Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/events/EventFactory.h

 /*
  * Copyright (C) 2011 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 11 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 EventFactory_h
 #define EventFactory_h
 
 #include "platform/heap/Handle.h"
 #include "wtf/Allocator.h"
 #include "wtf/PassRefPtr.h"
-#include "wtf/PtrUtil.h"
 #include "wtf/text/AtomicString.h"
-#include <memory>
 
 namespace blink {
 
 class Event;
 class ExecutionContext;
 
 class EventFactoryBase {
     USING_FAST_MALLOC(EventFactoryBase);
 public:
     virtual Event* create(ExecutionContext*, const String& eventType) = 0;
     virtual ~EventFactoryBase() { }
 
 protected:
     EventFactoryBase() { }
 };
 
 class EventFactory final : public EventFactoryBase {
 public:
-    static std::unique_ptr<EventFactory> create()
+    static PassOwnPtr<EventFactory> create()
     {
-        return wrapUnique(new EventFactory());
+        return adoptPtr(new EventFactory());
     }
 
     Event* create(ExecutionContext*, const String& eventType) override;
 };
 
 } // namespace blink
 
 #endif