Commit Martin's patch for pub + lib_v2.

utils/pub/log.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.
 
 /// Message logging.
 library log;
 
+import 'dart:async';
 import 'dart:io';
 import 'io.dart';
 
 typedef LogFn(Entry entry);
 final Map<Level, LogFn> _loggers = new Map<Level, LogFn>();
 
 /// The list of recorded log messages. Will only be recorded if
 /// [recordTranscript()] is called.
 List<Entry> _transcript;
 
@@ skipping 201 matching lines @@
         stream.writeString('    | ');
       }
     }
 
     stream.writeString(line);
     stream.writeString('\n');
 
     firstLine = false;
   }
 }