Handle JS-calls in impact_test.

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

 // Copyright (c) 2016, 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 js_backend.serialization;
 
 import '../common/backend_api.dart' show BackendSerialization;
+import '../elements/elements.dart';
 import '../elements/resolution_types.dart';
-import '../elements/elements.dart';
+import '../elements/types.dart';
 import '../js/js.dart' as js;
 import '../native/native.dart';
 import '../serialization/keys.dart';
 import '../serialization/serialization.dart'
     show DeserializerPlugin, ObjectDecoder, ObjectEncoder, SerializerPlugin;
 import '../universe/side_effects.dart';
 import 'js_backend.dart';
 
 const String _BACKEND_DATA_TAG = 'jsBackendData';
 const Key DART_TYPES_RETURNED = const Key('dartTypesReturned');
@@ skipping 129 matching lines @@
     return NativeBehaviorSerialization.deserializeNativeBehavior(decoder);
   }
 }
 
 class NativeBehaviorSerialization {
   static const int NORMAL_TYPE = 0;
   static const int THIS_TYPE = 1;
   static const int SPECIAL_TYPE = 2;
 
   static int getTypeKind(var type) {
-    if (type is ResolutionDartType) {
+    if (type is DartType) {
       // TODO(johnniwinther): Remove this when annotation are no longer resolved
       // to this-types.
       if (type is GenericType &&
           type.isGeneric &&
           type == type.element.thisType) {
         return THIS_TYPE;
       }
       return NORMAL_TYPE;
     }
     return SPECIAL_TYPE;
@@ skipping 79 matching lines @@
       behavior.codeTemplate = js.js.parseForeignJS(behavior.codeTemplateText);
     }
 
     behavior.throwBehavior =
         decoder.getEnum(THROW_BEHAVIOR, NativeThrowBehavior.values);
     behavior.isAllocation = decoder.getBool(IS_ALLOCATION);
     behavior.useGvn = decoder.getBool(USE_GVN);
     return behavior;
   }
 }