Cleanup: Start using toFoo methods as part of newly adopted coding guideline.

Source/core/rendering/RenderMenuList.cpp

 /*
  * This file is part of the select element renderer in WebCore.
  *
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *               2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.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 370 matching lines @@
     m_lastActiveIndex = optionIndex;
 
     HTMLSelectElement* select = selectElement();
     int listIndex = select->optionToListIndex(optionIndex);
     if (listIndex < 0 || listIndex >= static_cast<int>(select->listItems().size()))
         return;
 
     HTMLElement* listItem = select->listItems()[listIndex];
     ASSERT(listItem);
     if (listItem->attached()) {
-        if (AccessibilityMenuList* menuList = static_cast<AccessibilityMenuList*>(document().axObjectCache()->get(this)))
+        if (AccessibilityMenuList* menuList = toAccessibilityMenuList(document().axObjectCache()->get(this)))
             menuList->didUpdateActiveOption(optionIndex);
     }
 }
 
 String RenderMenuList::itemText(unsigned listIndex) const
 {
     HTMLSelectElement* select = selectElement();
     const Vector<HTMLElement*>& listItems = select->listItems();
     if (listIndex >= listItems.size())
         return String();
@@ skipping 208 matching lines @@
 {
     setTextFromOption(selectElement()->listToOptionIndex(listIndex));
 }
 
 FontSelector* RenderMenuList::fontSelector() const
 {
     return document().styleResolver()->fontSelector();
 }
 
 }