Use entities in runtime_types

pkg/compiler/lib/src/js_backend/enqueuer.dart

Index: pkg/compiler/lib/src/js_backend/enqueuer.dart
diff --git a/pkg/compiler/lib/src/js_backend/enqueuer.dart b/pkg/compiler/lib/src/js_backend/enqueuer.dart
index 91bf149eea56e09de8ff945268b2a6292ef6c391..318bb9f55778555c4ab3b1f9d991686d9a1843aa 100644
--- a/pkg/compiler/lib/src/js_backend/enqueuer.dart
+++ b/pkg/compiler/lib/src/js_backend/enqueuer.dart
@@ -216,9 +216,10 @@ class CodegenEnqueuer extends EnqueuerImpl {
     _worldBuilder.registerIsCheck(type);
   }
 
-  void _registerClosurizedMember(MemberElement element) {
+  void _registerClosurizedMember(FunctionEntity element) {
     assert(element.isInstanceMember);
     applyImpact(listener.registerClosurizedMember(element));
+    _worldBuilder.registerClosurizedMember(element);

[Siggi Cherem (dart-lang), 2017/05/17 16:14:11]

should "closurized-member" be encoded as part of the impact?

[Johnni Winther, 2017/05/18 08:10:56]

Cannot be done - it's is non-local property:

class C { 
  foo() {}
}
bar() => new C();
baz(o) => o.foo;
main() {
  var c = bar();
  return baz(c);
}

We need the combination of `new C()` and `o.foo` to see that `C.foo` is
closurized.

   }
 
   void forEach(void f(WorkItem work)) {