Moving timing info to utils.dart:DebugLogger

tools/testing/dart/utils.dart

 // Copyright (c) 2013, 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 utils;
 
 import 'dart:io';
 import 'dart:async';
 import 'dart:utf' as utf;
 
@@ skipping 22 matching lines @@
     msg += ": $error";
     // TODO(floitsch): once the dart-executable that is bundled
     // with the Dart sources is updated, uncomment the following
     // lines.
     // var trace = getAttachedStackTrace(error);
     // if (trace != null) msg += "\nStackTrace: $trace";
     return msg;
   }
   static void info(String msg, [error]) {
     msg = _formatErrorMessage(msg, error);
-    _print("Info: $msg");
+    _print("$_datetime Info: $msg");
   }
 
   static void warning(String msg, [error]) {
     msg = _formatErrorMessage(msg, error);
-    _print("Warning: $msg");
+    _print("$_datetime Warning: $msg");
   }
 
   static void error(String msg, [error]) {
     msg = _formatErrorMessage(msg, error);
-    _print("Error: $msg");
+    _print("$_datetime Error: $msg");
   }
 
   static void _print(String msg) {
     if (_sink != null) {
       _sink.writeln(msg);
     } else {
       print(msg);
     }
   }
+
+  static String get _datetime => "${new DateTime.now()}";
 }
 
 List<int> encodeUtf8(String string) {
   return utf.encodeUtf8(string);
 }
 
 // TODO(kustermann,ricow): As soon we have a debug log we should log
 // invalid utf8-encoded input to the log.
 // Currently invalid bytes will be replaced by a replacement character.
 String decodeUtf8(List<int> bytes) {
   return utf.decodeUtf8(bytes);
 }