Don't depend on MessageLoopProxy in remoting protocol code.

remoting/client/plugin/chromoting_instance.cc

Index: remoting/client/plugin/chromoting_instance.cc
diff --git a/remoting/client/plugin/chromoting_instance.cc b/remoting/client/plugin/chromoting_instance.cc
index c4d143fb3e05ac9d81ac059f49642f2897a4dfe1..6dc05c76db606a17f5adf98d07f3143d7d488c35 100644
--- a/remoting/client/plugin/chromoting_instance.cc
+++ b/remoting/client/plugin/chromoting_instance.cc
@@ -401,8 +401,7 @@ void ChromotingInstance::Connect(const ClientConfig& config) {
 
   jingle_glue::JingleThreadWrapper::EnsureForCurrentThread();
 
-  host_connection_.reset(new protocol::ConnectionToHost(
-      context_.network_message_loop(), true));
+  host_connection_.reset(new protocol::ConnectionToHost(true));
   client_.reset(new ChromotingClient(config, &context_, host_connection_.get(),
                                      view_.get(), rectangle_decoder_.get(),
                                      base::Closure()));