Replace [TreatNullAs=functionName] with [StrictTypeChecking]

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 1532 matching lines @@
 
 void HTMLSelectElement::finishParsingChildren()
 {
     HTMLFormControlElementWithState::finishParsingChildren();
     m_isParsingInProgress = false;
     updateListItemSelectedStates();
 }
 
 bool HTMLSelectElement::anonymousIndexedSetter(unsigned index, PassRefPtr<HTMLOptionElement> value, ExceptionState& exceptionState)
 {
-    if (!value) {
-        exceptionState.throwTypeError(ExceptionMessages::failedToSet(String::number(index), "HTMLSelectElement", "The value provided was not an HTMLOptionElement."));
-        return false;
+    if (!value) { // undefined or null
+        remove(index);
+        return true;
     }
     setOption(index, value.get(), exceptionState);
     return true;
 }
 
-bool HTMLSelectElement::anonymousIndexedSetterRemove(unsigned index, ExceptionState& exceptionState)
-{
-    remove(index);
-    return true;
-}
-
 bool HTMLSelectElement::isInteractiveContent() const
 {
     return true;
 }
 
 bool HTMLSelectElement::supportsAutofocus() const
 {
     return true;
 }
 
 } // namespace