Initial GUI for VM service

runtime/bin/vmservice/server.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_io;
 
 class Server {
   int port;
   static ContentType jsonContentType = ContentType.parse('application/json');
   final VmService service;
   HttpServer _server;
 
   Server(this.service, this.port);
 
   void _requestHandler(HttpRequest request) {
     // Allow cross origin requests.
     request.response.headers.add('Access-Control-Allow-Origin', '*');
 
     final String path =
           request.uri.path == '/' ? '/index.html' : request.uri.path;
 
     var resource = Resource.resources[path];
     if (resource != null) {
       // Serving up a static resource (e.g. .css, .html, .png).
-      request.response.headers.contentType = ContentType.parse(mimeType);
+      request.response.headers.contentType =
+          ContentType.parse(resource.mimeType);
       request.response.add(resource.data);
       request.response.close();
       return;
     }
 
     var serviceRequest = new ServiceRequest();
     var r = serviceRequest.parse(request.uri);
     if (!r) {
       // Did not understand the request uri.
       serviceRequest.setErrorResponse('Invalid request uri: ${request.uri}');
@@ skipping 25 matching lines @@
       port = s.port;
       _server = s;
       _server.listen(_requestHandler);
       if (display_message) {
         print('VmService listening on port $port');
       }
       return s;
     });
   }
 }