Remove OwnPtr from Blink.

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

Index: third_party/WebKit/Source/core/events/EventFactory.h
diff --git a/third_party/WebKit/Source/core/events/EventFactory.h b/third_party/WebKit/Source/core/events/EventFactory.h
index 01f7c688c2d7710565b25343346686eb0f8ef2e1..78b6de61e7b8c15e68133464a170babc78d242eb 100644
--- a/third_party/WebKit/Source/core/events/EventFactory.h
+++ b/third_party/WebKit/Source/core/events/EventFactory.h
@@ -29,7 +29,9 @@
 #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 {
 
@@ -48,9 +50,9 @@ protected:
 
 class EventFactory final : public EventFactoryBase {
 public:
-    static PassOwnPtr<EventFactory> create()
+    static std::unique_ptr<EventFactory> create()
     {
-        return adoptPtr(new EventFactory());
+        return wrapUnique(new EventFactory());
     }
 
     Event* create(ExecutionContext*, const String& eventType) override;