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

remoting/host/chromoting_host.cc

Index: remoting/host/chromoting_host.cc
diff --git a/remoting/host/chromoting_host.cc b/remoting/host/chromoting_host.cc
index 9522b5c1e83d54d3135798ea52b9a50fa022bc79..a2d29daf53e88de87517aaf12f189d7cf735d42b 100644
--- a/remoting/host/chromoting_host.cc
+++ b/remoting/host/chromoting_host.cc
@@ -382,6 +382,7 @@ void ChromotingHost::LocalLoginSucceeded() {
   connection_->client_stub()->BeginSessionResponse(
       status, new DeleteTask<protocol::LocalLoginStatus>(status));
 
+  connection_->SetClientAuthenticated(true);
   recorder_->Start();
 }
 
@@ -397,6 +398,8 @@ void ChromotingHost::LocalLoginFailed() {
   status->set_success(false);
   connection_->client_stub()->BeginSessionResponse(
       status, new DeleteTask<protocol::LocalLoginStatus>(status));
+
+  connection_->SetClientAuthenticated(false);
 }
 
 }  // namespace remoting