Fix getSetterType in presence of metadata

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', 'is', 'require'],
       function(dart_sdk, async_helper, expect, unittest, is, require) {
   'use strict';
 
   async_helper = async_helper.async_helper;
   let minitest = expect.minitest;
@@ skipping 270 matching lines @@
       'reg_exp_start_end_test': whitelist,
       'regress_r21715_test': fail,
       'sort_test': whitelist,
       'splay_tree_from_iterable_test': is.firefox('<=50') ? fail : pass,
       'string_case_test_01_multi': firefox_fail,
       'string_fromcharcodes_test': skip_timeout,
       'string_operations_with_null_test': fail,
       'string_split_test': whitelist,
       'string_trimlr_test_01_multi': is.chrome('<=58') ? fail : pass,
       'string_trimlr_test_none_multi': is.chrome('<=58') ? fail : pass,
+      'symbol_operator_test_03_multi': fail,
+      'symbol_operator_test_none_multi': fail,
       'symbol_reserved_word_test_06_multi': fail,
       'symbol_reserved_word_test_09_multi': fail,
       'symbol_reserved_word_test_12_multi': fail,
+      'symbol_test_none_multi': fail,
       'unicode_test': firefox_fail,
       'uri_parameters_all_test': is.firefox('<=50') ? fail : pass,
       // TODO(rnystrom): Times out because it tests a huge number of
       // combinations of URLs (4 * 5 * 5 * 8 * 6 * 6 * 4 = 115200).
       'uri_parse_test': skip_timeout,
       'uri_query_test': fail,
       // this is timing out on Chrome Canary only
       // pinning this skip in case it's a transient canary issue
       'uri_test': is.chrome('59') ? ['skip'] : ['slow'],
 
@@ skipping 600 matching lines @@
 
     for (let action of unittest_tests) {
       try {
         action();
       } catch (e) {
         console.error("Caught error tying to setup test:", e);
       }
     }
   });
 });