Refactor Observatory

runtime/bin/vmservice/client/lib/src/elements/isolate_list.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 isolate_list_element;
 
+import 'vm_element.dart';
 import 'dart:async';
-import 'dart:html';
 import 'package:polymer/polymer.dart';
-import 'observatory_element.dart';
 
 /// Displays an IsolateList response.
 @CustomTag('isolate-list')
-class IsolateListElement extends ObservatoryElement {
+class IsolateListElement extends VMElement {
   IsolateListElement.created() : super.created();
-  
+
   void refresh(var done) {
     var futures = [];
-    app.isolateManager.isolates.forEach((id, isolate) {
+    vm.isolates.forEach((id, isolate) {
        futures.add(isolate.refresh());
     });
     Future.wait(futures).then((_) => done());
   }
 }