Remove painting roots.

sky/engine/core/rendering/RenderObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 1007 matching lines @@
 }
 
 void RenderObject::addAbsoluteRectForLayer(LayoutRect& result)
 {
     if (hasLayer())
         result.unite(absoluteBoundingBoxRect());
     for (RenderObject* current = slowFirstChild(); current; current = current->nextSibling())
         current->addAbsoluteRectForLayer(result);
 }
 
-LayoutRect RenderObject::paintingRootRect(LayoutRect& topLevelRect)
-{
-    LayoutRect result = absoluteBoundingBoxRect();
-    topLevelRect = result;
-    for (RenderObject* current = slowFirstChild(); current; current = current->nextSibling())
-        current->addAbsoluteRectForLayer(result);
-    return result;
-}
-
 void RenderObject::paint(PaintInfo&, const LayoutPoint&)
 {
 }
 
 const RenderLayerModelObject* RenderObject::containerForPaintInvalidation() const
 {
     return isRooted() ? view() : 0;
 }
 
 const RenderLayerModelObject* RenderObject::adjustCompositedContainerForSpecialAncestors(const RenderLayerModelObject* paintInvalidationContainer) const
@@ skipping 961 matching lines @@
 {
     if (object1) {
         const blink::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif