Refactor Observatory

runtime/bin/vmservice/client/build_.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.
 
 import 'package:polymer/builder.dart';
 import 'dart:io';
-import 'dart:async';
 
 main() {
   lint()
     .then((_) => deploy()).then(compileToJs);
 }
 
 String findDart2JS() {
   var dartPath = Platform.executable;
   var lastIndex = dartPath.lastIndexOf(Platform.pathSeparator);
   if (lastIndex != -1) {
@@ skipping 17 matching lines @@
 }
 
 compileToJs(_) {
   print("Running dart2js");
   runDart2JS('out/web/index.html_bootstrap.dart',
              'out/web/index.html_bootstrap.dart.js');
   runDart2JS('out/web/index_devtools.html_bootstrap.dart',
              'out/web/index_devtools.html_bootstrap.dart.js');
   print("Done");
 }