Handle super-method invocations in CPS->JS backend.

pkg/compiler/lib/src/js_backend/codegen/glue.dart

Index: pkg/compiler/lib/src/js_backend/codegen/glue.dart
diff --git a/pkg/compiler/lib/src/js_backend/codegen/glue.dart b/pkg/compiler/lib/src/js_backend/codegen/glue.dart
index bac9e33eed213c40faf2978b24d69feba821a77b..dbe95dabb40a33f84295d1e24dd86abf2abf1d24 100644
--- a/pkg/compiler/lib/src/js_backend/codegen/glue.dart
+++ b/pkg/compiler/lib/src/js_backend/codegen/glue.dart
@@ -89,4 +89,10 @@ class Glue {
     return _namer.instanceFieldPropertyName(field);
   }
 
+  js.Expression prototypeAccess(ClassElement e,
+                                {bool hasBeenInstantiated: false}) {
+    return _emitter.prototypeAccess(e,
+        hasBeenInstantiated: hasBeenInstantiated);
+  }
+
 }