Green the garden-o-matic unittests.

Tools/GardeningServer/scripts/checkout_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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 104 matching lines @@
                      "WebKit Linux": ["png"],
                      "WebKit Mac10.6": ["png","txt"]},
                  "fast/test.html": {
                      "Webkit Win7": ["txt","png"]
                  }})]
         ]);
         start();
     });
 });
 
-asyncTest("rebaseline-debug-bot", 3, function() {
+asyncTest("rebaseline-debug-bot", 4, function() {
     var simulator = new NetworkSimulator();
     simulator.post = function(url, body)
     {
         return Promise.resolve();
     };
     simulator.ajax = function(options)
     {
         return Promise.resolve();
     };
 
     simulator.runTest(function() {
         checkout.rebaseline([{
             'builderName': 'WebKit Linux (dbg)',
             'testName': 'another/test.svg',
             'failureTypeList': ['IMAGE'],
         }], function(failureInfo) {
-            ok(false);
+            ok(true);

[ojan, 2014/06/15 00:43:44]

checkout.rebaseline changed to all the processCallback unconditionally, so this
gets called now.

         }, function(failureInfo) {
             ok(true);
         }).then(function() {
             ok(true);
         }, function() {
             ok(false);
         });
     }).then(start);
 });
 
 })();