[Oilpan] Migrate most classes under core/animations to Oilpan heap.

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 551 matching lines @@
     if (this == &axObjectCacheOwner())
         clearAXObjectCache();
 
 #if !ENABLE(OILPAN)
     if (m_styleSheetList)
         m_styleSheetList->detachFromDocument();
 
     if (m_importsController)
         HTMLImportsController::removeFrom(*this);
 
-    m_timeline->detachFromDocument();
-
     // We need to destroy CSSFontSelector before destroying m_fetcher.
     m_styleEngine->detachFromDocument();
 
     if (m_elemSheet)
         m_elemSheet->clearOwnerNode();
 
     // It's possible for multiple Documents to end up referencing the same ResourceFetcher (e.g., SVGImages
     // load the initial empty document and the SVGDocument with the same DocumentLoader).
     FrameFetchContext& context = static_cast<FrameFetchContext&>(m_fetcher->context());
     if (context.document() == this)
@@ skipping 5173 matching lines @@
 #ifndef NDEBUG
 using namespace blink;
 void showLiveDocumentInstances()
 {
     WeakDocumentSet& set = liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (Document* document : set)
         fprintf(stderr, "- Document %p URL: %s\n", document, document->url().string().utf8().data());
 }
 #endif