Fix unused functions warnings on Linux.

Source/core/html/HTMLAnchorElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2003, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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 115 matching lines @@
 PassRefPtr<HTMLAnchorElement> HTMLAnchorElement::create(const QualifiedName& tagName, Document& document)
 {
     return adoptRef(new HTMLAnchorElement(tagName, document));
 }
 
 HTMLAnchorElement::~HTMLAnchorElement()
 {
     clearRootEditableElementForSelectionOnMouseDown();
 }
 
-// This function does not allow leading spaces before the port number.
-static unsigned parsePortFromStringPosition(const String& value, unsigned portStart, unsigned& portEnd)
-{
-    portEnd = portStart;
-    while (isASCIIDigit(value[portEnd]))
-        ++portEnd;
-    return value.substring(portStart, portEnd - portStart).toUInt();
-}
-
 bool HTMLAnchorElement::supportsFocus() const
 {
     if (rendererIsEditable())
         return HTMLElement::supportsFocus();
     // If not a link we should still be able to focus the element if it has tabIndex.
     return isLink() || HTMLElement::supportsFocus();
 }
 
 bool HTMLAnchorElement::isMouseFocusable() const
 {
@@ skipping 547 matching lines @@
     preconnectToURL(url, motivation);
     m_hasIssuedPreconnect = true;
 }
 
 bool HTMLAnchorElement::isInteractiveContent() const
 {
     return true;
 }
 
 }