fix #27532, implementing a native type with fields

pkg/dev_compiler/test/browser/language_tests.js

 // 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.
 
 define(['dart_sdk', 'async_helper', 'expect', 'unittest', 'require'],
       function(dart_sdk, async_helper, expect, unittest, require) {
   'use strict';
 
   async_helper = async_helper.async_helper;
   let minitest = expect.minitest;
@@ skipping 518 matching lines @@
     },
 
     'lib/math': {
       // TODO(het): triage
       'double_pow_test': skip_fail,
       'low_test': skip_fail,
       'math_test': skip_fail,
       'math2_test': skip_fail,
       'pi_test': skip_timeout,
       'random_big_test': skip_fail,
-      'rectangle_test': fail, // TODO(rnystrom): #27551
     },
 
     'lib/typed_data': {
       // No bigint or int64 support
       'int32x4_bigint_test': skip_fail,
       'int64_list_load_store_test': skip_fail,
       'typed_data_hierarchy_int64_test': skip_fail,
       'typed_data_list_test': fail,
     },
 
@@ skipping 294 matching lines @@
 
     for (let action of unittest_tests) {
       try {
         action();
       } catch (e) {
         console.error("Caught error tying to setup test:", e);
       }
     }
   });
 });