Support union return type for anonymous named/indexed getter

Source/bindings/tests/results/V8TestInterface.cpp

Index: Source/bindings/tests/results/V8TestInterface.cpp
diff --git a/Source/bindings/tests/results/V8TestInterface.cpp b/Source/bindings/tests/results/V8TestInterface.cpp
index b18fdbbb12a766e23c50520b6680541b31dd319d..32abc91e712516c10f34e855840c1a51bf8d6815 100644
--- a/Source/bindings/tests/results/V8TestInterface.cpp
+++ b/Source/bindings/tests/results/V8TestInterface.cpp
@@ -24,10 +24,12 @@
 
 #include "RuntimeEnabledFeatures.h"
 #include "V8Node.h"
+#include "V8NodeList.h"
 #include "V8TestObject.h"
 #include "bindings/bindings/tests/idls/TestPartialInterface.h"
 #include "bindings/v8/ScriptController.h"
 #include "bindings/v8/V8Binding.h"
+#include "bindings/v8/V8Collection.h"
 #include "bindings/v8/V8DOMConfiguration.h"
 #include "bindings/v8/V8DOMWrapper.h"
 #include "bindings/v8/V8ObjectConstructor.h"
@@ -525,6 +527,27 @@ v8::Handle<v8::Value> V8TestInterface::constructorCallback(const v8::Arguments&
     return TestInterfaceV8Internal::constructor(args);
 }
 
+v8::Handle<v8::Value> V8TestInterface::namedPropertyGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
+{
+    if (!info.Holder()->GetRealNamedPropertyInPrototypeChain(name).IsEmpty())
+        return v8Undefined();
+    if (info.Holder()->HasRealNamedCallbackProperty(name))
+        return v8Undefined();
+
+    ASSERT(V8DOMWrapper::maybeDOMWrapper(info.Holder()));
+    TestInterface* collection = toNative(info.Holder());
+    AtomicString propertyName = toWebCoreAtomicString(name);
+    WTF::UnionType2<Node, NodeList> element = collection->getItem(propertyName);
+    if (element.isNull())
+        return v8Undefined();
+    if (element.member1())
+        return toV8Fast(element.member1(), info, collection);
+    if (element.member2())
+        return toV8Fast(element.member2(), info, collection);
+    ASSERT_NOT_REACHED();
+    return v8Undefined();
+}
+
 static v8::Persistent<v8::FunctionTemplate> ConfigureV8TestInterfaceTemplate(v8::Persistent<v8::FunctionTemplate> desc, v8::Isolate* isolate, WrapperWorldType currentWorldType)
 {
     desc->ReadOnlyPrototype();
@@ -550,6 +573,7 @@ static v8::Persistent<v8::FunctionTemplate> ConfigureV8TestInterfaceTemplate(v8:
     }
 
 #endif // ENABLE(Condition11) || ENABLE(Condition12)
+    desc->InstanceTemplate()->SetNamedPropertyHandler(V8TestInterface::namedPropertyGetter, 0, 0, 0, 0);
 
     // Custom Signature 'supplementalMethod2'
     const int supplementalMethod2Argc = 2;