anchor.diff:   * Called when one of the callback functions is done with all expected
    * calls.
    */
  -void _handleCallbackFunctionComplete() {
  +void _handleCallbackFunctionComplete(testNum) {
     // TODO (gram): we defer this to give the nextBatch recursive
     // stack a chance to unwind. This is a temporary hack but
     // really a bunch of code here needs to be fixed. We have a
  
positive.code: 
    _after() {
      if (_isDone()) {
        _handleCallbackFunctionComplete();
      }
    }
  
  
negative.code:  * TODO(gram) remove this when WebKit tests are working with new framework
   */
  void callbackDone() {
    _handleCallbackFunctionComplete(_currentTest);
  }
  
  /**
  