Remove OwnPtr from Blink.

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

Index: third_party/WebKit/Source/platform/audio/AudioChannel.h
diff --git a/third_party/WebKit/Source/platform/audio/AudioChannel.h b/third_party/WebKit/Source/platform/audio/AudioChannel.h
index f1569111d225cadd6c779a46ee6ffe1fe7e0e850..472227b839f73c31908c3d9c70f17bf271dd0f5e 100644
--- a/third_party/WebKit/Source/platform/audio/AudioChannel.h
+++ b/third_party/WebKit/Source/platform/audio/AudioChannel.h
@@ -32,7 +32,8 @@
 #include "platform/PlatformExport.h"
 #include "platform/audio/AudioArray.h"
 #include "wtf/Allocator.h"
-#include "wtf/PassOwnPtr.h"
+#include "wtf/PtrUtil.h"
+#include <memory>
 
 namespace blink {
 
@@ -58,7 +59,7 @@ public:
         , m_rawPointer(nullptr)
         , m_silent(true)
     {
-        m_memBuffer = adoptPtr(new AudioFloatArray(length));
+        m_memBuffer = wrapUnique(new AudioFloatArray(length));
     }
 
     // A "blank" audio channel -- must call set() before it's useful...
@@ -133,7 +134,7 @@ private:
     size_t m_length;
 
     float* m_rawPointer;
-    OwnPtr<AudioFloatArray> m_memBuffer;
+    std::unique_ptr<AudioFloatArray> m_memBuffer;
     bool m_silent;
 };