Refactor Observatory

runtime/bin/vmservice/client/lib/src/elements/field_view.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 field_view_element;
 
+import 'isolate_element.dart';
 import 'package:logging/logging.dart';
 import 'package:polymer/polymer.dart';
-import 'observatory_element.dart';
 
 @CustomTag('field-view')
-class FieldViewElement extends ObservatoryElement {
+class FieldViewElement extends IsolateElement {
   @published Map field;
   FieldViewElement.created() : super.created();
 
   void refresh(var done) {
-    var url = app.locationManager.currentIsolateRelativeLink(field['id']);
-    app.requestManager.requestMap(url).then((map) {
+    isolate.getMap(field['id']).then((map) {
         field = map;
     }).catchError((e, trace) {
         Logger.root.severe('Error while refreshing field-view: $e\n$trace');
     }).whenComplete(done);
   }
 }