config_service: fix testing

appengine/config_service/ui/src/config-ui/config-set.html

 <!--
   Copyright 2017 The LUCI Authors. All rights reserved.
   Use of this source code is governed under the Apache License, Version 2.0
   that can be found in the LICENSE file.
 -->
 
 <link rel="import" href="config-file-card.html">
 <link rel="import" href="../../bower_components/iron-ajax/iron-ajax.html">
 <link rel="import" href="../../bower_components/iron-icons/iron-icons.html">
 <link rel="import" href="../../bower_components/paper-item/paper-item.html">
@@ skipping 212 matching lines @@
       },
 
       _formatCategory: function(category) {
         if (category === "projects") return "Project";
         if (category === "services") return "Service";
       },
 
       _onCompleteRefresh: function() {
         this.isRefreshing = false;
         this.refreshMessage = "Refresh successful.";
+        this.fire('refreshComplete');
       },
 
       _not: function(b) {
         return !b;
       },
 
       _onGotConfigFiles: function(event) {
         this.files = event.detail.response.config_sets[0].files || [];
         this.location = event.detail.response.config_sets[0].location;
         this.lastImportAttempt = 
             event.detail.response.config_sets[0].last_import_attempt || null;
         this.isLoading = false;
+        this.fire('processedConfigFiles');
       },
 
       _onRefreshError: function() {
         this.isRefreshing = false;
         this.refreshMessage = "Error: Files could not be refreshed.";
+        this.fire('refreshError');
       }
     });
   </script>
 </dom-module>