Register NativeBehavior from WorldImpact.

tests/compiler/dart2js/serialization/model_test.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart2js.serialization_model_test;
 
 import 'dart:async';
 import 'dart:io';
 import 'package:async_helper/async_helper.dart';
 import 'package:expect/expect.dart';
@@ skipping 77 matching lines @@
       compilerDeserialized.resolverWorld.directlyInstantiatedClasses,
       "Directly instantiated classes mismatch",
       areElementsEquivalent,
       verbose: verbose);
 
   checkSets(
       compilerNormal.resolverWorld.instantiatedTypes,
       compilerDeserialized.resolverWorld.instantiatedTypes,
       "Instantiated types mismatch",
       areTypesEquivalent,
-      // TODO(johnniwinther): Ensure that all instantiated types are tracked.
-      failOnUnfound: false,
       verbose: verbose);
 
   checkSets(
       compilerNormal.resolverWorld.isChecks,
       compilerDeserialized.resolverWorld.isChecks,
       "Is-check mismatch",
       areTypesEquivalent,
       verbose: verbose);
 
   checkSets(
@@ skipping 75 matching lines @@
 
     if (failOnUnfound || remaining.isNotEmpty) {
       Expect.fail(message);
     } else {
       print(message);
     }
   } else if (verbose) {
     print(message);
   }
 }