Oilpan: Prepare moving AXObject to heap

Source/modules/accessibility/AXTableCell.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 28 matching lines @@
 
 AXTableCell::AXTableCell(LayoutObject* layoutObject, AXObjectCacheImpl& axObjectCache)
     : AXLayoutObject(layoutObject, axObjectCache)
 {
 }
 
 AXTableCell::~AXTableCell()
 {
 }
 
-PassRefPtr<AXTableCell> AXTableCell::create(LayoutObject* layoutObject, AXObjectCacheImpl& axObjectCache)
+PassRefPtrWillBeRawPtr<AXTableCell> AXTableCell::create(LayoutObject* layoutObject, AXObjectCacheImpl& axObjectCache)
 {
-    return adoptRef(new AXTableCell(layoutObject, axObjectCache));
+    return adoptRefWillBeNoop(new AXTableCell(layoutObject, axObjectCache));
 }
 
 bool AXTableCell::isTableHeaderCell() const
 {
     return node() && node()->hasTagName(thTag);
 }
 
 bool AXTableCell::isRowHeaderCell() const
 {
     const AtomicString& scope = getAttribute(scopeAttr);
@@ skipping 187 matching lines @@
         return 0;
 
     Node* cellElement = headerCell->node();
     if (!cellElement || !cellElement->hasTagName(thTag))
         return 0;
 
     return axObjectCache().getOrCreate(headerCell);
 }
 
 } // namespace blink