InlinedVisitor: Migrate xml to use inlined tracing

Source/core/xml/XPathExpression.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 40 matching lines @@
     RefPtrWillBeRawPtr<XPathExpression> expr = XPathExpression::create();
     Parser parser;
 
     expr->m_topExpression = parser.parseStatement(expression, resolver, exceptionState);
     if (!expr->m_topExpression)
         return nullptr;
 
     return expr.release();
 }
 
-void XPathExpression::trace(Visitor* visitor)
+DEFINE_TRACE(XPathExpression)
 {
     visitor->trace(m_topExpression);
 }
 
 PassRefPtrWillBeRawPtr<XPathResult> XPathExpression::evaluate(Node* contextNode, unsigned short type, XPathResult*, ExceptionState& exceptionState)
 {
     if (!contextNode) {
         exceptionState.throwDOMException(NotSupportedError, "The context node provided is null.");
         return nullptr;
     }
@@ skipping 15 matching lines @@
     if (type != XPathResult::ANY_TYPE) {
         result->convertTo(type, exceptionState);
         if (exceptionState.hadException())
             return nullptr;
     }
 
     return result;
 }
 
 }