Simplify VideoReader and VideoWriter

remoting/protocol/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/video_writer.h"
-
-#include "remoting/protocol/session_config.h"
-#include "remoting/protocol/protobuf_video_writer.h"
-
-namespace remoting {
-namespace protocol {
-
-VideoWriter::~VideoWriter() { }
-
-// static
-scoped_ptr<VideoWriter> VideoWriter::Create(const SessionConfig& config) {
-  const ChannelConfig& video_config = config.video_config();
-  if (video_config.transport == ChannelConfig::TRANSPORT_STREAM) {
-    return scoped_ptr<VideoWriter>(new ProtobufVideoWriter());
-  }
-  return scoped_ptr<VideoWriter>();
-}
-
-}  // namespace protocol
-}  // namespace remoting