Oilpan: Remove GC_INFO_{DEFINE,DECLARE} macros

Source/core/xml/XPathResult.cpp

 /*
  * Copyright (C) 2005 Frerich Raabe <raabe@kde.org>
  * Copyright (C) 2006, 2009 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.
@@ skipping 18 matching lines @@
 
 #include "bindings/v8/ExceptionState.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/xml/XPathEvaluator.h"
 
 namespace WebCore {
 
 using namespace XPath;
 
-DEFINE_GC_INFO(XPathResult);
-
 XPathResult::XPathResult(Document* document, const Value& value)
     : m_value(value)
     , m_nodeSetPosition(0)
     , m_domTreeVersion(0)
 {
     ScriptWrappable::init(this);
     switch (m_value.type()) {
         case Value::BooleanValue:
             m_resultType = BOOLEAN_TYPE;
             return;
@@ skipping 159 matching lines @@
     }
 
     const NodeSet& nodes = m_value.toNodeSet();
     if (index >= nodes.size())
         return 0;
 
     return nodes[index];
 }
 
 }