Cleaned up the reader and writer create methods to return scoped_ptr.

remoting/protocol/video_writer.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.
 
 // VideoWriter is a generic interface used by ConnectionToClient to
 // write into the video stream. ProtobufVideoWriter implements this
 // interface for protobuf video streams.
 
 #ifndef REMOTING_PROTOCOL_VIDEO_WRITER_H_
 #define REMOTING_PROTOCOL_VIDEO_WRITER_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "remoting/protocol/video_stub.h"
 
 namespace remoting {
 namespace protocol {
 
 class Session;
 class SessionConfig;
 
 class VideoWriter : public VideoStub {
  public:
   virtual ~VideoWriter();
 
   // The callback is called when initialization is finished. The
   // parameter is set to true on success.
   typedef base::Callback<void(bool)> InitializedCallback;
 
-  static VideoWriter* Create(const SessionConfig& config);
+  static scoped_ptr<VideoWriter> Create(const SessionConfig& config);
 
   // Initializes the writer.
   virtual void Init(Session* session, const InitializedCallback& callback) = 0;
 
   // Stops writing. Must be called on the network thread before this
   // object is destroyed.
   virtual void Close() = 0;
 
   // Returns true if the channel is connected.
   virtual bool is_connected() = 0;
 
  protected:
   VideoWriter() { }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(VideoWriter);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_VIDEO_WRITER_H_