Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/modules/webaudio/IIRProcessor.cpp

Index: third_party/WebKit/Source/modules/webaudio/IIRProcessor.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/IIRProcessor.cpp b/third_party/WebKit/Source/modules/webaudio/IIRProcessor.cpp
index e6ce38fa817d88144cc187147fca08ec70ac9451..660dd4437a55c25c3b3143ad22ad626707938f02 100644
--- a/third_party/WebKit/Source/modules/webaudio/IIRProcessor.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/IIRProcessor.cpp
@@ -5,8 +5,6 @@
 #include "modules/webaudio/IIRProcessor.h"
 
 #include "modules/webaudio/IIRDSPKernel.h"
-#include "wtf/PtrUtil.h"
-#include <memory>
 
 namespace blink {
 
@@ -48,7 +46,7 @@ IIRProcessor::IIRProcessor(float sampleRate, size_t numberOfChannels, const Vect
         m_feedback[0] = 1;
     }
 
-    m_responseKernel = wrapUnique(new IIRDSPKernel(this));
+    m_responseKernel = adoptPtr(new IIRDSPKernel(this));
 }
 
 IIRProcessor::~IIRProcessor()
@@ -57,9 +55,9 @@ IIRProcessor::~IIRProcessor()
         uninitialize();
 }
 
-std::unique_ptr<AudioDSPKernel> IIRProcessor::createKernel()
+PassOwnPtr<AudioDSPKernel> IIRProcessor::createKernel()
 {
-    return wrapUnique(new IIRDSPKernel(this));
+    return adoptPtr(new IIRDSPKernel(this));
 }
 
 void IIRProcessor::process(const AudioBus* source, AudioBus* destination, size_t framesToProcess)