Add constants and primitive type readonly attributes to Python IDL compiler

Source/bindings/tests/results/V8Float64Array.cpp

Index: Source/bindings/tests/results/V8Float64Array.cpp
diff --git a/Source/bindings/tests/results/V8Float64Array.cpp b/Source/bindings/tests/results/V8Float64Array.cpp
index 562bda89f450607320165c6277f918dc263f8fb9..b2b7dbfae42fc5169b1b84d093d5e769d4caf847 100644
--- a/Source/bindings/tests/results/V8Float64Array.cpp
+++ b/Source/bindings/tests/results/V8Float64Array.cpp
@@ -154,13 +154,13 @@ static v8::Handle<v8::FunctionTemplate> ConfigureV8Float64ArrayTemplate(v8::Hand
     defaultSignature = V8DOMConfiguration::installDOMClassTemplate(desc, "Float64Array", V8ArrayBufferView::GetTemplate(isolate, currentWorldType), V8Float64Array::internalFieldCount,
         0, 0,
         V8Float64ArrayMethods, WTF_ARRAY_LENGTH(V8Float64ArrayMethods), isolate, currentWorldType);
-    UNUSED_PARAM(defaultSignature); // In some cases, it will not be used.
+    UNUSED_PARAM(defaultSignature);
     desc->SetCallHandler(V8Float64Array::constructorCallback);
     desc->SetLength(1);
     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(Float64ArrayV8Internal::indexedPropertyGetterCallback, Float64ArrayV8Internal::indexedPropertySetterCallback, 0, 0, indexedPropertyEnumerator<Float64Array>);
 
     // Custom Signature 'foo'