Oilpan: Move the EventListener hierarchy to Oilpan's heap

Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 253 matching lines @@
 {
     if (!*m_userGestureObserved && UserGestureIndicator::processedUserGestureSinceLoad()) {
         *m_userGestureObserved = true;
         if (m_client)
             m_client->firstUserGestureObserved();
     }
 }
 
 class EmptyEventListener final : public EventListener {
 public:
-    static PassRefPtr<EmptyEventListener> create()
+    static PassRefPtrWillBeRawPtr<EmptyEventListener> create()
     {
-        return adoptRef(new EmptyEventListener());
+        return adoptRefWillBeNoop(new EmptyEventListener());
     }
 
     bool operator==(const EventListener& other) override
     {
         return this == &other;
     }
 
 private:
     EmptyEventListener()
         : EventListener(CPPEventListenerType)
@@ skipping 4089 matching lines @@
 {
     WebGLRenderingContext::forceNextWebGLContextCreationToFail();
 }
 
 void WebViewImpl::forceNextDrawingBufferCreationToFail()
 {
     DrawingBuffer::forceNextDrawingBufferCreationToFail();
 }
 
 } // namespace blink