Convert moar Sheriff-o-Matic tests to Polymer.

Tools/GardeningServer/ui/test/ct-builder-grid-tests.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-grid.html">
 
 <link rel="import" href="../ct-builder.html">
+<link rel="import" href="../../model/ct-failure.html">
 
 <script>
 (function () {
 
 var assert = chai.assert;
 
 var kExampleFailures = [
   new CTFailure('layout_tests', "plugins/gesture-events-scrolled.html",
     {
       "WebKit Win7 (dbg)": {
@@ skipping 61 matching lines @@
       assert.deepEqual(builders[2].builder, new CTBuilder(
           'http://master-two', 'WebKit Mac10.7', '4'));
       assert.deepEqual(builders[3].builder, new CTBuilder(
           'http://master-one', 'WebKit Win7 (dbg)', '1'));
     });
   });
 });
 
 })()
 </script>