Convert //remoting to use std::unique_ptr

remoting/codec/audio_encoder.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_CODEC_AUDIO_ENCODER_H_
 #define REMOTING_CODEC_AUDIO_ENCODER_H_
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
 
 namespace remoting {
 
 class AudioPacket;
 
 class AudioEncoder {
  public:
   virtual ~AudioEncoder() {}
 
-  virtual scoped_ptr<AudioPacket> Encode(scoped_ptr<AudioPacket> packet) = 0;
+  virtual std::unique_ptr<AudioPacket> Encode(
+      std::unique_ptr<AudioPacket> packet) = 0;
 
   // Returns average bitrate for the stream in bits per second.
   virtual int GetBitrate() = 0;
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CODEC_AUDIO_ENCODER_H_