Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/modules/EventModulesFactory.h

 // Copyright (c) 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef EventModulesFactory_h
 #define EventModulesFactory_h
 
 #include "core/events/EventFactory.h"
 #include "platform/heap/Handle.h"
 #include "wtf/PassRefPtr.h"
-#include "wtf/PtrUtil.h"
 #include "wtf/text/AtomicString.h"
-#include <memory>
 
 namespace blink {
 
 class Event;
 
 class EventModulesFactory final : public EventFactoryBase {
 public:
-    static std::unique_ptr<EventModulesFactory> create()
+    static PassOwnPtr<EventModulesFactory> create()
     {
-        return wrapUnique(new EventModulesFactory());
+        return adoptPtr(new EventModulesFactory());
     }
 
     Event* create(ExecutionContext*, const String& eventType) override;
 };
 
 } // namespace blink
 
 #endif