Revert "Remove OwnPtr from Blink."

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

 /*
  * Copyright (C) 2008, 2009, 2010 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
@@ skipping 10 matching lines @@
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY 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.
  */
 
 #include "core/dom/AXObjectCache.h"
 
-#include "wtf/PtrUtil.h"
-#include <memory>
-
 namespace blink {
 
 AXObjectCache::AXObjectCacheCreateFunction AXObjectCache::m_createFunction = nullptr;
 
 void AXObjectCache::init(AXObjectCacheCreateFunction function)
 {
     DCHECK(!m_createFunction);
     m_createFunction = function;
 }
 
 AXObjectCache* AXObjectCache::create(Document& document)
 {
     DCHECK(m_createFunction);
     return m_createFunction(document);
 }
 
 AXObjectCache::AXObjectCache()
 {
 }
 
 AXObjectCache::~AXObjectCache()
 {
 }
 
-std::unique_ptr<ScopedAXObjectCache> ScopedAXObjectCache::create(Document& document)
+PassOwnPtr<ScopedAXObjectCache> ScopedAXObjectCache::create(Document& document)
 {
-    return wrapUnique(new ScopedAXObjectCache(document));
+    return adoptPtr(new ScopedAXObjectCache(document));
 }
 
 ScopedAXObjectCache::ScopedAXObjectCache(Document& document)
     : m_document(&document)
 {
     if (!m_document->axObjectCache())
         m_cache = AXObjectCache::create(*m_document);
 }
 
 ScopedAXObjectCache::~ScopedAXObjectCache()
 {
     if (m_cache)
         m_cache->dispose();
 }
 
 AXObjectCache* ScopedAXObjectCache::get()
 {
     if (m_cache)
         return m_cache.get();
     AXObjectCache* cache = m_document->axObjectCache();
     DCHECK(cache);
     return cache;
 }
 
 } // namespace blink