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

Source/core/xml/XPathGrammar.y

 /*
  * Copyright 2005 Frerich Raabe <raabe@kde.org>
  * Copyright (C) 2006 Apple Inc. All rights reserved.
  * 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 44 matching lines @@
 %parse-param { WebCore::XPath::Parser* parser }
 
 %union
 {
     Step::Axis axis;
     Step::NodeTest* nodeTest;
     NumericOp::Opcode numop;
     EqTestOp::Opcode eqop;
     String* str;
     Expression* expr;
-    Vector<Predicate*>* predList;
+    Vector<OwnPtr<Predicate> >* predList;
     Vector<OwnPtr<Expression> >* argList;
     Step* step;
     LocationPath* locationPath;
 }
 
 %{
 
 static int xpathyylex(YYSTYPE* yylval) { return Parser::current()->lex(yylval); }
 static void xpathyyerror(void*, const char*) { }
     
@@ skipping 208 matching lines @@
     {
         $$ = 0;
     }
     |
     PredicateList
     ;
 
 PredicateList:
     Predicate
     {
-        $$ = new Vector<Predicate*>;
-        $$->append(new Predicate(adoptPtr($1)));
+        $$ = new Vector<OwnPtr<Predicate> >;
+        $$->append(adoptPtr(new Predicate(adoptPtr($1))));
         parser->unregisterParseNode($1);
         parser->registerPredicateVector($$);
     }
     |
     PredicateList Predicate
     {
-        $$->append(new Predicate(adoptPtr($2)));
+        $$->append(adoptPtr(new Predicate(adoptPtr($2))));
         parser->unregisterParseNode($2);
     }
     ;
 
 Predicate:
     '[' Expr ']'
     {
         $$ = $2;
     }
     ;
@@ skipping 232 matching lines @@
     MINUS UnaryExpr
     {
         $$ = new Negative;
         $$->addSubExpression(adoptPtr($2));
         parser->unregisterParseNode($2);
         parser->registerParseNode($$);
     }
     ;
 
 %%