Remove some unused WebRange functions

Source/core/dom/Range.cpp

 /*
  * (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, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Motorola Mobility. 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 971 matching lines @@
             int length = data.length();
             int start = (n == m_start.container()) ? std::min(std::max(0, m_start.offset()), length) : 0;
             int end = (n == m_end.container()) ? std::min(std::max(start, m_end.offset()), length) : length;
             builder.append(data, start, end - start);
         }
     }
 
     return builder.toString();
 }
 
-String Range::toHTML() const
-{
-    return createMarkup(this);
-}
-
 String Range::text() const
 {
     return plainText(this, TextIteratorEmitsObjectReplacementCharacter);
 }
 
 PassRefPtrWillBeRawPtr<DocumentFragment> Range::createContextualFragment(const String& markup, ExceptionState& exceptionState)
 {
     // Algorithm: http://domparsing.spec.whatwg.org/#extensions-to-the-range-interface
 
     Node* node = m_start.container();
@@ skipping 774 matching lines @@
 
 void showTree(const blink::Range* range)
 {
     if (range && range->boundaryPointsValid()) {
         range->startContainer()->showTreeAndMark(range->startContainer(), "S", range->endContainer(), "E");
         fprintf(stderr, "start offset: %d, end offset: %d\n", range->startOffset(), range->endOffset());
     }
 }
 
 #endif