diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
index bc8dfff..7db5d12 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
@@ -287,7 +287,7 @@ function get_elements() {
   /**
    * Return the class of the field.
    */
-  function element_classes($row_index = NULL) {
+ public function elementClasses($row_index = NULL) {
     $classes = explode(' ', $this->options['element_class']);
     foreach ($classes as &$class) {
       $class = $this->tokenize_value($class, $row_index);
diff --git a/core/modules/views/views.theme.inc b/core/modules/views/views.theme.inc
index 049815c..383534f 100644
--- a/core/modules/views/views.theme.inc
+++ b/core/modules/views/views.theme.inc
@@ -222,7 +222,7 @@ function template_preprocess_views_view_fields(&$vars) {
           $attributes['class'][] = 'field-content';
         }
 
-        if ($classes = $object->handler->element_classes($view->row_index)) {
+        if ($classes = $object->handler->elementClasses($view->row_index)) {
           $attributes['class'][] = $classes;
         }
         $attributes = new Attribute($attributes);
@@ -644,7 +644,7 @@ function template_preprocess_views_view_table(&$vars) {
       }
       $vars['field_classes'][$field][$num] = new Attribute($vars['field_classes'][$field][$num]);
 
-      if ($classes = $fields[$field]->element_classes($num)) {
+      if ($classes = $fields[$field]->elementClasses($num)) {
         $vars['field_classes'][$field][$num]['class'][] = $classes;
       }
       // Add responsive header classes.