Move GardeningServer out of BuildSlaveSupport

Tools/GardeningServer/scripts/FlakyLayoutTestDetector_unittests.js

 /*
  * Copyright (C) 2011 Apple 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 148 matching lines @@
     for (var i = 0; i < 10; ++i)
         detector.incorporateTestResults('build', {}, true);
     detector.incorporateTestResults('build', { a: 'fail' }, false);
     detector.incorporateTestResults('build', {}, false);
     detector.incorporateTestResults('build', { a: 'fail' }, false);
     detector.incorporateTestResults('build', {}, false);
     deepEqual(detector.possiblyFlakyTests, ['a']);
 });
 
 })();