Remove unused function of LayoutSelection::GetVisibleSelection()

third_party/WebKit/Source/core/editing/LayoutSelection.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 45 matching lines @@
       SelectionPaintInvalidationMode = kPaintInvalidationNewXOROld);
   void ClearSelection();
   void SelectionStartEnd(int& start_pos, int& end_pos);
   void OnDocumentShutdown();
 
   DECLARE_TRACE();
 
  private:
   LayoutSelection(FrameSelection&);
 
-  const VisibleSelection& GetVisibleSelection() const;
-
   SelectionInFlatTree CalcVisibleSelection(
       const VisibleSelectionInFlatTree&) const;
 
   Member<FrameSelection> frame_selection_;
   bool has_pending_selection_ : 1;
   bool force_hide_ : 1;
 
   // The current selection represented as 2 boundaries.
   // Selection boundaries are represented in LayoutView by a tuple
   // (LayoutObject, DOM node offset).
@@ skipping 10 matching lines @@
   // TODO(yosin): Clarify the meaning of these variables. editing/ passes
   // them as offsets in the DOM tree  but layout uses them as offset in the
   // layout tree.
   int selection_start_pos_;
   int selection_end_pos_;
 };
 
 }  // namespace blink
 
 #endif