trooper-o-matic: Add patch attempt timeline view to CQ graphs

appengine/trooper_o_matic/model/cqstats-graph-data.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="../lib/log.html">
 <link rel="import" href="../lib/net.html">
 <link rel="import" href="../lib/cqstats-util.html">
 
@@ skipping 45 matching lines @@
 
 CQStatsGraphData.prototype.rowItems = function(index) {
   var name = this._name;
   return this._cqStatsListPromise.then(function(cqStatsList) {
     var cqStats = cqStatsList[index];
     return cqStatsUtil.loadStatItems(name, cqStats.key).then(function(items) {
       // Convert seconds to minutes.
       items.forEach(function(item) { item[0] /= 60; });
       return {
         items: items,
-        begin: new Date(cqStats.begin * 1000),
-        end: new Date(cqStats.end * 1000),
+        begin: cqStats.begin,
+        end: cqStats.end,
       };
     });
   })
 };
 </script>