Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/dom/SelectorQuery.h

 /*
  * Copyright (C) 2011, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2014 Samsung Electronics. 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.
@@ skipping 14 matching lines @@
  */
 
 #ifndef SelectorQuery_h
 #define SelectorQuery_h
 
 #include "core/css/CSSSelectorList.h"
 #include "platform/heap/Handle.h"
 #include "wtf/HashMap.h"
 #include "wtf/Vector.h"
 #include "wtf/text/AtomicStringHash.h"
-#include <memory>
 
 namespace blink {
 
 class CSSSelector;
 class ContainerNode;
 class Document;
 class Element;
 class ExceptionState;
 template <typename NodeType> class StaticNodeTypeList;
 typedef StaticNodeTypeList<Element> StaticElementList;
@@ skipping 37 matching lines @@
 
     Vector<const CSSSelector*> m_selectors;
     bool m_usesDeepCombinatorOrShadowPseudo : 1;
     bool m_needsUpdatedDistribution : 1;
 };
 
 class CORE_EXPORT SelectorQuery {
     WTF_MAKE_NONCOPYABLE(SelectorQuery);
     USING_FAST_MALLOC(SelectorQuery);
 public:
-    static std::unique_ptr<SelectorQuery> adopt(CSSSelectorList);
+    static PassOwnPtr<SelectorQuery> adopt(CSSSelectorList);
 
     bool matches(Element&) const;
     Element* closest(Element&) const;
     StaticElementList* queryAll(ContainerNode& rootNode) const;
     Element* queryFirst(ContainerNode& rootNode) const;
 private:
     explicit SelectorQuery(CSSSelectorList);
 
     SelectorDataList m_selectors;
     CSSSelectorList m_selectorList;
 };
 
 class SelectorQueryCache {
     USING_FAST_MALLOC(SelectorQueryCache);
 public:
     SelectorQuery* add(const AtomicString&, const Document&, ExceptionState&);
     void invalidate();
 
 private:
-    HashMap<AtomicString, std::unique_ptr<SelectorQuery>> m_entries;
+    HashMap<AtomicString, OwnPtr<SelectorQuery>> m_entries;
 };
 
 } // namespace blink
 
 #endif