Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/wtf/ListHashSet.h

 /*
  * Copyright (C) 2005, 2006, 2007, 2008, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011, Benjamin Poulain <ikipou@gmail.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef WTF_ListHashSet_h
 #define WTF_ListHashSet_h
 
 #include "wtf/HashSet.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
 #include "wtf/allocator/PartitionAllocator.h"
-#include <memory>
 
 namespace WTF {
 
 // ListHashSet: Just like HashSet, this class provides a Set interface - a
 // collection of unique objects with O(1) insertion, removal and test for
 // containership. However, it also has an order - iterating it will always give
 // back values in the order in which they are added.
 
 // Unlike iteration of most WTF Hash data structures, iteration is guaranteed
 // safe against mutation of the ListHashSet, except for removal of the item
@@ skipping 222 matching lines @@
             m_allocator->deallocate(node);
         }
 
         ListHashSetAllocator* get() const
         {
             ASSERT(m_allocator);
             return m_allocator;
         }
 
     private:
-        // Not using std::unique_ptr as this pointer should be deleted at
+        // Not using OwnPtr as this pointer should be deleted at
         // releaseAllocator() method rather than at destructor.
         ListHashSetAllocator* m_allocator;
     };
 
     ListHashSetAllocator()
         : m_freeList(pool())
         , m_isDoneWithInitialFreeList(false)
     {
         memset(m_pool.buffer, 0, sizeof(m_pool.buffer));
     }
@@ skipping 749 matching lines @@
     // through the HashTable. That includes m_head and m_tail so we do not have
     // to explicitly trace them here.
     m_impl.trace(visitor);
 }
 
 } // namespace WTF
 
 using WTF::ListHashSet;
 
 #endif // WTF_ListHashSet_h