Remove some unused WebRange functions

Source/core/dom/Range.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Gunnstein Lye (gunnstein@netcom.no)
  * (C) 2000 Frederik Holljen (frederik.holljen@hig.no)
  * (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 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
@@ skipping 75 matching lines @@
     static short compareBoundaryPoints(const RangeBoundaryPoint& boundaryA, const RangeBoundaryPoint& boundaryB, ExceptionState&);
     bool boundaryPointsValid() const;
     bool intersectsNode(Node* refNode, ExceptionState&);
     static bool intersectsNode(Node* refNode, const Position& start, const Position& end, ExceptionState&);
     void deleteContents(ExceptionState&);
     PassRefPtrWillBeRawPtr<DocumentFragment> extractContents(ExceptionState&);
     PassRefPtrWillBeRawPtr<DocumentFragment> cloneContents(ExceptionState&);
     void insertNode(PassRefPtrWillBeRawPtr<Node>, ExceptionState&);
     String toString() const;
 
-    String toHTML() const;
     String text() const;
 
     PassRefPtrWillBeRawPtr<DocumentFragment> createContextualFragment(const String& html, ExceptionState&);
 
     void detach();
     PassRefPtrWillBeRawPtr<Range> cloneRange() const;
 
     void setStartAfter(Node*, ExceptionState& = ASSERT_NO_EXCEPTION);
     void setEndBefore(Node*, ExceptionState& = ASSERT_NO_EXCEPTION);
     void setEndAfter(Node*, ExceptionState& = ASSERT_NO_EXCEPTION);
@@ skipping 79 matching lines @@
 bool areRangesEqual(const Range*, const Range*);
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const blink::Range*);
 #endif
 
 #endif // Range_h