Remove the concept of document.documentElement

sky/engine/core/editing/FrameSelection.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 75 matching lines @@
     enum DirectoinalOption {
         NonDirectional,
         Directional
     };
     enum ResetCaretBlinkOption {
         None,
         ResetCaretBlink
     };
 
     Element* rootEditableElement() const { return m_selection.rootEditableElement(); }
-    Element* rootEditableElementOrDocumentElement() const;
     ContainerNode* rootEditableElementOrTreeScopeRootNode() const;
 
     bool hasEditableStyle() const { return m_selection.hasEditableStyle(); }
     bool isContentEditable() const { return m_selection.isContentEditable(); }
     bool isContentRichlyEditable() const { return m_selection.isContentRichlyEditable(); }
 
     void moveTo(const VisiblePosition&, EUserTriggered = NotUserTriggered, CursorAlignOnScroll = AlignCursorOnScrollIfNeeded);
     void moveTo(const VisiblePosition&, const VisiblePosition&, EUserTriggered = NotUserTriggered);
     void moveTo(const Position&, EAffinity, EUserTriggered = NotUserTriggered);
 
@@ skipping 178 matching lines @@
 }
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const blink::FrameSelection&);
 void showTree(const blink::FrameSelection*);
 #endif
 
 #endif  // SKY_ENGINE_CORE_EDITING_FRAMESELECTION_H_