Build Observatory with runtime

runtime/observatory/bin/server.dart

 // Copyright (c) 2014, 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 observatory_server;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
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   }
 }
 
 main(List<String> args) {
   hierarchicalLoggingEnabled = true;
   logger.level = Level.ALL;
   logger.onRecord.listen(print);
   new ObservatoryServer(args)..start();
 }