Switch buildershandler over to using the json mirror.

Tools/TestResultServer/static-dashboards/flakiness_dashboard_unittests.js

 // Copyright (C) 2011 Google Inc. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 // copyright notice, this list of conditions and the following disclaimer
@@ skipping 30 matching lines @@
 
     for (var key in history.DEFAULT_CROSS_DASHBOARD_STATE_VALUES)
         historyInstance.crossDashboardState[key] = history.DEFAULT_CROSS_DASHBOARD_STATE_VALUES[key];
 
     LOAD_BUILDBOT_DATA({
         "no_upload_test_types": [
             "webkit_unit_tests"
         ],
         'masters': [{
             name: 'ChromiumWebkit',
-            url: 'dummyurl',
+            url_name: "chromium.webkit",
             tests: {
                 'layout-tests': {'builders': ['WebKit Linux', 'WebKit Linux (dbg)', 'WebKit Linux (deps)', 'WebKit Mac10.7', 'WebKit Win', 'WebKit Win (dbg)']},
                 'unit_tests': {'builders': ['Linux Tests']},
             },
             groups: ['@ToT Chromium', '@ToT Blink'],
         },{
             name :'ChromiumWin',
-            url: 'dummyurl2',
+            url_name: "chromium.win",
             tests: {
                 'ash_unittests': {'builders': ['XP Tests (1)', 'Win7 Tests (1)']},
                 'unit_tests': {'builders': ['Linux Tests']},
             },
             groups: ['@ToT Chromium'],
         }],
     });
 
    return historyInstance;
 }
@@ skipping 323 matching lines @@
     test.isFlaky = true;
     equal(shouldShowTest(test), false, 'hide flaky tests by default');
     historyInstance.dashboardSpecificState.showFlaky = true;
     equal(shouldShowTest(test), true, 'show flaky test');
     historyInstance.dashboardSpecificState.showFlaky = false;
 
     test = createResultsObjectForTest('foo/test.html', 'dummyBuilder');
     historyInstance.crossDashboardState.testType = 'not layout tests';
     equal(shouldShowTest(test), true, 'show all non layout tests');
 });