Switch buildershandler over to using the json mirror.

Tools/TestResultServer/static-dashboards/load_failures_unittests.js

 // 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.
 
 module('loadfailures');
 
 test('htmlForBuilder', 1, function() {
     var html = loadfailures._htmlForBuilder('MockBuilder', 'MockTestType', {
-        'MockBuilder': new builders.BuilderMaster('MockMaster', 'http://mockbasepath', [], []),
+        'MockBuilder': new builders.BuilderMaster({name: 'MockMaster', url_name: 'mock.master', tests: [], groups: []}),
     });
 
     equal(html, '<tr class="builder">' +
         '<td>MockBuilder' +
         '<td><a href="http://test-results.appspot.com/testfile?testtype=MockTestType&builder=MockBuilder&master=MockMaster">uploaded results</a>' +
         '<td><a href="http://mockbasepath/builders/MockBuilder">buildbot</a>' +
     '</tr>');
 });
 
 test('html', 5, function() {
-    var mockBuilderMaster = new builders.BuilderMaster('MockMaster', 'http://mockbasepath', [], []);
+    var mockBuilderMaster = new builders.BuilderMaster({name: 'MockMaster', url_name: 'mock.master', tests: [], groups: []}),
     var failureData = {
         '@ToT Chromium': {
             failingBuilders: {
                 'MockTestType': ['MockFailingBuilder'],
             },
             staleBuilders: {
                 'MockTestType': ['MockStaleBuilder'],
             },
             testTypesWithNoSuccessfullLoads: [ 'MockTestType' ],
             builderToMaster: {
@@ skipping 19 matching lines @@
     equal(container.querySelectorAll('h1').length, 2, 'There should be two group headers');
     equal(container.querySelectorAll('.builder').length, 3, 'There should be 3 builders');
 
     var firstFailingBuilder = container.querySelector('table').querySelector('tr:nth-child(2) > td:nth-child(2)');
     equal(firstFailingBuilder.querySelector('b').innerHTML, 'No builders with up to date results.');
     equal(firstFailingBuilder.querySelectorAll('.builder').length, 1, 'There should be one failing builder in the first group.');
 
     var firstStaleBuilder = container.querySelector('table').querySelector('tr:nth-child(2) > td:nth-child(3)');
     equal(firstFailingBuilder.querySelectorAll('.builder').length, 1, 'There should be one stale builder in the first group.');
 });