Don't depend on MessageLoopProxy in remoting protocol code.

remoting/protocol/message_reader.h

 // Copyright (c) 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.
 
 #ifndef REMOTING_PROTOCOL_MESSAGE_READER_H_
 #define REMOTING_PROTOCOL_MESSAGE_READER_H_
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
@@ skipping 36 matching lines @@
   void Init(net::Socket* socket, const MessageReceivedCallback& callback);
 
  private:
   friend class base::RefCountedThreadSafe<MessageReader>;
   virtual ~MessageReader();
 
   void DoRead();
   void OnRead(int result);
   void HandleReadResult(int result);
   void OnDataReceived(net::IOBuffer* data, int data_size);
-  void OnMessageDone(scoped_refptr<base::MessageLoopProxy> message_loop);
+  void OnMessageDone(scoped_refptr<base::SingleThreadTaskRunner> task_runner);
   void ProcessDoneEvent();
 
   net::Socket* socket_;
 
   // Set to true, when we have a socket read pending, and expecting
   // OnRead() to be called when new data is received.
   bool read_pending_;
 
   // Number of messages that we received, but haven't finished
   // processing yet, i.e. |done_task| hasn't been called for these
@@ skipping 44 matching lines @@
   }
 
   scoped_refptr<MessageReader> message_reader_;
   MessageReceivedCallback message_received_callback_;
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_MESSAGE_READER_H_