Remove the concept of document.documentElement

sky/engine/core/rendering/RenderBlock.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 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 276 matching lines @@
 
     Position positionForBox(InlineBox*, bool start = true) const;
     PositionWithAffinity positionForPointWithInlineChildren(const LayoutPoint&);
 
     // End helper functions and structs used by layoutChildren.
 
     void removeFromGlobalMaps();
     bool widthAvailableToChildrenHasChanged();
 
 protected:
-    bool createsBlockFormattingContext() const;
-
     virtual bool updateLogicalWidthAndColumnWidth();
 
 protected:
     RenderObjectChildList m_children;
     RenderLineBoxList m_lineBoxes;   // All of the root line boxes created for this block flow.  For example, <div>Hello<br>world.</div> will have two total lines for the <div>.
 
     LayoutUnit m_pageLogicalOffset;
 
     unsigned m_hasMarginBeforeQuirk : 1; // Note these quirk values can't be put in RenderBlockRareData since they are set too frequently.
     unsigned m_hasMarginAfterQuirk : 1;
     unsigned m_beingDestroyed : 1;
     unsigned m_hasBorderOrPaddingLogicalWidthChanged : 1;
 
     // FIXME-BLOCKFLOW: Remove this when the line layout stuff has all moved out of RenderBlock
     friend class LineBreaker;
 
     // FIXME: This is temporary as we move code that accesses block flow
     // member variables out of RenderBlock and into RenderBlockFlow.
     friend class RenderBlockFlow;
     friend class RenderParagraph;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderBlock, isRenderBlock());
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_RENDERING_RENDERBLOCK_H_