Revert of Remove PaintInfo's paintingRoot

third_party/WebKit/Source/core/layout/LayoutObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google 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
@@ skipping 956 matching lines @@
     // IntRect can be larger than the integral size.
     IntRect absoluteBoundingBoxRect() const;
     // FIXME: This function should go away eventually
     IntRect absoluteBoundingBoxRectIgnoringTransforms() const;
 
     // Build an array of quads in absolute coords for line boxes
     virtual void absoluteQuads(Vector<FloatQuad>&, bool* /* wasFixed */ = nullptr) const { }
 
     static FloatRect absoluteBoundingBoxRectForRange(const Range*);
 
-    // The bounding box (see: absoluteBoundingBoxRect) including all descendant
-    // bounding boxes.
-    IntRect absoluteBoundingBoxRectIncludingDescendants() const;
+    // the rect that will be painted if this object is passed as the paintingRoot
+    IntRect paintingRootRect(IntRect& topLevelRect);
 
     // This function returns the minimal logical width this object can have
     // without overflowing. This means that all the opportunities for wrapping
     // have been taken.
     //
     // See INTRINSIC SIZES / PREFERRED LOGICAL WIDTHS above.
     //
     // CSS 2.1 calls this width the "preferred minimum width" (thus this name)
     // and "minimum content width" (for table).
     // However CSS 3 calls it the "min-content inline size".
@@ skipping 1106 matching lines @@
 void showTree(const blink::LayoutObject*);
 void showLineTree(const blink::LayoutObject*);
 void showLayoutTree(const blink::LayoutObject* object1);
 // We don't make object2 an optional parameter so that showLayoutTree
 // can be called from gdb easily.
 void showLayoutTree(const blink::LayoutObject* object1, const blink::LayoutObject* object2);
 
 #endif
 
 #endif // LayoutObject_h