Vector stores Expression object as OwnPtr instead of raw pointer in XPath.

Source/core/xml/XPathParser.cpp

 /*
  * Copyright 2005 Maksim Orlovich <maksim@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 468 matching lines @@
         deleteAllValues(m_parseNodes);
         m_parseNodes.clear();
 
         HashSet<Vector<Predicate*>*>::iterator pend = m_predicateVectors.end();
         for (HashSet<Vector<Predicate*>*>::iterator it = m_predicateVectors.begin(); it != pend; ++it) {
             deleteAllValues(**it);
             delete *it;
         }
         m_predicateVectors.clear();
 
-        HashSet<Vector<Expression*>*>::iterator eend = m_expressionVectors.end();
-        for (HashSet<Vector<Expression*>*>::iterator it = m_expressionVectors.begin(); it != eend; ++it) {
-            deleteAllValues(**it);
+        HashSet<Vector<OwnPtr<Expression> >*>::iterator eend = m_expressionVectors.end();
+        for (HashSet<Vector<OwnPtr<Expression> >*>::iterator it = m_expressionVectors.begin(); it != eend; ++it)
             delete *it;
-        }
         m_expressionVectors.clear();
 
         deleteAllValues(m_strings);
         m_strings.clear();
 
         deleteAllValues(m_nodeTests);
         m_nodeTests.clear();
 
         m_topExpr = 0;
 
@@ skipping 53 matching lines @@
     if (vector == 0)
         return;
 
     ASSERT(m_predicateVectors.contains(vector));
 
     m_predicateVectors.remove(vector);
     delete vector;
 }
 
 
-void Parser::registerExpressionVector(Vector<Expression*>* vector)
+void Parser::registerExpressionVector(Vector<OwnPtr<Expression> >* vector)
 {
     if (vector == 0)
         return;
 
     ASSERT(!m_expressionVectors.contains(vector));
 
     m_expressionVectors.add(vector);
 }
 
-void Parser::deleteExpressionVector(Vector<Expression*>* vector)
+void Parser::deleteExpressionVector(Vector<OwnPtr<Expression> >* vector)
 {
     if (vector == 0)
         return;
 
     ASSERT(m_expressionVectors.contains(vector));
 
     m_expressionVectors.remove(vector);
     delete vector;
 }
 
@@ skipping 32 matching lines @@
 {
     if (t == 0)
         return;
 
     ASSERT(m_nodeTests.contains(t));
 
     m_nodeTests.remove(t);
     delete t;
 }