Remove OwnPtr from Blink.

third_party/WebKit/Source/modules/webaudio/MediaStreamAudioSourceNode.h

 /*
  * Copyright (C) 2012, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 11 matching lines @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef MediaStreamAudioSourceNode_h
 #define MediaStreamAudioSourceNode_h
 
 #include "modules/mediastream/MediaStream.h"
 #include "modules/webaudio/AudioSourceNode.h"
 #include "platform/audio/AudioSourceProvider.h"
 #include "platform/audio/AudioSourceProviderClient.h"
-#include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/Threading.h"
+#include <memory>
 
 namespace blink {
 
 class AbstractAudioContext;
 
 class MediaStreamAudioSourceHandler final : public AudioHandler {
 public:
-    static PassRefPtr<MediaStreamAudioSourceHandler> create(AudioNode&, MediaStream&, MediaStreamTrack*, PassOwnPtr<AudioSourceProvider>);
+    static PassRefPtr<MediaStreamAudioSourceHandler> create(AudioNode&, MediaStream&, MediaStreamTrack*, std::unique_ptr<AudioSourceProvider>);
     ~MediaStreamAudioSourceHandler() override;
 
     MediaStream* getMediaStream() { return m_mediaStream.get(); }
 
     // AudioHandler
     void process(size_t framesToProcess) override;
 
     // A helper for AudioSourceProviderClient implementation of
     // MediaStreamAudioSourceNode.
     void setFormat(size_t numberOfChannels, float sampleRate);
 
     AudioSourceProvider* getAudioSourceProvider() const { return m_audioSourceProvider.get(); }
 
 private:
-    MediaStreamAudioSourceHandler(AudioNode&, MediaStream&, MediaStreamTrack*, PassOwnPtr<AudioSourceProvider>);
+    MediaStreamAudioSourceHandler(AudioNode&, MediaStream&, MediaStreamTrack*, std::unique_ptr<AudioSourceProvider>);
     // As an audio source, we will never propagate silence.
     bool propagatesSilence() const override { return false; }
 
     // These Persistents don't make reference cycles including the owner
     // MediaStreamAudioSourceNode.
     Persistent<MediaStream> m_mediaStream;
     Persistent<MediaStreamTrack> m_audioTrack;
-    OwnPtr<AudioSourceProvider> m_audioSourceProvider;
+    std::unique_ptr<AudioSourceProvider> m_audioSourceProvider;
 
     Mutex m_processLock;
 
     unsigned m_sourceNumberOfChannels;
 };
 
 class MediaStreamAudioSourceNode final : public AudioSourceNode, public AudioSourceProviderClient {
     DEFINE_WRAPPERTYPEINFO();
     USING_GARBAGE_COLLECTED_MIXIN(MediaStreamAudioSourceNode);
 public:
     static MediaStreamAudioSourceNode* create(AbstractAudioContext&, MediaStream&, ExceptionState&);
     DECLARE_VIRTUAL_TRACE();
     MediaStreamAudioSourceHandler& mediaStreamAudioSourceHandler() const;
 
     MediaStream* getMediaStream() const;
 
     // AudioSourceProviderClient functions:
     void setFormat(size_t numberOfChannels, float sampleRate) override;
 
 private:
-    MediaStreamAudioSourceNode(AbstractAudioContext&, MediaStream&, MediaStreamTrack*, PassOwnPtr<AudioSourceProvider>);
+    MediaStreamAudioSourceNode(AbstractAudioContext&, MediaStream&, MediaStreamTrack*, std::unique_ptr<AudioSourceProvider>);
 };
 
 } // namespace blink
 
 #endif // MediaStreamAudioSourceNode_h