Oilpan: have xml/ objects on the heap by default.

Source/core/xml/XSLTProcessor.h

 /*
  * This file is part of the XSL implementation.
  *
  * Copyright (C) 2004, 2007, 2008 Apple, Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 21 matching lines @@
 
 #include <libxml/parserInternals.h>
 #include <libxslt/documents.h>
 
 namespace blink {
 
 class LocalFrame;
 class Document;
 class DocumentFragment;
 
-class XSLTProcessor : public RefCountedWillBeGarbageCollectedFinalized<XSLTProcessor>, public ScriptWrappable {
+class XSLTProcessor : public GarbageCollectedFinalized<XSLTProcessor>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static PassRefPtrWillBeRawPtr<XSLTProcessor> create(Document& document)
+    static XSLTProcessor* create(Document& document)
     {
         ASSERT(RuntimeEnabledFeatures::xsltEnabled());
-        return adoptRefWillBeNoop(new XSLTProcessor(document));
+        return new XSLTProcessor(document);
     }
     ~XSLTProcessor();
 
     void setXSLStyleSheet(PassRefPtrWillBeRawPtr<XSLStyleSheet> styleSheet) { m_stylesheet = styleSheet; }
     bool transformToString(Node* source, String& resultMIMEType, String& resultString, String& resultEncoding);
     PassRefPtrWillBeRawPtr<Document> createDocumentFromSource(const String& source, const String& sourceEncoding, const String& sourceMIMEType, Node* sourceNode, LocalFrame*);
 
     // DOM methods
     void importStylesheet(PassRefPtrWillBeRawPtr<Node> style)
     {
@@ skipping 26 matching lines @@
 
     RefPtrWillBeMember<XSLStyleSheet> m_stylesheet;
     RefPtrWillBeMember<Node> m_stylesheetRootNode;
     RefPtrWillBeMember<Document> m_document;
     ParameterMap m_parameters;
 };
 
 } // namespace blink
 
 #endif // XSLTProcessor_h