Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/platform/audio/HRTFKernel.h

 /*
  * Copyright (C) 2010 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
@@ skipping 14 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef HRTFKernel_h
 #define HRTFKernel_h
 
 #include "platform/audio/FFTFrame.h"
 #include "wtf/Allocator.h"
 #include "wtf/Noncopyable.h"
-#include "wtf/PtrUtil.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
 #include "wtf/Vector.h"
-#include <memory>
 
 namespace blink {
 
 class AudioChannel;
 
 // HRTF stands for Head-Related Transfer Function.
 // HRTFKernel is a frequency-domain representation of an impulse-response used as part of the spatialized panning system.
 // For a given azimuth / elevation angle there will be one HRTFKernel for the left ear transfer function, and one for the right ear.
 // The leading delay (average group delay) for each impulse response is extracted:
 //      m_fftFrame is the frequency-domain representation of the impulse response with the delay removed
 //      m_frameDelay is the leading delay of the original impulse response.
 class PLATFORM_EXPORT HRTFKernel {
     USING_FAST_MALLOC(HRTFKernel);
     WTF_MAKE_NONCOPYABLE(HRTFKernel);
 public:
     // Note: this is destructive on the passed in AudioChannel.
     // The length of channel must be a power of two.
-    static std::unique_ptr<HRTFKernel> create(AudioChannel* channel, size_t fftSize, float sampleRate)
+    static PassOwnPtr<HRTFKernel> create(AudioChannel* channel, size_t fftSize, float sampleRate)
     {
-        return wrapUnique(new HRTFKernel(channel, fftSize, sampleRate));
+        return adoptPtr(new HRTFKernel(channel, fftSize, sampleRate));
     }
 
-    static std::unique_ptr<HRTFKernel> create(std::unique_ptr<FFTFrame> fftFrame, float frameDelay, float sampleRate)
+    static PassOwnPtr<HRTFKernel> create(PassOwnPtr<FFTFrame> fftFrame, float frameDelay, float sampleRate)
     {
-        return wrapUnique(new HRTFKernel(std::move(fftFrame), frameDelay, sampleRate));
+        return adoptPtr(new HRTFKernel(std::move(fftFrame), frameDelay, sampleRate));
     }
 
     // Given two HRTFKernels, and an interpolation factor x: 0 -> 1, returns an interpolated HRTFKernel.
-    static std::unique_ptr<HRTFKernel> createInterpolatedKernel(HRTFKernel* kernel1, HRTFKernel* kernel2, float x);
+    static PassOwnPtr<HRTFKernel> createInterpolatedKernel(HRTFKernel* kernel1, HRTFKernel* kernel2, float x);
 
     FFTFrame* fftFrame() { return m_fftFrame.get(); }
 
     size_t fftSize() const { return m_fftFrame->fftSize(); }
     float frameDelay() const { return m_frameDelay; }
 
     float sampleRate() const { return m_sampleRate; }
     double nyquist() const { return 0.5 * sampleRate(); }
 
     // Converts back into impulse-response form.
-    std::unique_ptr<AudioChannel> createImpulseResponse();
+    PassOwnPtr<AudioChannel> createImpulseResponse();
 
 private:
     // Note: this is destructive on the passed in AudioChannel.
     HRTFKernel(AudioChannel*, size_t fftSize, float sampleRate);
 
-    HRTFKernel(std::unique_ptr<FFTFrame> fftFrame, float frameDelay, float sampleRate)
+    HRTFKernel(PassOwnPtr<FFTFrame> fftFrame, float frameDelay, float sampleRate)
         : m_fftFrame(std::move(fftFrame))
         , m_frameDelay(frameDelay)
         , m_sampleRate(sampleRate)
     {
     }
 
-    std::unique_ptr<FFTFrame> m_fftFrame;
+    OwnPtr<FFTFrame> m_fftFrame;
     float m_frameDelay;
     float m_sampleRate;
 };
 
-typedef Vector<std::unique_ptr<HRTFKernel>> HRTFKernelList;
+typedef Vector<OwnPtr<HRTFKernel>> HRTFKernelList;
 
 } // namespace blink
 
 #endif // HRTFKernel_h