Refactor VM service IDs

tests/standalone/vmservice/test_helper.dart

Index: tests/standalone/vmservice/test_helper.dart
diff --git a/tests/standalone/vmservice/test_helper.dart b/tests/standalone/vmservice/test_helper.dart
index b584a86643296bf97d8f427728d3d212fa3886b2..b83fa10025a9fdc893f792627967d476de263ed3 100644
--- a/tests/standalone/vmservice/test_helper.dart
+++ b/tests/standalone/vmservice/test_helper.dart
@@ -255,7 +255,7 @@ class ClassTableHelper {
 
 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']);
@@ -269,7 +269,7 @@ class ClassFieldRequestHelper extends VmServiceRequestHelper {
   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;
   }