Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/modules/accessibility/AXObjectCacheImpl.cpp

 /*
  * Copyright (C) 2014, Google 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 59 matching lines @@
 #include "modules/accessibility/AXRadioInput.h"
 #include "modules/accessibility/AXSVGRoot.h"
 #include "modules/accessibility/AXSlider.h"
 #include "modules/accessibility/AXSpinButton.h"
 #include "modules/accessibility/AXTable.h"
 #include "modules/accessibility/AXTableCell.h"
 #include "modules/accessibility/AXTableColumn.h"
 #include "modules/accessibility/AXTableHeaderContainer.h"
 #include "modules/accessibility/AXTableRow.h"
 #include "wtf/PassRefPtr.h"
-#include "wtf/PtrUtil.h"
 
 namespace blink {
 
 using namespace HTMLNames;
 
 // static
 AXObjectCache* AXObjectCacheImpl::create(Document& document)
 {
     return new AXObjectCacheImpl(document);
 }
@@ skipping 639 matching lines @@
     HashSet<String> currentIds = m_ariaOwnerToIdsMapping.get(owner->axObjectID());
     HashSet<String> newIds;
     bool idsChanged = false;
     for (const String& id : idVector) {
         newIds.add(id);
         if (!currentIds.contains(id)) {
             idsChanged = true;
             HashSet<AXID>* owners = m_idToAriaOwnersMapping.get(id);
             if (!owners) {
                 owners = new HashSet<AXID>();
-                m_idToAriaOwnersMapping.set(id, wrapUnique(owners));
+                m_idToAriaOwnersMapping.set(id, adoptPtr(owners));
             }
             owners->add(owner->axObjectID());
         }
     }
     for (const String& id : currentIds) {
         if (!newIds.contains(id)) {
             idsChanged = true;
             HashSet<AXID>* owners = m_idToAriaOwnersMapping.get(id);
             if (owners) {
                 owners->remove(owner->axObjectID());
@@ skipping 527 matching lines @@
     visitor->trace(m_document);
     visitor->trace(m_nodeObjectMapping);
 
     visitor->trace(m_objects);
     visitor->trace(m_notificationsToPost);
 
     AXObjectCache::trace(visitor);
 }
 
 } // namespace blink