IDL: Generate union type containers

Source/core/html/HTMLOptionsCollection.cpp

Index: Source/core/html/HTMLOptionsCollection.cpp
diff --git a/Source/core/html/HTMLOptionsCollection.cpp b/Source/core/html/HTMLOptionsCollection.cpp
index cc465b5142b3395bc5d72f86d8bfe8f43b8b6a43..86bc30511f58b4ae01682cfe710ac7985296fe89 100644
--- a/Source/core/html/HTMLOptionsCollection.cpp
+++ b/Source/core/html/HTMLOptionsCollection.cpp
@@ -24,6 +24,7 @@
 
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/UnionTypesCore.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/StaticNodeList.h"
 #include "core/html/HTMLOptionElement.h"
@@ -117,7 +118,7 @@ void HTMLOptionsCollection::setLength(unsigned length, ExceptionState& exception
     toHTMLSelectElement(ownerNode()).setLength(length, exceptionState);
 }
 
-void HTMLOptionsCollection::namedGetter(const AtomicString& name, RefPtrWillBeRawPtr<NodeList>& returnValue0, RefPtrWillBeRawPtr<Element>& returnValue1)
+void HTMLOptionsCollection::namedGetter(const AtomicString& name, NodeListOrElement& returnValue)
 {
     WillBeHeapVector<RefPtrWillBeMember<Element> > namedItems;
     this->namedItems(name, namedItems);
@@ -126,12 +127,12 @@ void HTMLOptionsCollection::namedGetter(const AtomicString& name, RefPtrWillBeRa
         return;
 
     if (namedItems.size() == 1) {
-        returnValue1 = namedItems.at(0);
+        returnValue.setElement(namedItems.at(0));
         return;
     }
 
     // FIXME: The spec and Firefox do not return a NodeList. They always return the first matching Element.
-    returnValue0 = StaticElementList::adopt(namedItems);
+    returnValue.setNodeList(StaticElementList::adopt(namedItems));
 }
 
 bool HTMLOptionsCollection::anonymousIndexedSetter(unsigned index, PassRefPtrWillBeRawPtr<HTMLOptionElement> value, ExceptionState& exceptionState)