InlinedVisitor: Migrate xml to use inlined tracing

Source/core/xml/XPathPredicate.cpp

 /*
  * Copyright 2005 Frerich Raabe <raabe@kde.org>
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  *
  * 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
@@ skipping 24 matching lines @@
 
 namespace blink {
 
 namespace XPath {
 
 Number::Number(double value)
     : m_value(value)
 {
 }
 
-void Number::trace(Visitor* visitor)
+DEFINE_TRACE(Number)
 {
     visitor->trace(m_value);
     Expression::trace(visitor);
 }
 
 Value Number::evaluate(EvaluationContext&) const
 {
     return m_value;
 }
 
 StringExpression::StringExpression(const String& value)
     : m_value(value)
 {
 }
 
-void StringExpression::trace(Visitor* visitor)
+DEFINE_TRACE(StringExpression)
 {
     visitor->trace(m_value);
     Expression::trace(visitor);
 }
 
 Value StringExpression::evaluate(EvaluationContext&) const
 {
     return m_value;
 }
 
@@ skipping 202 matching lines @@
     return lhsResult;
 }
 
 Predicate::Predicate(PassOwnPtrWillBeRawPtr<Expression> expr)
     : m_expr(expr)
 {
 }
 
 DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(Predicate);
 
-void Predicate::trace(Visitor* visitor)
+DEFINE_TRACE(Predicate)
 {
     visitor->trace(m_expr);
 }
 
 bool Predicate::evaluate(EvaluationContext& context) const
 {
     ASSERT(m_expr);
 
     Value result(m_expr->evaluate(context));
 
     // foo[3] means foo[position()=3]
     if (result.isNumber())
         return EqTestOp(EqTestOp::OpcodeEqual, adoptPtrWillBeNoop(createFunction("position")), adoptPtrWillBeNoop(new Number(result.toNumber()))).evaluate(context).toBoolean();
 
     return result.toBoolean();
 }
 
 }
 }