Replace scoped_ptr with unique_ptr in webrtc/modules/audio_coding/codecs/

webrtc/common_audio/vad/vad.cc

 /*
  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 38 matching lines @@
     RTC_CHECK_EQ(WebRtcVad_set_mode(handle_, aggressiveness_), 0);
   }
 
  private:
   VadInst* handle_;
   Aggressiveness aggressiveness_;
 };
 
 }  // namespace
 
-rtc::scoped_ptr<Vad> CreateVad(Vad::Aggressiveness aggressiveness) {
-  return rtc::scoped_ptr<Vad>(new VadImpl(aggressiveness));
+std::unique_ptr<Vad> CreateVad(Vad::Aggressiveness aggressiveness) {
+  return std::unique_ptr<Vad>(new VadImpl(aggressiveness));
 }
 
 }  // namespace webrtc