BBLING_PHASE) {
          slotChangeFired++;
        }
      });
      var innerSlotChangeFired = 0;
      ShadyDOM.wrap(innerSlot).addEventListener('slotchange', function(e) {
        if (e.eventPhase !== Event.BUBBLING_PHASE) {
          innerSlotChangeFired++;
        }
      });
      var innerInnerSlotChangeFired = 0;
      ShadyDOM.wrap(innerInnerSlot).addEventListener('slotchange', function(e) {
        if (e.eventPhase !== Event.BUBBLING_PHASE) {
          innerInnerSlotChangeFired++;
        }
    