InlinedVisitor: Migrate xml to use inlined tracing

Source/core/xml/XPathValue.cpp

 /*
  * Copyright 2005 Frerich Raabe <raabe@kde.org>
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * 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 20 matching lines @@
 #include "core/xml/XPathUtil.h"
 #include "wtf/MathExtras.h"
 #include "wtf/StdLibExtras.h"
 #include <limits>
 
 namespace blink {
 namespace XPath {
 
 const Value::AdoptTag Value::adopt = { };
 
-void ValueData::trace(Visitor* visitor)
+DEFINE_TRACE(ValueData)
 {
     visitor->trace(m_nodeSet);
 }
 
-void Value::trace(Visitor* visitor)
+DEFINE_TRACE(Value)
 {
     visitor->trace(m_data);
 }
 
 const NodeSet& Value::toNodeSet(EvaluationContext* context) const
 {
     if (!isNodeSet() && context)
         context->hadTypeConversionError = true;
 
     if (!m_data) {
@@ skipping 83 matching lines @@
         return String::number(m_number);
     case BooleanValue:
         return m_bool ? "true" : "false";
     }
     ASSERT_NOT_REACHED();
     return String();
 }
 
 }
 }