[Reland] Remove PaintInfo's paintingRoot

third_party/WebKit/Source/core/layout/LayoutObject.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 1042 matching lines @@
 }
 
 void LayoutObject::addAbsoluteRectForLayer(IntRect& result)
 {
     if (hasLayer())
         result.unite(absoluteBoundingBoxRect());
     for (LayoutObject* current = slowFirstChild(); current; current = current->nextSibling())
         current->addAbsoluteRectForLayer(result);
 }
 
-IntRect LayoutObject::paintingRootRect(IntRect& topLevelRect)
+IntRect LayoutObject::absoluteBoundingBoxRectIncludingDescendants() const
 {
     IntRect result = absoluteBoundingBoxRect();
     for (LayoutObject* current = slowFirstChild(); current; current = current->nextSibling())
         current->addAbsoluteRectForLayer(result);
     return result;
 }
 
 void LayoutObject::paint(const PaintInfo&, const LayoutPoint&) const
 {
 }
@@ skipping 2465 matching lines @@
         const blink::LayoutObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showLayoutTreeAndMark(object1, "*", object2, "-", 0);
     } else {
         fprintf(stderr, "Cannot showLayoutTree. Root is (nil)\n");
     }
 }
 
 #endif