Revert "Remove @deprecated features."

pkg/logging/test/logging_test.dart

 // Copyright (c) 2012, 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.
 
 
 library logging_test;
 
 import 'package:logging/logging.dart';
 import 'package:unittest/unittest.dart';
 
@@ skipping 261 matching lines @@
         'INFO: 5',
         'WARNING: 6',
         'SEVERE: 7',
         'SHOUT: 8']));
     });
 
     test('logging methods store exception', () {
       root.level = Level.ALL;
       var rootMessages = [];
       root.onRecord.listen((r) {
-        rootMessages.add('${r.level}: ${r.message} ${r.error}');
+        rootMessages.add('${r.level}: ${r.message} ${r.exception}');
       });
 
       root.finest('1');
       root.finer('2');
       root.fine('3');
       root.config('4');
       root.info('5');
       root.warning('6');
       root.severe('7');
       root.shout('8');
@@ skipping 124 matching lines @@
             'SHOUT: 10']));
 
       expect(cMessages, equals([
             // 1 - 7 are lower in the hierarchy
             // 'FINE: 8' is not loggable
             'WARNING: 9',
             'SHOUT: 10']));
     });
   });
 }