Observatory requests coverage per script

runtime/bin/vmservice/client/lib/src/elements/class_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 class_view_element;
 
 import 'dart:async';
 import 'observatory_element.dart';
 import 'package:observatory/service.dart';
 import 'package:polymer/polymer.dart';
@@ skipping 22 matching lines @@
         .then((ServiceMap obj) {
           retainedBytes = int.parse(obj['valueAsString']);
         });
   }
 
   void refresh(var done) {
     instances = null;
     retainedBytes = null;
     cls.reload().whenComplete(done);
   }
+
+  void refreshCoverage(var done) {
+    cls.refreshCoverage().whenComplete(done);
+  }
 }