Refactor VM service IDs

tests/standalone/vmservice/test_helper.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.
 
 library vmservice_test_helper;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 import 'package:expect/expect.dart';
@@ skipping 237 matching lines @@
       if (klass['user_name'] == user_name) {
         return klass['id'];
       }
     }
     return -1;
   }
 }
 
 class FieldRequestHelper extends VmServiceRequestHelper {
   FieldRequestHelper(port, isolate_id, field_id) :
-      super('http://127.0.0.1:$port/isolates/$isolate_id/objects/$field_id');
+      super('http://127.0.0.1:$port/$isolate_id/$field_id');
   Map field;
   onRequestCompleted(Map reply) {
     Expect.equals('Field', reply['type']);
     field = reply;
     return new Future.value(this);
   }
 }
 
 class ClassFieldRequestHelper extends VmServiceRequestHelper {
   final List<String> fieldNames;
   int port_;
   int isolate_id_;
   ClassFieldRequestHelper(port, isolate_id, class_id, this.fieldNames) :
-      super('http://127.0.0.1:$port/isolates/$isolate_id/classes/$class_id') {
+      super('http://127.0.0.1:$port/$isolate_id/$class_id') {
     port_ = port;
     isolate_id_ = isolate_id;
   }
   final Map<String, Map> fields = new Map<String, Map>();
 
   onRequestCompleted(Map reply) {
     Expect.equals('Class', reply['type']);
     List<Map> class_fields = reply['fields'];
     List<Future> requests = new List<Future>();
     fieldNames.forEach((fn) {
       class_fields.forEach((f) {
         if (f['user_name'] == fn) {
           var request = new FieldRequestHelper(port_, isolate_id_, f['id']);
           requests.add(request.makeRequest());
         }
       });
     });
     return Future.wait(requests).then((a) {
       a.forEach((FieldRequestHelper field) {
         fields[field.field['user_name']] = field.field;
       });
       return this;
     });
   }
 }