diff --git a/core/modules/block/custom_block/lib/Drupal/custom_block/CustomBlockAccessController.php b/core/modules/block/custom_block/lib/Drupal/custom_block/CustomBlockAccessController.php
index 01421f2..014d54f 100644
--- a/core/modules/block/custom_block/lib/Drupal/custom_block/CustomBlockAccessController.php
+++ b/core/modules/block/custom_block/lib/Drupal/custom_block/CustomBlockAccessController.php
@@ -9,12 +9,12 @@
 
 use Drupal\Core\Entity\EntityInterface;
 use Drupal\user\Plugin\Core\Entity\User;
-use Drupal\Core\Entity\EntityAccessControllerInterface;
+use Drupal\Core\Entity\EntityAccessController;
 
 /**
  * Defines the access controller for the custom block entity type.
  */
-class CustomBlockAccessController implements EntityAccessControllerInterface {
+class CustomBlockAccessController extends EntityAccessController {
 
   /**
    * Implements EntityAccessControllerInterface::viewAccess().
diff --git a/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestAccessController.php b/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestAccessController.php
index 2ab6699..b9e9361 100644
--- a/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestAccessController.php
+++ b/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestAccessController.php
@@ -8,13 +8,13 @@
 namespace Drupal\entity_test;
 
 use Drupal\Core\Entity\EntityInterface;
-use Drupal\Core\Entity\EntityAccessControllerInterface;
+use Drupal\Core\Entity\EntityAccessController;
 use Drupal\user\Plugin\Core\Entity\User;
 
 /**
  * Defines the access controller for the test entity type.
  */
-class EntityTestAccessController implements EntityAccessControllerInterface {
+class EntityTestAccessController extends EntityAccessController {
 
   /**
    * Implements \Drupal\Core\Entity\EntityAccessControllerInterface::viewAccess().
diff --git a/core/modules/user/lib/Drupal/user/UserAccessController.php b/core/modules/user/lib/Drupal/user/UserAccessController.php
index f0202d0..13b8c6b 100644
--- a/core/modules/user/lib/Drupal/user/UserAccessController.php
+++ b/core/modules/user/lib/Drupal/user/UserAccessController.php
@@ -8,13 +8,13 @@
 namespace Drupal\user;
 
 use Drupal\Core\Entity\EntityInterface;
-use Drupal\Core\Entity\EntityAccessControllerInterface;
+use Drupal\Core\Entity\EntityAccessController;
 use Drupal\user\Plugin\Core\Entity\User;
 
 /**
  * Defines the access controller for the user entity type.
  */
-class UserAccessController implements EntityAccessControllerInterface {
+class UserAccessController extends EntityAccessController {
 
   /**
    * Implements EntityAccessControllerInterface::viewAccess().