Oilpan: Move the EventListener hierarchy to Oilpan's heap

Source/core/svg/SVGElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
  *
  * 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
@@ skipping 723 matching lines @@
 {
     ASSERT(element);
     if (element->containingShadowRoot())
         return;
 
     ASSERT(!element->instanceUpdatesBlocked());
 
     instances = element->instancesForElement();
 }
 
-bool SVGElement::addEventListener(const AtomicString& eventType, PassRefPtr<EventListener> prpListener, bool useCapture)
+bool SVGElement::addEventListener(const AtomicString& eventType, PassRefPtrWillBeRawPtr<EventListener> prpListener, bool useCapture)
 {
-    RefPtr<EventListener> listener = prpListener;
+    RefPtrWillBeRawPtr<EventListener> listener = prpListener;
 
     // Add event listener to regular DOM element
     if (!Node::addEventListener(eventType, listener, useCapture))
         return false;
 
     // Add event listener to all shadow tree DOM element instances
     WillBeHeapHashSet<RawPtrWillBeWeakMember<SVGElement>> instances;
     collectInstancesForSVGElement(this, instances);
     for (SVGElement* element : instances) {
         bool result = element->Node::addEventListener(eventType, listener, useCapture);
         ASSERT_UNUSED(result, result);
     }
 
     return true;
 }
 
-bool SVGElement::removeEventListener(const AtomicString& eventType, PassRefPtr<EventListener> prpListener, bool useCapture)
+bool SVGElement::removeEventListener(const AtomicString& eventType, PassRefPtrWillBeRawPtr<EventListener> prpListener, bool useCapture)
 {
-    RefPtr<EventListener> listener = prpListener;
+    RefPtrWillBeRawPtr<EventListener> listener = prpListener;
 
     // Remove event listener from regular DOM element
     if (!Node::removeEventListener(eventType, listener, useCapture))
         return false;
 
     // Remove event listener from all shadow tree DOM element instances
     WillBeHeapHashSet<RawPtrWillBeWeakMember<SVGElement>> instances;
     collectInstancesForSVGElement(this, instances);
     for (SVGElement* shadowTreeElement : instances) {
         ASSERT(shadowTreeElement);
@@ skipping 388 matching lines @@
     Element::trace(visitor);
 }
 
 const AtomicString& SVGElement::eventParameterName()
 {
     DEFINE_STATIC_LOCAL(const AtomicString, evtString, ("evt", AtomicString::ConstructFromLiteral));
     return evtString;
 }
 
 } // namespace blink