Remove some dead code in dom/

Source/core/dom/Position.h

 /*
  * Copyright (C) 2004, 2006, 2008 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 190 matching lines @@
     void formatForDebugger(char* buffer, unsigned length) const;
     void showAnchorTypeAndOffset() const;
     void showTreeForThis() const;
 #endif
 
 private:
     int offsetForPositionAfterAnchor() const;
 
     int renderedOffset() const;
 
-
     Position previousCharacterPosition(EAffinity) const;
-    Position nextCharacterPosition(EAffinity) const;
 
     static AnchorType anchorTypeForLegacyEditingPosition(Node* anchorNode, int offset);
 
     RefPtr<Node> m_anchorNode;
     // m_offset can be the offset inside m_anchorNode, or if editingIgnoresContent(m_anchorNode)
     // returns true, then other places in editing will treat m_offset == 0 as "before the anchor"
     // and m_offset > 0 as "after the anchor node".  See parentAnchoredEquivalent for more info.
     int m_offset;
     unsigned m_anchorType : 3;
     bool m_isLegacyEditingPosition : 1;
@@ skipping 116 matching lines @@
 
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const WebCore::Position&);
 void showTree(const WebCore::Position*);
 #endif
 
 #endif // Position_h