Simplify failing builder lists.

Tools/GardeningServer/ui/ct-unexpected-failures.html

 <!--
 Copyright 2014 The Chromium Authors. All rights reserved.
 Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
 -->
 
 <link rel="import" href="../bower_components/paper-button/paper-button.html">
 <link rel="import" href="../model/ct-commit-log.html">
 <link rel="import" href="ct-failing-builders.html">
 <link rel="import" href="ct-failure-analyzer.html">
@@ skipping 18 matching lines @@
 
       ct-tree-status[status=open] {
         margin: 0;
         padding: 0;
       }
     </style>
     <ct-failure-analyzer id="analyzer" failures="{{ failures }}" builderLatestRevisions="{{ builderLatestRevisions }}"></ct-failure-analyzer>
     <ct-tree-status project="chromium"></ct-tree-status>
     <ct-tree-status project="blink"></ct-tree-status>
     <ct-failing-builders builders="{{ failures.builders }}"></ct-failing-builders>
-    <ct-failure-stream groups="{{ failures.unexpected }}" builderLatestRevisions="{{ builderLatestRevisions }}" commits="{{revisionLog.commits}}"></ct-failure-stream>
+    <ct-failure-stream groups="{{ failures.unexpected }}" commits="{{revisionLog.commits}}"></ct-failure-stream>
   </template>
   <script>
+  (function() {
+    var kUpdateFrequency = 1000 * 30;
+
     Polymer({
       revisionLog: new CTCommitLog(),
 
       attached: function() {
         this.update();
-        setInterval(this.update.bind(this), config.kUpdateFrequency);
+        setInterval(this.update.bind(this), kUpdateFrequency);
       },
 
       update: function() {
         // FIXME: These shouldn't update if there's already an update in progress.
         this.revisionLog.update();
         this.$.analyzer.update();
         var treeStatuses = this.shadowRoot.querySelectorAll("ct-tree-status");
         for (var i = 0; i < treeStatuses.length; i++)
           treeStatuses[i].update();
       },
     });
+  })();
   </script>
 </polymer-element>