Block event processing on host/client until the client has authenticated.

remoting/client/chromoting_client.cc

Index: remoting/client/chromoting_client.cc
diff --git a/remoting/client/chromoting_client.cc b/remoting/client/chromoting_client.cc
index 0449d8f2edebe6f0112d54b2e4263170b8eed74b..d3384ae936ce0d41ede184b36ffb57570df9ebf7 100644
--- a/remoting/client/chromoting_client.cc
+++ b/remoting/client/chromoting_client.cc
@@ -233,6 +233,10 @@ void ChromotingClient::BeginSessionResponse(
     return;
   }
 
+  // Inform the connection that the client has been authenticated. This will
+  // enable the communication channels.
+  connection_->SetClientAuthenticated(msg->success());
+
   view_->UpdateLoginStatus(msg->success(), msg->error_info());
   done->Run();
   delete done;