Remove various Heap* types.

sky/engine/core/page/Page.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All Rights Reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 341 matching lines @@
 PageLifecycleNotifier& Page::lifecycleNotifier()
 {
     return static_cast<PageLifecycleNotifier&>(LifecycleContext<Page>::lifecycleNotifier());
 }
 
 PassOwnPtr<LifecycleNotifier<Page> > Page::createLifecycleNotifier()
 {
     return PageLifecycleNotifier::create(this);
 }
 
-void Page::trace(Visitor* visitor)
-{
-#if ENABLE(OILPAN)
-    visitor->trace(m_dragCaretController);
-    visitor->trace(m_undoStack);
-    visitor->trace(m_multisamplingChangedObservers);
-    visitor->trace(m_frameHost);
-#endif
-    Supplementable<Page>::trace(visitor);
-    LifecycleContext<Page>::trace(visitor);
-}
-
 void Page::willBeDestroyed()
 {
     RefPtr<LocalFrame> mainFrame = m_mainFrame;
 
     mainFrame->detach();
     mainFrame->setView(nullptr);
 
     allPages().remove(this);
     if (ordinaryPages().contains(this))
         ordinaryPages().remove(this);
@@ skipping 14 matching lines @@
     , editorClient(0)
     , spellCheckerClient(0)
 {
 }
 
 Page::PageClients::~PageClients()
 {
 }
 
 } // namespace blink