InlinedVisitor: Migrate xml to use inlined tracing

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 47 matching lines @@
         m_resultType = UNORDERED_NODE_ITERATOR_TYPE;
         m_nodeSetPosition = 0;
         m_nodeSet = NodeSet::create(m_value.toNodeSet(&context));
         m_document = &context.node->document();
         m_domTreeVersion = m_document->domTreeVersion();
         return;
     }
     ASSERT_NOT_REACHED();
 }
 
-void XPathResult::trace(Visitor* visitor)
+DEFINE_TRACE(XPathResult)
 {
     visitor->trace(m_value);
     visitor->trace(m_nodeSet);
     visitor->trace(m_document);
 }
 
 void XPathResult::convertTo(unsigned short type, ExceptionState& exceptionState)
 {
     switch (type) {
     case ANY_TYPE:
@@ skipping 134 matching lines @@
     }
 
     const NodeSet& nodes = m_value.toNodeSet(0);
     if (index >= nodes.size())
         return 0;
 
     return nodes[index];
 }
 
 }