Oilpan: Move the EventListener hierarchy to Oilpan's heap

Source/core/dom/ProcessingInstruction.h

 /*
  * Copyright (C) 2000 Peter Kelly (pmk@post.com)
  * Copyright (C) 2006 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 36 matching lines @@
     const String& localHref() const { return m_localHref; }
     StyleSheet* sheet() const { return m_sheet.get(); }
 
     bool isCSS() const { return m_isCSS; }
     bool isXSL() const { return m_isXSL; }
 
     void didAttributeChanged();
     bool isLoading() const;
 
     // For XSLT
-    class DetachableEventListener {
+    class DetachableEventListener : public WillBeGarbageCollectedMixin {
     public:
         virtual ~DetachableEventListener() { }
+        virtual EventListener* toEventListener() = 0;
+        // Detach event listener from its processing instruction.
+        virtual void detach() = 0;
 
+        DEFINE_INLINE_VIRTUAL_TRACE() { }
+
+#if !ENABLE(OILPAN)
         void ref() { refDetachableEventListener(); }
         void deref() { derefDetachableEventListener(); }
 
-        virtual EventListener* toEventListener() = 0;
-
-        // Detach event listener from its processing instruction.
-        virtual void detach() = 0;
-
     private:
         virtual void refDetachableEventListener() = 0;
         virtual void derefDetachableEventListener() = 0;
+#endif
     };
 
-    void setEventListenerForXSLT(PassRefPtr<DetachableEventListener> listener) { m_listenerForXSLT = listener; }
+    void setEventListenerForXSLT(PassRefPtrWillBeRawPtr<DetachableEventListener> listener) { m_listenerForXSLT = listener; }
     EventListener* eventListenerForXSLT();
     void clearEventListenerForXSLT();
 
 private:
     ProcessingInstruction(Document&, const String& target, const String& data);
 
     String nodeName() const override;
     NodeType nodeType() const override;
     PassRefPtrWillBeRawPtr<Node> cloneNode(bool deep = true) override;
 
@@ skipping 15 matching lines @@
     String m_localHref;
     String m_title;
     String m_media;
     RefPtrWillBeMember<StyleSheet> m_sheet;
     bool m_loading;
     bool m_alternate;
     bool m_createdByParser;
     bool m_isCSS;
     bool m_isXSL;
 
-    RefPtr<DetachableEventListener> m_listenerForXSLT;
+    RefPtrWillBeMember<DetachableEventListener> m_listenerForXSLT;
 };
 
 DEFINE_NODE_TYPE_CASTS(ProcessingInstruction, nodeType() == Node::PROCESSING_INSTRUCTION_NODE);
 
 inline bool isXSLStyleSheet(const Node& node)
 {
     return node.nodeType() == Node::PROCESSING_INSTRUCTION_NODE && toProcessingInstruction(node).isXSL();
 }
 
 } // namespace blink
 
 #endif // ProcessingInstruction_h