Remove OwnPtr from Blink.

third_party/WebKit/Source/core/fileapi/FileReader.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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 22 matching lines @@
 
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/events/EventTarget.h"
 #include "core/fileapi/FileError.h"
 #include "core/fileapi/FileReaderLoader.h"
 #include "core/fileapi/FileReaderLoaderClient.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
+#include <memory>
 
 namespace blink {
 
 class Blob;
 class ExceptionState;
 class ExecutionContext;
 class StringOrArrayBuffer;
 
 class CORE_EXPORT FileReader final : public EventTargetWithInlineData, public ActiveScriptWrappable, public ActiveDOMObject, public FileReaderLoaderClient {
     DEFINE_WRAPPERTYPEINFO();
@@ skipping 68 matching lines @@
         LoadingStateLoading,
         LoadingStateAborted
     };
     LoadingState m_loadingState;
 
     String m_blobType;
     RefPtr<BlobDataHandle> m_blobDataHandle;
     FileReaderLoader::ReadType m_readType;
     String m_encoding;
 
-    OwnPtr<FileReaderLoader> m_loader;
+    std::unique_ptr<FileReaderLoader> m_loader;
     Member<FileError> m_error;
     double m_lastProgressNotificationTimeMS;
 };
 
 } // namespace blink
 
 #endif // FileReader_h