Add constants and primitive type readonly attributes to Python IDL compiler

Source/bindings/tests/results/V8TestEventTarget.cpp

Index: Source/bindings/tests/results/V8TestEventTarget.cpp
diff --git a/Source/bindings/tests/results/V8TestEventTarget.cpp b/Source/bindings/tests/results/V8TestEventTarget.cpp
index 1281f5d791d2bbeadc7dbdb977699309d1435cdb..40e2c64e54066f7be17bc7d4ffe394bea7312c9c 100644
--- a/Source/bindings/tests/results/V8TestEventTarget.cpp
+++ b/Source/bindings/tests/results/V8TestEventTarget.cpp
@@ -278,11 +278,11 @@ static v8::Handle<v8::FunctionTemplate> ConfigureV8TestEventTargetTemplate(v8::H
     defaultSignature = V8DOMConfiguration::installDOMClassTemplate(desc, "TestEventTarget", V8EventTarget::GetTemplate(isolate, currentWorldType), V8TestEventTarget::internalFieldCount,
         0, 0,
         V8TestEventTargetMethods, WTF_ARRAY_LENGTH(V8TestEventTargetMethods), isolate, currentWorldType);
-    UNUSED_PARAM(defaultSignature); // In some cases, it will not be used.
+    UNUSED_PARAM(defaultSignature);
     v8::Local<v8::ObjectTemplate> instance = desc->InstanceTemplate();
     v8::Local<v8::ObjectTemplate> proto = desc->PrototypeTemplate();
-    UNUSED_PARAM(instance); // In some cases, it will not be used.
-    UNUSED_PARAM(proto); // In some cases, it will not be used.
+    UNUSED_PARAM(instance);
+    UNUSED_PARAM(proto);
     desc->InstanceTemplate()->SetIndexedPropertyHandler(TestEventTargetV8Internal::indexedPropertyGetterCallback, TestEventTargetV8Internal::indexedPropertySetterCallback, 0, TestEventTargetV8Internal::indexedPropertyDeleterCallback, indexedPropertyEnumerator<TestEventTarget>);
     desc->InstanceTemplate()->SetNamedPropertyHandler(TestEventTargetV8Internal::namedPropertyGetterCallback, TestEventTargetV8Internal::namedPropertySetterCallback, TestEventTargetV8Internal::namedPropertyQueryCallback, TestEventTargetV8Internal::namedPropertyDeleterCallback, TestEventTargetV8Internal::namedPropertyEnumeratorCallback);
     desc->InstanceTemplate()->MarkAsUndetectable();