InlinedVisitor: Migrate xml to use inlined tracing

Source/core/xml/XPathExpressionNode.h

Index: Source/core/xml/XPathExpressionNode.h
diff --git a/Source/core/xml/XPathExpressionNode.h b/Source/core/xml/XPathExpressionNode.h
index d41c8f099691622d792126d388910fec7b6a7e84..80215e9dcead5145f02f87e40b3aa841c229030a 100644
--- a/Source/core/xml/XPathExpressionNode.h
+++ b/Source/core/xml/XPathExpressionNode.h
@@ -53,7 +53,7 @@ public:
 class ParseNode : public NoBaseWillBeGarbageCollectedFinalized<ParseNode> {
 public:
     virtual ~ParseNode() { }
-    virtual void trace(Visitor*) { }
+    DEFINE_INLINE_VIRTUAL_TRACE() { }
 };
 
 class Expression : public ParseNode {
@@ -61,7 +61,7 @@ class Expression : public ParseNode {
 public:
     Expression();
     virtual ~Expression();
-    virtual void trace(Visitor*) override;
+    DECLARE_VIRTUAL_TRACE();
 
     virtual Value evaluate(EvaluationContext&) const = 0;