Oilpan: avoid invoking some no-op finalizers.

Source/core/dom/ScriptedAnimationController.cpp

 /*
  * Copyright (C) 2011 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 33 matching lines @@
     return std::make_pair(event->target(), event->type().impl());
 }
 
 ScriptedAnimationController::ScriptedAnimationController(Document* document)
     : m_document(document)
     , m_nextCallbackId(0)
     , m_suspendCount(0)
 {
 }
 
-ScriptedAnimationController::~ScriptedAnimationController()
-{
-}
+DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(ScriptedAnimationController);
 
 void ScriptedAnimationController::trace(Visitor* visitor)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_callbacks);
     visitor->trace(m_callbacksToInvoke);
     visitor->trace(m_document);
     visitor->trace(m_eventQueue);
     visitor->trace(m_mediaQueryListListeners);
     visitor->trace(m_perFrameEvents);
@@ skipping 172 matching lines @@
         return;
 
     if (!m_callbacks.size() && !m_eventQueue.size() && !m_mediaQueryListListeners.size())
         return;
 
     if (FrameView* frameView = m_document->view())
         frameView->scheduleAnimation();
 }
 
 }