fix how DDC finds its undefined constant

pkg/dev_compiler/test/codegen_expected/unresolved_names.js

Index: pkg/dev_compiler/test/codegen_expected/unresolved_names.js
diff --git a/pkg/dev_compiler/test/codegen_expected/unresolved_names.js b/pkg/dev_compiler/test/codegen_expected/unresolved_names.js
index 43e049a8b376d1afe3d1eca594afe1b4031a2243..73e2874672b4a723a4195cb1d667b9c6d20a8738 100644
--- a/pkg/dev_compiler/test/codegen_expected/unresolved_names.js
+++ b/pkg/dev_compiler/test/codegen_expected/unresolved_names.js
@@ -8,6 +8,7 @@ define(['dart_sdk'], function(dart_sdk) {
   unresolved_names.C = class C extends core.Object {};
   (unresolved_names.C.new = function() {
   }).prototype = unresolved_names.C.prototype;
+  dart.addTypeTests(unresolved_names.C);
   unresolved_names.main = function() {
     new (dart.throw(Error("compile error: unresolved constructor: dynamic.<unnamed>")))();
     new (dart.throw(Error("compile error: unresolved constructor: C.bar")))();