Revert "dart2js: Pass type information to constructor rather than add later."

pkg/compiler/lib/src/js_emitter/lazy_emitter/model_emitter.dart

Index: pkg/compiler/lib/src/js_emitter/lazy_emitter/model_emitter.dart
diff --git a/pkg/compiler/lib/src/js_emitter/lazy_emitter/model_emitter.dart b/pkg/compiler/lib/src/js_emitter/lazy_emitter/model_emitter.dart
index 53f12e3ea2d9be9c2848581e865826ddc878e24b..14e0b75ba0312df86ef41417eb5ae1ed950b52b7 100644
--- a/pkg/compiler/lib/src/js_emitter/lazy_emitter/model_emitter.dart
+++ b/pkg/compiler/lib/src/js_emitter/lazy_emitter/model_emitter.dart
@@ -625,9 +625,6 @@ class ModelEmitter {
     // or RTI. In either case we don't need its fields.
     if (cls.isDirectlyInstantiated && !cls.isNative) {
       fieldNames = cls.fields.map((Field field) => field.name).toList();
-      if (cls.hasRtiField) {
-        fieldNames.add(namer.rtiFieldName);
-      }
     }
     js.Name name = cls.name;