Update the navbar in the observatory

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

Index: runtime/bin/vmservice/client/lib/src/observatory_elements/breakpoint_list.dart
diff --git a/runtime/bin/vmservice/client/lib/src/observatory_elements/breakpoint_list.dart b/runtime/bin/vmservice/client/lib/src/observatory_elements/breakpoint_list.dart
index deab7a295acc7c9e2aaec7193cd54601f069df04..5b8b1a1d4fda712f0af03d43ffc5c2e7557b5383 100644
--- a/runtime/bin/vmservice/client/lib/src/observatory_elements/breakpoint_list.dart
+++ b/runtime/bin/vmservice/client/lib/src/observatory_elements/breakpoint_list.dart
@@ -5,6 +5,7 @@
 library breakpoint_list_element;
 
 import 'observatory_element.dart';
+import 'package:logging/logging.dart';
 import 'package:polymer/polymer.dart';
 
 @CustomTag('breakpoint-list')
@@ -12,4 +13,13 @@ class BreakpointListElement extends ObservatoryElement {
   @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;
+    }).catchError((e, trace) {
+          Logger.root.severe('Error while refreshing breakpoint-list: $e\n$trace');
+    }).whenComplete(done);
+  }
+}