-Id: Ib793476ccb6670a20edc6dc7e16bf589b544c4a1