Switching some interfaces to use std::unique_ptr<>.

webrtc/pc/peerconnectionfactory.h

 /*
  *  Copyright 2011 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 43 matching lines @@
   rtc::scoped_refptr<MediaStreamInterface>
       CreateLocalMediaStream(const std::string& label) override;
 
   virtual rtc::scoped_refptr<AudioSourceInterface> CreateAudioSource(
       const cricket::AudioOptions& options) override;
   // Deprecated, use version without constraints.
   rtc::scoped_refptr<AudioSourceInterface> CreateAudioSource(
       const MediaConstraintsInterface* constraints) override;
 
   virtual rtc::scoped_refptr<VideoTrackSourceInterface> CreateVideoSource(
-      cricket::VideoCapturer* capturer) override;
+      std::unique_ptr<cricket::VideoCapturer> capturer) override;
   // This version supports filtering on width, height and frame rate.
   // For the "constraints=null" case, use the version without constraints.
   // TODO(hta): Design a version without MediaConstraintsInterface.
   // https://bugs.chromium.org/p/webrtc/issues/detail?id=5617
   rtc::scoped_refptr<VideoTrackSourceInterface> CreateVideoSource(
-      cricket::VideoCapturer* capturer,
+      std::unique_ptr<cricket::VideoCapturer> capturer,
       const MediaConstraintsInterface* constraints) override;
 
   rtc::scoped_refptr<VideoTrackInterface> CreateVideoTrack(
       const std::string& id,
       VideoTrackSourceInterface* video_source) override;
 
   rtc::scoped_refptr<AudioTrackInterface>
       CreateAudioTrack(const std::string& id,
                        AudioSourceInterface* audio_source) override;
 
@@ skipping 30 matching lines @@
       rtc::Thread* signaling_thread,
       AudioDeviceModule* default_adm,
       rtc::scoped_refptr<webrtc::AudioEncoderFactory> audio_encoder_factory,
       rtc::scoped_refptr<webrtc::AudioDecoderFactory> audio_decoder_factory,
       cricket::WebRtcVideoEncoderFactory* video_encoder_factory,
       cricket::WebRtcVideoDecoderFactory* video_decoder_factory,
       rtc::scoped_refptr<AudioMixer> audio_mixer);
   virtual ~PeerConnectionFactory();
 
  private:
-  cricket::MediaEngineInterface* CreateMediaEngine_w();
+  std::unique_ptr<cricket::MediaEngineInterface> CreateMediaEngine_w();
 
   bool owns_ptrs_;
   bool wraps_current_thread_;
   rtc::Thread* network_thread_;
   rtc::Thread* worker_thread_;
   rtc::Thread* signaling_thread_;
   Options options_;
   // External Audio device used for audio playback.
   rtc::scoped_refptr<AudioDeviceModule> default_adm_;
   rtc::scoped_refptr<AudioDecoderFactory> audio_decoder_factory_;
   std::unique_ptr<cricket::ChannelManager> channel_manager_;
   // External Video encoder factory. This can be NULL if the client has not
   // injected any. In that case, video engine will use the internal SW encoder.
   std::unique_ptr<cricket::WebRtcVideoEncoderFactory> video_encoder_factory_;
   // External Video decoder factory. This can be NULL if the client has not
   // injected any. In that case, video engine will use the internal SW decoder.
   std::unique_ptr<cricket::WebRtcVideoDecoderFactory> video_decoder_factory_;
   std::unique_ptr<rtc::BasicNetworkManager> default_network_manager_;
   std::unique_ptr<rtc::BasicPacketSocketFactory> default_socket_factory_;
   // External audio mixer. This can be NULL. In that case, internal audio mixer
   // will be created and used.
   rtc::scoped_refptr<AudioMixer> external_audio_mixer_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_PC_PEERCONNECTIONFACTORY_H_