Complete the switch to ServiceObject

runtime/bin/vmservice/client/lib/src/elements/breakpoint_list.dart

Index: runtime/bin/vmservice/client/lib/src/elements/breakpoint_list.dart
diff --git a/runtime/bin/vmservice/client/lib/src/elements/breakpoint_list.dart b/runtime/bin/vmservice/client/lib/src/elements/breakpoint_list.dart
index 7a3f55b58cc6eaa944d87af73b25dec9d0f6d02f..bb696093f3f2ca2ab126f43d2e2dc13e9b3a4fc7 100644
--- a/runtime/bin/vmservice/client/lib/src/elements/breakpoint_list.dart
+++ b/runtime/bin/vmservice/client/lib/src/elements/breakpoint_list.dart
@@ -4,22 +4,18 @@
 
 library breakpoint_list_element;
 
-import 'isolate_element.dart';
-import 'package:logging/logging.dart';
+import 'observatory_element.dart';
+import 'package:observatory/service.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 IsolateElement {
-  @published Map msg = toObservable({});
+class BreakpointListElement extends ObservatoryElement {
+  @published ServiceMap msg;
 
   BreakpointListElement.created() : super.created();
 
   void refresh(var done) {
-    isolate.getMap('breakpoints').then((map) {
-      msg = map;
-    }).catchError((e, trace) {
-      Logger.root.severe('Error while refreshing breakpoint-list: $e\n$trace');
-    }).whenComplete(done);
+    msg.refresh().whenComplete(done);
   }
 }