Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/modules/contextual/contextual.views.inc

@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * @file
+ * Provide views data for contextual.module.
+ */
+
+/**
+ * Implements hook_views_data_alter().
+ */
+function contextual_views_data_alter(&$data) {
+  $data['views']['contextual_links'] = array(
+    'title' => t('Contextual Links'),
+    'help' => t('Display fields in a contextual links menu.'),
+    'field' => array(
+      'id' => 'contextual_links',
+    ),
+  );
+}