Add a VM page to the observatory.

tests/standalone/vmservice/isolate_bad_object_test.dart

Index: tests/standalone/vmservice/isolate_bad_object_test.dart
diff --git a/tests/standalone/vmservice/isolate_bad_object_test.dart b/tests/standalone/vmservice/isolate_bad_object_test.dart
index 8d156f6af6088a9bf44ac40913e5694583343569..8addb4c14b007a370033ba50aa152fcda7e566f1 100644
--- a/tests/standalone/vmservice/isolate_bad_object_test.dart
+++ b/tests/standalone/vmservice/isolate_bad_object_test.dart
@@ -26,12 +26,12 @@ class BadCollectionTest extends VmServiceRequestHelper {
   }
 }
 
-class IsolateListTest extends VmServiceRequestHelper {
-  IsolateListTest(port) : super('http://127.0.0.1:$port/isolates');
+class VMTest extends VmServiceRequestHelper {
+  VMTest(port) : super('http://127.0.0.1:$port/vm');
 
   String _isolateId;
   onRequestCompleted(Map reply) {
-    IsolateListTester tester = new IsolateListTester(reply);
+    VMTester tester = new VMTester(reply);
     tester.checkIsolateCount(1);
     _isolateId = tester.getIsolateId(0);
   }
@@ -40,7 +40,7 @@ class IsolateListTest extends VmServiceRequestHelper {
 main() {
   var process = new TestLauncher('unknown_isolate_command_script.dart');
   process.launch().then((port) {
-    var test = new IsolateListTest(port);
+    var test = new VMTest(port);
     test.makeRequest().then((_) {
       var badCollectionRequest =
           new BadCollectionTest(port, test._isolateId).makeRequest();