Empty reflected attributes and string literals in extended attributes.

Source/bindings/tests/idls/TestObject.idl

Index: Source/bindings/tests/idls/TestObject.idl
diff --git a/Source/bindings/tests/idls/TestObject.idl b/Source/bindings/tests/idls/TestObject.idl
index 4523dddf650d0d59a4ea373abd119afb63c3b128..c522bda136333276678e9f6a50ed76d7af891a75 100644
--- a/Source/bindings/tests/idls/TestObject.idl
+++ b/Source/bindings/tests/idls/TestObject.idl
@@ -80,6 +80,8 @@ callback TestCallbackFunction = void (TestEnumType formal1, TestObject formal2);
     [Reflect, ReflectOnly=rsa|dsa, ReflectMissing=rsa] attribute DOMString limitedWithMissingDefaultAttribute;
     [Reflect, ReflectOnly=ltr|rtl|auto, ReflectMissing=auto, ReflectInvalid=ltr] attribute DOMString limitedWithInvalidMissingDefaultAttribute;
     [Reflect, ReflectOnly=left|right, ReflectMissing=left, ReflectInvalid=left] attribute DOMString limitedWithInvalidAndMissingDefaultAttribute;
+    [Reflect, ReflectOnly=anonymous|use-credentials, ReflectEmpty=anonymous, ReflectInvalid=anonymous] readonly attribute DOMString corsSettingAttribute;
+    [Reflect, ReflectOnly=empty|missing|invalid|a-normal, ReflectEmpty=empty, ReflectMissing=missing, ReflectInvalid=invalid] readonly attribute DOMString limitedWithEmptyMissingInvalidAttribute;
 
     // TypedArray attribute
     attribute Float32Array typedArrayAttr;