Remove OwnPtr from Blink.

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

 /*
  * Copyright (C) 2003, 2006, 2007, 2008, 2009, 2010, 2011 Apple 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 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (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 AXObjectCache_h
 #define AXObjectCache_h
 
 #include "core/CoreExport.h"
 #include "core/dom/Document.h"
+#include <memory>
 
 typedef unsigned AXID;
 
 namespace blink {
 
 class AbstractInlineTextBox;
 class AXObject;
 class FrameView;
 class HTMLOptionElement;
 class HTMLSelectElement;
@@ skipping 106 matching lines @@
     AXObjectCache();
 
 private:
     static AXObjectCacheCreateFunction m_createFunction;
 };
 
 class CORE_EXPORT ScopedAXObjectCache {
     USING_FAST_MALLOC(ScopedAXObjectCache);
     WTF_MAKE_NONCOPYABLE(ScopedAXObjectCache);
 public:
-    static PassOwnPtr<ScopedAXObjectCache> create(Document&);
+    static std::unique_ptr<ScopedAXObjectCache> create(Document&);
     ~ScopedAXObjectCache();
 
     AXObjectCache* get();
 
 private:
     explicit ScopedAXObjectCache(Document&);
 
     Persistent<Document> m_document;
     Persistent<AXObjectCache> m_cache;
 };
 
 } // namespace blink
 
 #endif