[Sheriff-o-matic] Refactor cards and get rid of ct-failure-cards

Tools/GardeningServer/model/ct-sheriff-failure-group-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="ct-builder-list.html">
 <link rel="import" href="ct-commit-list.html">
 
 <script>
 function CTSheriffFailureGroupData(failures, commitList) {
   this.failures = failures;
   this.commitList = commitList;
+  this.builderList = new CTBuilderList(failures);
   this.category = 'sheriff';
 };
 
 CTSheriffFailureGroupData.prototype.getAnnotations = function() {
   return this.failures.map(function(failure) {
     return failure.annotations();
   }).flatten();
 };
 
 CTSheriffFailureGroupData.prototype.dataToExamine = function() {
@@ skipping 10 matching lines @@
   var totalFailures = 0;
   for (var i = 0; i < this.failures.length; i++) {
     var resultNodes = this.failures[i].resultNodesByBuilder;
     for (var r in resultNodes) {
       totalFailures += resultNodes[r].failingBuildCount;
       if (totalFailures > 1)
         return false;
     }
   }
   return totalFailures == 1;
-}
+};
 </script>