Add last update time to Sheriff-O-Matic.

Tools/GardeningServer/ui/ct-failure-analyzer.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 href="../model/ct-builder-revisions.html" rel="import">
 
 <link rel="import" href="../model/ct-failure.html">
 <link rel="import" href="../model/ct-failure-group.html">
 
-<polymer-element name="ct-failure-analyzer" attributes="failures builderLatestRevisions">
+<polymer-element name="ct-failure-analyzer" attributes="failures builderLatestRevisions lastUpdateDate">
   <script>
     // FIXME: Don't use a polymer component for this. Instead use a Failures model
     // object that knows how to do the XHR and process the data appropriately.
     Polymer({
       builderLatestRevisions: null,
       failures: null,
+      lastUpdateDate: null,
 
       // FIXME: Get this from https://chromium.googlesource.com/chromium/tools/build/+/master/scripts/slave/gatekeeper_trees.json?format=text.
       _trees: {
         blink: [
           "https://build.chromium.org/p/chromium.webkit",
         ],
         chromium: [
           "https://build.chromium.org/p/chromium",
           "https://build.chromium.org/p/chromium.chrome",
           "https://build.chromium.org/p/chromium.chromiumos",
@@ skipping 35 matching lines @@
         return 0;
       },
 
       update: function() {
         var annotationPromise = CTFailureGroup.fetchAnnotations();
         net.json('http://auto-sheriff.appspot.com/data').then(function(data) {
           annotationPromise.then(function(annotations) {
             // FIXME: Don't special-case the blink master.
             this.builderLatestRevisions = new CTBuilderRevisions(data.latest_revisions['chromium.webkit']);
             this.failures = {};
+            this.lastUpdateDate = new Date(data.date * 1000);
             data.range_groups.forEach(function(group) {
               this._processFailuresForGroup(group, data.alerts, annotations);
             }.bind(this));
             Object.keys(this.failures, function (tree, failuresByTree) {
               this.failures[tree].sort(this._failureListComparator.bind(this, tree));
             }.bind(this));
           }.bind(this));
         }.bind(this));
       },
 
@@ skipping 72 matching lines @@
           if (!this.failures[tree])
             this.failures[tree] = [];
           // FIXME: Need a better identifier for a failure group;
           var key = group.sort_key;
           this.failures[tree].push(new CTFailureGroup(key, failures, annotations[key]));
         }.bind(this));
       },
     });
   </script>
 </polymer-element>