[test] Move test262-es6 into test262.

test/test262/harness-adapt.js

 // Copyright 2011 the V8 project authors. 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 in the documentation and/or other materials provided
@@ skipping 62 matching lines @@
             retVal,
             error);
       }
     }
   }
 
   return {
     registerTest: registerTest
   }
 })();
+
+function $DONE(arg){
+    if (arg) {
+        print('FAILED! Error: ' + arg);
+        quit(1);
+    }
+
+    quit(0);
+};