Add missing IWYU message_loop.h includes.

remoting/host/win/rdp_client.cc

 // Copyright (c) 2013 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/host/win/rdp_client.h"
 
 #include <windows.h>
 
 #include <cstdint>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/macros.h"
+#include "base/message_loop/message_loop.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/single_thread_task_runner.h"
 #include "net/base/ip_address.h"
 #include "net/base/ip_endpoint.h"
 #include "remoting/base/typed_buffer.h"
 #include "remoting/host/screen_resolution.h"
 #include "remoting/host/win/rdp_client_window.h"
 
 namespace remoting {
 
@@ skipping 213 matching lines @@
   }
 
   if (event_handler_) {
     RdpClient::EventHandler* event_handler = event_handler_;
     event_handler_ = nullptr;
     event_handler->OnRdpClosed();
   }
 }
 
 }  // namespace remoting