Don't depend on MessageLoopProxy in remoting protocol code.

remoting/protocol/protobuf_video_writer.cc

 // 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.
 
 #include "remoting/protocol/protobuf_video_writer.h"
 
 #include "base/bind.h"
 #include "net/socket/stream_socket.h"
 #include "remoting/base/constants.h"
 #include "remoting/proto/video.pb.h"
 #include "remoting/protocol/session.h"
 #include "remoting/protocol/util.h"
 
 namespace remoting {
 namespace protocol {
 
-ProtobufVideoWriter::ProtobufVideoWriter(base::MessageLoopProxy* message_loop)
+ProtobufVideoWriter::ProtobufVideoWriter()
     : session_(NULL) {
 }
 
 ProtobufVideoWriter::~ProtobufVideoWriter() {
   Close();
 }
 
 void ProtobufVideoWriter::Init(protocol::Session* session,
                                const InitializedCallback& callback) {
   session_ = session;
@@ skipping 36 matching lines @@
                                              const base::Closure& done) {
   buffered_writer_.Write(SerializeAndFrameMessage(*packet), done);
 }
 
 int ProtobufVideoWriter::GetPendingPackets() {
   return buffered_writer_.GetBufferChunks();
 }
 
 }  // namespace protocol
 }  // namespace remoting