Add last update time to Sheriff-O-Matic.

Tools/GardeningServer/ui/ct-failure-analyzer.html

Index: Tools/GardeningServer/ui/ct-failure-analyzer.html
diff --git a/Tools/GardeningServer/ui/ct-failure-analyzer.html b/Tools/GardeningServer/ui/ct-failure-analyzer.html
index 93d6980eb6659a7993c1c3781ba869c6cebc3269..3a0a3b11941ada22d62a7f061437893b236ac967 100644
--- a/Tools/GardeningServer/ui/ct-failure-analyzer.html
+++ b/Tools/GardeningServer/ui/ct-failure-analyzer.html
@@ -8,13 +8,14 @@ found in the LICENSE file.
 <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: {
@@ -70,6 +71,7 @@ found in the LICENSE file.
             // 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));