bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
                                        bool check_fullscreen) const {
  bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();

  unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;

  if (is_type_tabbed())
    features |= FEATURE_BOOKMARKBAR;

  if (!hide_ui_for_fullscreen) {
    if (!is_type_tabbed())
      features |= FEATURE_TITLEBAR;

    if (is_type_tabbed())
      features |= FEATURE_TABSTRIP;

    if (is_type_tabbed())
      features |= FEATURE_TOOLBAR;

    if (SupportsLocationBar())
      features |= FEATURE_LOCATIONBAR;
  }
  return !!(features & feature);
}

Unknown