Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/platform/audio/AudioChannel.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 AudioChannel_h
 #define AudioChannel_h
 
 #include "platform/PlatformExport.h"
 #include "platform/audio/AudioArray.h"
 #include "wtf/Allocator.h"
-#include "wtf/PtrUtil.h"
-#include <memory>
+#include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
 // An AudioChannel represents a buffer of non-interleaved floating-point audio samples.
 // The PCM samples are normally assumed to be in a nominal range -1.0 -> +1.0
 class PLATFORM_EXPORT AudioChannel {
     USING_FAST_MALLOC(AudioChannel);
     WTF_MAKE_NONCOPYABLE(AudioChannel);
 public:
     // Memory can be externally referenced, or can be internally allocated with an AudioFloatArray.
 
     // Reference an external buffer.
     AudioChannel(float* storage, size_t length)
         : m_length(length)
         , m_rawPointer(storage)
         , m_silent(false)
     {
     }
 
     // Manage storage for us.
     explicit AudioChannel(size_t length)
         : m_length(length)
         , m_rawPointer(nullptr)
         , m_silent(true)
     {
-        m_memBuffer = wrapUnique(new AudioFloatArray(length));
+        m_memBuffer = adoptPtr(new AudioFloatArray(length));
     }
 
     // A "blank" audio channel -- must call set() before it's useful...
     AudioChannel()
         : m_length(0)
         , m_rawPointer(nullptr)
         , m_silent(true)
     {
     }
 
@@ skipping 54 matching lines @@
     // Sums (with unity gain) from the source channel.
     void sumFrom(const AudioChannel* sourceChannel);
 
     // Returns maximum absolute value (useful for normalization).
     float maxAbsValue() const;
 
 private:
     size_t m_length;
 
     float* m_rawPointer;
-    std::unique_ptr<AudioFloatArray> m_memBuffer;
+    OwnPtr<AudioFloatArray> m_memBuffer;
     bool m_silent;
 };
 
 } // namespace blink
 
 #endif // AudioChannel_h