Adding a new authenticator which can be used to validate the remote user

remoting/protocol/jingle_session.cc

Index: remoting/protocol/jingle_session.cc
diff --git a/remoting/protocol/jingle_session.cc b/remoting/protocol/jingle_session.cc
index ddef7589afd95eff4782fe1e509cf20c84a94ef6..90f7e9e7f42f78bdecbbaebf99dc459959141548 100644
--- a/remoting/protocol/jingle_session.cc
+++ b/remoting/protocol/jingle_session.cc
@@ -56,6 +56,8 @@ ErrorCode AuthRejectionReasonToErrorCode(
       return INCOMPATIBLE_PROTOCOL;
     case Authenticator::INVALID_ACCOUNT:
       return INVALID_ACCOUNT;
+    case Authenticator::REJECTED_BY_USER:
+      return SESSION_REJECTED;
   }
   NOTREACHED();
   return UNKNOWN_ERROR;