Use MessageLoopProxy for network message loop.

remoting/client/client_context.cc

 // Copyright (c) 2010 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/client/client_context.h"
 
 namespace remoting {
 
 ClientContext::ClientContext()
     : main_thread_("ChromotingClientMainThread"),
@@ skipping 20 matching lines @@
 }
 
 MessageLoop* ClientContext::main_message_loop() {
   return main_thread_.message_loop();
 }
 
 MessageLoop* ClientContext::decode_message_loop() {
   return decode_thread_.message_loop();
 }
 
-MessageLoop* ClientContext::network_message_loop() {
-  return network_thread_.message_loop();
+base::MessageLoopProxy* ClientContext::network_message_loop() {
+  return network_thread_.message_loop_proxy();
 }
 
 }  // namespace remoting