Refactor dart:developer log to use named parameters

runtime/observatory/tests/service/logging_test.dart

 // 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.
 // VMOptions=--compile_all --error_on_bad_type --error_on_bad_override
 
 import 'dart:developer' as developer;
 import 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 import 'package:logging/logging.dart';
 
 import 'test_helper.dart';
 
 void init() {
   Logger.root.level = Level.ALL;
-  Logger.root.onRecord.listen(developer.logOnRecord);
+  Logger.root.onRecord.listen((logRecord) {
+    developer.log(
+        sequenceNumber: logRecord.sequenceNumber,
+        millisecondsSinceEpoch: logRecord.time.millisecondsSinceEpoch,
+        level: logRecord.level.value,
+        name: logRecord.loggerName,
+        message: logRecord.message,
+        zone: null,
+        error: logRecord.error,
+        stackTrace: logRecord.stackTrace);
+  });
 }
 
 void run() {
   developer.debugger();
   Logger.root.fine('Hey Buddy!');
   developer.debugger();
   Logger.root.info('YES');
 }
 
 var tests = [
@@ skipping 11 matching lines @@
     expect(event.logRecord['level'], equals(Level.INFO));
     expect(event.logRecord['message'].valueAsString, equals('YES'));
     expect(event.logRecord['time'], new isInstanceOf<DateTime>());
   }),
 ];
 
 main(args) => runIsolateTests(args,
                               tests,
                               testeeBefore: init,
                               testeeConcurrent: run);