Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/platform/graphics/ImageSource.h

 /*
  * Copyright (C) 2004, 2005, 2006 Apple Computer, 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ImageSource_h
 #define ImageSource_h
 
 #include "platform/PlatformExport.h"
 #include "platform/graphics/ImageOrientation.h"
 #include "wtf/Forward.h"
 #include "wtf/Noncopyable.h"
-#include <memory>
+#include "wtf/OwnPtr.h"
 
 class SkImage;
 
 namespace blink {
 
 class DeferredImageDecoder;
 class ImageOrientation;
 class IntPoint;
 class IntSize;
 class SharedBuffer;
@@ skipping 44 matching lines @@
     float frameDurationAtIndex(size_t) const;
     bool frameHasAlphaAtIndex(size_t) const; // Whether or not the frame actually used any alpha.
     bool frameIsCompleteAtIndex(size_t) const; // Whether or not the frame is fully received.
     ImageOrientation orientationAtIndex(size_t) const; // EXIF image orientation
 
     // Returns the number of bytes in the decoded frame. May return 0 if the
     // frame has not yet begun to decode.
     size_t frameBytesAtIndex(size_t) const;
 
 private:
-    std::unique_ptr<DeferredImageDecoder> m_decoder;
+    OwnPtr<DeferredImageDecoder> m_decoder;
 };
 
 } // namespace blink
 
 #endif