Upgrade StackTrace to the latest SDK version.

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.
 
 (function() {
   'use strict';
 
   let dart_sdk = dart_library.import('dart_sdk');
   dart_sdk._isolate_helper.startRootIsolate(function() {}, []);
   let async_helper = dart_library.import('async_helper').async_helper;
@@ skipping 423 matching lines @@
       'map_keys2_test': fail,
       'map_to_string_test': fail,
       'nan_infinity_test_01_multi': fail,
       'null_nosuchmethod_test': fail,
       'null_test': fail,
       'num_sign_test': fail,
       'queue_test': fail,
       'regress_r21715_test': fail,
       'throw_half_surrogate_pair_test_02_multi': fail,
       'stacktrace_current_test': fail,
-      'stacktrace_fromstring_test': fail,
       'string_from_environment2_test': fail,
       'string_from_environment_test': fail,
       'string_from_list_test': skip_timeout,
       'string_fromcharcodes_test': skip_timeout,
       'string_operations_with_null_test': fail,
       'symbol_reserved_word_test_06_multi': fail,
       'symbol_reserved_word_test_09_multi': fail,
       'symbol_reserved_word_test_12_multi': fail,
       'throw_half_surrogate_pair_test_01_multi': fail,
       // TODO(rnystrom): Times out because it tests a huge number of
@@ skipping 342 matching lines @@
 
     for (let action of unittest_tests) {
       try {
         action();
       } catch (e) {
         console.error("Caught error tying to setup test:", e);
       }
     }
   });
 })();