Issue #2002472 by endorn: Rename Views method element_label_classes() to elementLabelClasses().

core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php

@@ -337,7 +337,7 @@ function tokenize_value($value, $row_index = NULL) {
   /**
    * Return the class of the field's label.
    */
-  function element_label_classes($row_index = NULL) {
+  public function elementLabelClasses($row_index = NULL) {
     $classes = explode(' ', $this->options['element_label_class']);
     foreach ($classes as &$class) {
       $class = $this->tokenize_value($class, $row_index);

core/modules/views/views.theme.inc

@@ -298,7 +298,7 @@ function template_preprocess_views_view_fields(&$vars) {
             $attributes['class'][] = 'views-label-' . $object->class;
           }
 
-          $element_label_class = $object->handler->element_label_classes($view->row_index);
+          $element_label_class = $object->handler->elementLabelClasses($view->row_index);
           if ($element_label_class) {
             $attributes['class'][] = $element_label_class;
           }
@@ -607,7 +607,7 @@ function template_preprocess_views_view_table(&$vars) {
         $vars['header_classes'][$field]['class'][] = 'views-field-' . $vars['fields'][$field];
       }
       $vars['header_classes'][$field] = new Attribute($vars['header_classes'][$field]);
-      $class = $fields[$field]->element_label_classes(0);
+      $class = $fields[$field]->elementLabelClasses(0);
       if ($class) {
         $vars['header_classes'][$field]['class'][] = $class;
       }