Revert "Cleanup deadcode in Rendering"

Source/core/html/HTMLSelectElement.cpp

Index: Source/core/html/HTMLSelectElement.cpp
diff --git a/Source/core/html/HTMLSelectElement.cpp b/Source/core/html/HTMLSelectElement.cpp
index 79e9e5b4c35c37f3d16cdb33ff6a440392f345b0..2a353bb472d393b91cb46404208258329310b9c8 100644
--- a/Source/core/html/HTMLSelectElement.cpp
+++ b/Source/core/html/HTMLSelectElement.cpp
@@ -177,6 +177,18 @@ bool HTMLSelectElement::valueMissing() const
     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())