Update dart2js unit tests to dart_parser and dart_scanner.

pkg/compiler/lib/src/diagnostics/messages.dart

 // Copyright (c) 2011, 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.
 
 /**
  * The messages in this file should meet the following guide lines:
  *
  * 1. The message should be a complete sentence starting with an uppercase
  * letter, and ending with a period.
  *
@@ skipping 3072 matching lines @@
 """
           ]),
 
       MessageKind.UNMATCHED_TOKEN: const MessageTemplate(
           MessageKind.UNMATCHED_TOKEN,
           "Can't find '#{end}' to match '#{begin}'.",
           howToFix: DONT_KNOW_HOW_TO_FIX,
           examples: const [
             "main(",
             "main(){",
-            "main(){]}",
+            "main(){[}",
+            // TODO(ahe): https://github.com/dart-lang/sdk/issues/28495
+            // "main(){]}",
           ]),
 
       MessageKind.UNTERMINATED_TOKEN: const MessageTemplate(
           MessageKind.UNTERMINATED_TOKEN,
           // This is a fall-back message that shouldn't happen.
           "Incomplete token."),
 
       MessageKind.EXPONENT_MISSING: const MessageTemplate(
           MessageKind.EXPONENT_MISSING,
           "Numbers in exponential notation should always contain an exponent"
@@ skipping 701 matching lines @@
   static String convertToString(value) {
     if (value is ErrorToken) {
       // Shouldn't happen.
       return value.assertionMessage;
     } else if (value is Token) {
       value = value.value;
     }
     return '$value';
   }
 }