Do not zero-initialize RawPtr.

Source/core/xml/XPathParser.h

 /*
  * Copyright 2005 Maksim Orlovich <maksim@kde.org>
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * 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 46 matching lines @@
 
     Token(int t) : type(t) { }
     Token(int t, const String& v): type(t), str(v) { }
     Token(int t, Step::Axis v): type(t), axis(v) { }
     Token(int t, NumericOp::Opcode v): type(t), numop(v) { }
     Token(int t, EqTestOp::Opcode v): type(t), eqop(v) { }
 };
 
 class Parser {
     WTF_MAKE_NONCOPYABLE(Parser);
-    // FIXME: oilpan: This should be STACK_ALLOCATED.
-    DISALLOW_ALLOCATION();
+    STACK_ALLOCATED();
 public:
     Parser();
     ~Parser();
 
     XPathNSResolver* resolver() const { return m_resolver.get(); }
     bool expandQName(const String& qName, AtomicString& localName, AtomicString& namespaceURI);
 
     Expression* parseStatement(const String& statement, PassRefPtrWillBeRawPtr<XPathNSResolver>, ExceptionState&);
 
     static Parser* current() { return currentParser; }
@@ skipping 36 matching lines @@
     Token nextToken();
     Token nextTokenInternal();
 
     void reset(const String& data);
 
     static Parser* currentParser;
 
     unsigned m_nextPos;
     String m_data;
     int m_lastTokenType;
-    RefPtrWillBeRawPtr<XPathNSResolver> m_resolver;
+    RefPtrWillBeMember<XPathNSResolver> m_resolver;
 
     HashSet<ParseNode*> m_parseNodes;
     HashSet<Vector<OwnPtr<Predicate> >*> m_predicateVectors;
     HashSet<Vector<OwnPtr<Expression> >*> m_expressionVectors;
     HashSet<String*> m_strings;
     HashSet<Step::NodeTest*> m_nodeTests;
 };
 
 } // XPath
 
 } // WebCore
 
 #endif