Oilpan: Prepare moving AXObject to heap

Source/modules/accessibility/AXTableColumn.cpp

 /*
  * Copyright (C) 2008 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 29 matching lines @@
 
 AXTableColumn::AXTableColumn(AXObjectCacheImpl& axObjectCache)
     : AXMockObject(axObjectCache)
 {
 }
 
 AXTableColumn::~AXTableColumn()
 {
 }
 
-PassRefPtr<AXTableColumn> AXTableColumn::create(AXObjectCacheImpl& axObjectCache)
+PassRefPtrWillBeRawPtr<AXTableColumn> AXTableColumn::create(AXObjectCacheImpl& axObjectCache)
 {
-    return adoptRef(new AXTableColumn(axObjectCache));
+    return adoptRefWillBeNoop(new AXTableColumn(axObjectCache));
 }
 
 
 void AXTableColumn::setParent(AXObject* parent)
 {
     AXMockObject::setParent(parent);
 
     clearChildren();
 }
 
@@ skipping 91 matching lines @@
         // make sure the last one isn't the same as this one (rowspan cells)
         if (m_children.size() > 0 && m_children.last() == cell)
             continue;
 
         m_children.append(cell);
         m_columnRect.unite(cell->elementRect());
     }
 }
 
 } // namespace blink