AX: remove unused AXObject::selectedText.

Source/core/html/HTMLTextFormControlElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2009, 2010, 2011 Google 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 52 matching lines @@
     const AtomicString& selectionDirection() const;
     void setSelectionStart(int);
     void setSelectionEnd(int);
     void setSelectionDirection(const String&);
     void select();
     virtual void setRangeText(const String& replacement, ExceptionState&);
     virtual void setRangeText(const String& replacement, unsigned start, unsigned end, const String& selectionMode, ExceptionState&);
     void setSelectionRange(int start, int end, const String& direction);
     void setSelectionRange(int start, int end, TextFieldSelectionDirection = SelectionHasNoDirection);
     PassRefPtr<Range> selection() const;
-    String selectedText() const;
 
     virtual void dispatchFormControlChangeEvent() OVERRIDE FINAL;
 
     virtual int maxLength() const = 0;
     virtual String value() const = 0;
 
     HTMLElement* innerTextElement() const;
 
     void selectionChanged(bool userTriggered);
     bool lastChangeWasUserEdit() const;
@@ skipping 58 matching lines @@
     return node.isElementNode() && toElement(node).isTextFormControl();
 }
 
 DEFINE_NODE_TYPE_CASTS_WITH_FUNCTION(HTMLTextFormControlElement);
 
 HTMLTextFormControlElement* enclosingTextFormControl(const Position&);
 
 } // namespace
 
 #endif