/** Adds the specified list of sponsored results to the display. */
  @Override
  public void addSponsoredResults(List<SponsoredResult> sponsoredResults) {
    for (SponsoredResult result : sponsoredResults) {
      sponsoredResultsPanel.addEntry(result);
    }

    if (!sponsoredResultsPanel.isVisible()) {
      sponsoredResultsPanel.setVisible(true);
      syncColumnHeader();
    }
  }