Adapt TypeMask tests to new TypeMask interface.

tests/compiler/dart2js/simple_inferrer_test.dart

 // Copyright (c) 2013, 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.
 
 import 'package:expect/expect.dart';
 import "package:async_helper/async_helper.dart";
 import 'package:compiler/implementation/types/types.dart' show TypeMask;
 import 'type_mask_test_helper.dart';
 
 import 'compiler_helper.dart';
@@ skipping 691 matching lines @@
   testReturnNotEquals();
 }
 """;
 
 void main() {
   Uri uri = new Uri(scheme: 'source');
   var compiler = compilerFor(TEST, uri);
   asyncTest(() => compiler.runCompiler(uri).then((_) {
     var typesTask = compiler.typesTask;
     var typesInferrer = typesTask.typesInferrer;
+    var world = compiler.world;
 
     checkReturn(String name, type) {
       var element = findElement(compiler, name);
       Expect.equals(
           type,
           simplify(typesInferrer.getReturnTypeOfElement(element), compiler),
           name);
     }
     var interceptorType =
         findTypeMask(compiler, 'Interceptor', 'nonNullSubclass');
@@ skipping 99 matching lines @@
     checkReturnInClass('B', 'returnInt4', typesTask.positiveIntType);
     checkReturnInClass('B', 'returnInt5', typesTask.positiveIntType);
     checkReturnInClass('B', 'returnInt6', typesTask.positiveIntType);
     checkReturnInClass('B', 'returnInt7', typesTask.positiveIntType);
     checkReturnInClass('B', 'returnInt8', typesTask.positiveIntType);
     checkReturnInClass('B', 'returnInt9', typesTask.uint31Type);
 
     checkFactoryConstructor(String className, String factoryName) {
       var cls = findElement(compiler, className);
       var element = cls.localLookup(factoryName);
-      Expect.equals(new TypeMask.nonNullExact(cls),
+      Expect.equals(new TypeMask.nonNullExact(cls, world),
                     typesInferrer.getReturnTypeOfElement(element));
     }
     checkFactoryConstructor('A', '');
 
     checkReturn('testCascade1', typesTask.growableListType);
     checkReturn('testCascade2', new TypeMask.nonNullExact(
-        findElement(compiler, 'CascadeHelper')));
+        findElement(compiler, 'CascadeHelper'), world));
     checkReturn('testSpecialization1', typesTask.numType);
     checkReturn('testSpecialization2', typesTask.dynamicType);
     checkReturn('testSpecialization3', typesTask.uint31Type.nullable());
     checkReturn('testReturnNull1', typesTask.nullType);
     checkReturn('testReturnNull2', typesTask.nullType);
     checkReturn('testReturnNull3', typesTask.dynamicType);
     checkReturn('testReturnNull4', typesTask.nullType);
     checkReturn('testReturnNull5', typesTask.nullType);
     checkReturn('testReturnNull6', typesTask.dynamicType);
     checkReturn('testReturnNotEquals', typesTask.boolType);
   }));
 }