Remove tons of OILPAN.

sky/engine/core/html/ClassList.cpp

 /*
  * Copyright (C) 2010 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
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 48 matching lines @@
 {
     return m_element->hasClass() && classNames().contains(token);
 }
 
 const SpaceSplitString& ClassList::classNames() const
 {
     ASSERT(m_element->hasClass());
     return m_element->classNames();
 }
 
-void ClassList::trace(Visitor* visitor)
-{
-    visitor->trace(m_element);
-    DOMTokenList::trace(visitor);
-}
-
 } // namespace blink