Oilpan: move RenderObjects off heap.

Source/core/rendering/RenderInline.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *
  * 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.
  *
@@ skipping 42 matching lines @@
 };
 
 static_assert(sizeof(RenderInline) == sizeof(SameSizeAsRenderInline), "RenderInline should stay small");
 
 RenderInline::RenderInline(Element* element)
     : RenderBoxModelObject(element)
 {
     setChildrenInline(true);
 }
 
-void RenderInline::trace(Visitor* visitor)
-{
-    visitor->trace(m_children);
-    RenderBoxModelObject::trace(visitor);
-}
-
 RenderInline* RenderInline::createAnonymous(Document* document)
 {
     RenderInline* renderer = new RenderInline(0);
     renderer->setDocumentForAnonymous(document);
     return renderer;
 }
 
 void RenderInline::willBeDestroyed()
 {
 #if ENABLE(ASSERT)
@@ skipping 1379 matching lines @@
 }
 
 void RenderInline::invalidateDisplayItemClients(DisplayItemList* displayItemList) const
 {
     RenderBoxModelObject::invalidateDisplayItemClients(displayItemList);
     for (InlineFlowBox* box = firstLineBox(); box; box = box->nextLineBox())
         displayItemList->invalidate(box->displayItemClient());
 }
 
 } // namespace blink