Revert "Cleanup deadcode in Rendering"

Source/core/html/HTMLSelectElement.cpp

 /*
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
@@ skipping 159 matching lines @@
 
     if (!isRequired())
         return false;
 
     int firstSelectionIndex = selectedIndex();
 
     // If a non-placeholer label option is selected (firstSelectionIndex > 0), it's not value-missing.
     return firstSelectionIndex < 0 || (!firstSelectionIndex && hasPlaceholderLabelOption());
 }
 
+void HTMLSelectElement::listBoxSelectItem(int listIndex, bool allowMultiplySelections, bool shift, bool fireOnChangeNow)
+{
+    if (!multiple())
+        optionSelectedByUser(listToOptionIndex(listIndex), fireOnChangeNow, false);
+    else {
+        updateSelectedState(listIndex, allowMultiplySelections, shift);
+        setNeedsValidityCheck();
+        if (fireOnChangeNow)
+            listBoxOnChange();
+    }
+}
+
 bool HTMLSelectElement::usesMenuList() const
 {
     if (RenderTheme::theme().delegatesMenuListRendering())
         return true;
 
     return !m_multiple && m_size <= 1;
 }
 
 int HTMLSelectElement::activeSelectionStartListIndex() const
 {
@@ skipping 1536 matching lines @@
     int focusedIndex = activeSelectionEndListIndex();
     if (focusedIndex < 0)
         focusedIndex = firstSelectableListIndex();
     if (focusedIndex < 0)
         return nullptr;
     HTMLElement* focused = listItems()[focusedIndex];
     return isHTMLOptionElement(focused) ? toHTMLOptionElement(focused) : nullptr;
 }
 
 } // namespace