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..f205d1e3cbefd84d2ec4830282e720541bdcf09d 100644
--- a/remoting/client/chromoting_client.cc
+++ b/remoting/client/chromoting_client.cc
@@ -233,6 +233,12 @@ void ChromotingClient::BeginSessionResponse(
     return;
   }
 
+  // Inform the connection that the client has been authenticated. This will
+  // enable the communication channels.
+  if (msg->success()) {
+    connection_->OnClientAuthenticated();
+  }
+
   view_->UpdateLoginStatus(msg->success(), msg->error_info());
   done->Run();
   delete done;