Revert 28422

runtime/bin/vmservice/resources.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.
 
 part of vmservice;
 
 String detectMimeType(String name) {
-  var extensionStart = name.lastIndexOf('.');
-  var extension = name.substring(extensionStart+1);
+  var extension = new Path(name).extension;
   switch (extension) {
     case 'html':
       return 'text/html; charset=UTF-8';
     case 'dart':
       return 'application/dart; charset=UTF-8';
     case 'js':
       return 'application/javascript; charset=UTF-8';
     case 'css':
       return 'text/css; charset=UTF-8';
     case 'gif':
@@ skipping 14 matching lines @@
   final String name;
   final String mimeType;
   final List<int> data;
   Resource(this.name, this.mimeType, this.data);
   static final Map<String, Resource> resources = new Map<String, Resource>();
 }
 
 
 void _addResource(String name, List<int> data) {
   var mimeType = detectMimeType(name);
-  Resource resource = new Resource(name, mimeType, data);
+  Resource resource = new Resource(name, detectMimeType(name), data);
   Resource.resources[name] = resource;
 }