Oilpan: Move core/xml/ to oilpan's heap

Source/core/xml/XPathParser.h

Index: Source/core/xml/XPathParser.h
diff --git a/Source/core/xml/XPathParser.h b/Source/core/xml/XPathParser.h
index e3f4cf05925b7664a6dc6a84a229143ee2895e5e..aec09025140a404e0242d2d2011a8e57a27d0029 100644
--- a/Source/core/xml/XPathParser.h
+++ b/Source/core/xml/XPathParser.h
@@ -71,7 +71,7 @@ public:
     XPathNSResolver* resolver() const { return m_resolver.get(); }
     bool expandQName(const String& qName, AtomicString& localName, AtomicString& namespaceURI);
 
-    Expression* parseStatement(const String& statement, PassRefPtr<XPathNSResolver>, ExceptionState&);
+    Expression* parseStatement(const String& statement, PassRefPtrWillBeRawPtr<XPathNSResolver>, ExceptionState&);
 
     static Parser* current() { return currentParser; }
 
@@ -120,7 +120,7 @@ private:
     unsigned m_nextPos;
     String m_data;
     int m_lastTokenType;
-    RefPtr<XPathNSResolver> m_resolver;
+    RefPtrWillBePersistent<XPathNSResolver> m_resolver;
 
     HashSet<ParseNode*> m_parseNodes;
     HashSet<Vector<OwnPtr<Predicate> >*> m_predicateVectors;