Refactor dart:developer log to use named parameters

sdk/lib/developer/developer.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.
 
 /// Interact with developer tools such as the debugger and inspector.
 ///
 /// The dart:developer library is _unstable_ and its API might change slightly
 /// as a result of developer feedback. This library is platform dependent and
 /// therefore it has implementations for both dart2js and the Dart VM. Both are
 /// under development and may not support all operations yet.
@@ skipping 25 matching lines @@
 
 /// Emit a log event.
 /// [sequenceNumber] is a monotonically increasing sequence number.
 /// [millisececondsSinceEpoch] is a timestamp.
 /// [level] is the severity level (value between 0 and 2000 inclusive).
 /// [name] is the name of the source of the log message.
 /// [message] is the log message.
 /// [zone] (optional) the zone where the log was emitted
 /// [error] (optional) an error object associated with this log event.
 /// [stackTrace] (optional) a stack trace associated with this log event.
-external log(int sequenceNumber,
-             int millisecondsSinceEpoch,
-             int level,
-             String name,
-             String message,
-             [Zone zone,
+external log({int sequenceNumber,
+              int millisecondsSinceEpoch,
+              int level,
+              String name,
+              String message,
+              Zone zone,
               Object error,
-              StackTrace stackTrace]);
-
-/// Emit a log event for a a [LogRecord] from the [logging] package.
-void logOnRecord(dynamic logRecord) {
-  log(logRecord.sequenceNumber,
-      logRecord.time.millisecondsSinceEpoch,
-      logRecord.level.value,
-      logRecord.loggerName,
-      logRecord.message,
-      null,
-      logRecord.error,
-      logRecord.stackTrace);
-}
+              StackTrace stackTrace});