Revert "Remove OwnPtr from Blink."

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

 /*
  * Copyright (C) 2011, 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 13 matching lines @@
 
 #ifndef WaveShaperProcessor_h
 #define WaveShaperProcessor_h
 
 #include "core/dom/DOMTypedArray.h"
 #include "modules/webaudio/AudioNode.h"
 #include "platform/audio/AudioDSPKernel.h"
 #include "platform/audio/AudioDSPKernelProcessor.h"
 #include "wtf/RefPtr.h"
 #include "wtf/ThreadingPrimitives.h"
-#include <memory>
 
 namespace blink {
 
 // WaveShaperProcessor is an AudioDSPKernelProcessor which uses WaveShaperDSPKernel objects to implement non-linear distortion effects.
 
 class WaveShaperProcessor final : public AudioDSPKernelProcessor {
 public:
     enum OverSampleType {
         OverSampleNone,
         OverSample2x,
         OverSample4x
     };
 
     WaveShaperProcessor(float sampleRate, size_t numberOfChannels);
 
     ~WaveShaperProcessor() override;
 
-    std::unique_ptr<AudioDSPKernel> createKernel() override;
+    PassOwnPtr<AudioDSPKernel> createKernel() override;
 
     void process(const AudioBus* source, AudioBus* destination, size_t framesToProcess) override;
 
     void setCurve(DOMFloat32Array*);
     DOMFloat32Array* curve() { return m_curve.get(); }
 
     void setOversample(OverSampleType);
     OverSampleType oversample() const { return m_oversample; }
 
 private:
     // m_curve represents the non-linear shaping curve.
     CrossThreadPersistent<DOMFloat32Array> m_curve;
 
     OverSampleType m_oversample;
 };
 
 } // namespace blink
 
 #endif // WaveShaperProcessor_h