Remove OwnPtr from Blink.

third_party/WebKit/Source/platform/audio/FFTFrame.cpp

Index: third_party/WebKit/Source/platform/audio/FFTFrame.cpp
diff --git a/third_party/WebKit/Source/platform/audio/FFTFrame.cpp b/third_party/WebKit/Source/platform/audio/FFTFrame.cpp
index 9d70364c984c8a5d4584dace6977a16c2e85f34e..9e167e8033b46b5380b3fcfd31f880eff3bdfbe3 100644
--- a/third_party/WebKit/Source/platform/audio/FFTFrame.cpp
+++ b/third_party/WebKit/Source/platform/audio/FFTFrame.cpp
@@ -30,8 +30,9 @@
 #include "platform/audio/VectorMath.h"
 #include "platform/Logging.h"
 #include "wtf/MathExtras.h"
-#include "wtf/OwnPtr.h"
+#include "wtf/PtrUtil.h"
 #include <complex>
+#include <memory>
 
 #ifndef NDEBUG
 #include <stdio.h>
@@ -49,9 +50,9 @@ void FFTFrame::doPaddedFFT(const float* data, size_t dataSize)
     doFFT(paddedResponse.data());
 }
 
-PassOwnPtr<FFTFrame> FFTFrame::createInterpolatedFrame(const FFTFrame& frame1, const FFTFrame& frame2, double x)
+std::unique_ptr<FFTFrame> FFTFrame::createInterpolatedFrame(const FFTFrame& frame1, const FFTFrame& frame2, double x)
 {
-    OwnPtr<FFTFrame> newFrame = adoptPtr(new FFTFrame(frame1.fftSize()));
+    std::unique_ptr<FFTFrame> newFrame = wrapUnique(new FFTFrame(frame1.fftSize()));
 
     newFrame->interpolateFrequencyComponents(frame1, frame2, x);