Refactor Observatory

runtime/bin/vmservice/client/lib/src/elements/breakpoint_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 breakpoint_list_element;
 
-import 'observatory_element.dart';
+import 'isolate_element.dart';
 import 'package:logging/logging.dart';
 import 'package:polymer/polymer.dart';
 
+// TODO(turnidge): Is a breakpoint list associated with a VM or an isolate?
 @CustomTag('breakpoint-list')
-class BreakpointListElement extends ObservatoryElement {
+class BreakpointListElement extends IsolateElement {
   @published Map msg = toObservable({});
 
   BreakpointListElement.created() : super.created();
 
   void refresh(var done) {
-    var url = app.locationManager.currentIsolateRelativeLink("breakpoints");
-    app.requestManager.requestMap(url).then((map) {
-        msg = map;
+    isolate.getMap('breakpoints').then((map) {
+      msg = map;
     }).catchError((e, trace) {
-          Logger.root.severe('Error while refreshing breakpoint-list: $e\n$trace');
+      Logger.root.severe('Error while refreshing breakpoint-list: $e\n$trace');
     }).whenComplete(done);
   }
 }