[Draft] Fix canceling pin prompt causes host overload

remoting/protocol/connection_to_client.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/protocol/connection_to_client.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "net/base/io_buffer.h"
@@ skipping 94 matching lines @@
   DCHECK(CalledOnValidThread());
 
   DCHECK(handler_);
   switch(state) {
     case Session::INITIALIZING:
     case Session::CONNECTING:
     case Session::ACCEPTING:
     case Session::CONNECTED:
       // Don't care about these events.
       break;
-
+    case Session::AUTHENTICATING:
+      handler_->OnConnectionAuthenticating(this);
+      break;
     case Session::AUTHENTICATED:
       // Initialize channels.
       control_dispatcher_.reset(new HostControlDispatcher());
       control_dispatcher_->Init(
           session_.get(), session_->config().control_config(),
           base::Bind(&ConnectionToClient::OnChannelInitialized,
                      base::Unretained(this)));
       control_dispatcher_->set_clipboard_stub(clipboard_stub_);
       control_dispatcher_->set_host_stub(host_stub_);
 
@@ skipping 74 matching lines @@
 
 void ConnectionToClient::CloseChannels() {
   control_dispatcher_.reset();
   event_dispatcher_.reset();
   video_writer_.reset();
   audio_writer_.reset();
 }
 
 }  // namespace protocol
 }  // namespace remoting