Handle Creates and Returns annotations in KernelBehaviorBuilder

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/types.dart';
@@ skipping 142 matching lines @@
 
 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 DartType) {
       // TODO(johnniwinther): Remove this when annotation are no longer resolved
       // to this-types.
-      if (type is GenericType &&
-          type.isGeneric &&
-          type == type.element.thisType) {
+      if (type is InterfaceType &&
+          type.typeArguments.isNotEmpty &&
+          type.typeArguments.first is TypeVariableType) {
         return THIS_TYPE;
       }
       return NORMAL_TYPE;
     }
     return SPECIAL_TYPE;
   }
 
   /// Returns a list of the non-this-type [ResolutionDartType]s in [types].
   static List<ResolutionDartType> filterDartTypes(List types) {
     return types.where((type) => getTypeKind(type) == NORMAL_TYPE).toList();
@@ skipping 74 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;
   }
 }