Creates an array of Views admin CSS for adding or attaching.
This returns an array of arrays. Each array represents a single file. The array format is:
public static function getAdminCSS() {
$module_path = drupal_get_path('module', 'views_ui');
$list = array();
$list[$module_path . '/css/views-admin.css'] = array();
$list[$module_path . '/css/views-admin.theme.css'] = array();
if (module_exists('contextual')) {
$list[$module_path . '/css/views-admin.contextual.css'] = array();
}
return $list;
}