Move GardeningServer out of BuildSlaveSupport

Tools/GardeningServer/scripts/net.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 77 matching lines @@
         success: function(jsonp) {
             callback(base.parseJSONP(jsonp));
         },
         error: function() {
             callback({});
         },
     });
 };
 
 })();