diff -u b/core/modules/config/tests/config_test/lib/Drupal/config_test/Plugin/Menu/LocalAction/AddConfigTestEntityLocalAction.php /dev/null
--- b/core/modules/config/tests/config_test/lib/Drupal/config_test/Plugin/Menu/LocalAction/AddConfigTestEntityLocalAction.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-
-/**
- * @file
- * Contains \Drupal\config_test\Plugin\Menu\AddConfigTestEntityLocalAction.
- */
-
-namespace Drupal\config_test\Plugin\Menu\LocalAction;
-
-use Drupal\Core\Annotation\Translation;
-use Drupal\Core\Menu\LocalActionDefault;
-use Drupal\Core\Annotation\Menu\LocalAction;
-
-/**
- * @LocalAction(
- *   id = "config_test_entity_add_local_action",
- *   route_name = "config_test.entity_add",
- *   title = @Translation("Add test configuration"),
- *   appears_on = {"config_test.list_page"}
- * )
- */
-class AddConfigTestEntityLocalAction extends LocalActionDefault {
-
-}
diff -u b/core/modules/filter/lib/Drupal/filter/Plugin/Menu/LocalAction/AddFilterFormatLocalAction.php /dev/null
--- b/core/modules/filter/lib/Drupal/filter/Plugin/Menu/LocalAction/AddFilterFormatLocalAction.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-
-/**
- * @file
- * Contains \Drupal\filter\Plugin\Menu\AddFilterFormatLocalAction.
- */
-
-namespace Drupal\filter\Plugin\Menu\LocalAction;
-
-use Drupal\Core\Annotation\Translation;
-use Drupal\Core\Menu\LocalActionDefault;
-use Drupal\Core\Annotation\Menu\LocalAction;
-
-/**
- * @LocalAction(
- *   id = "filter_format_add_local_action",
- *   route_name = "filter.format_add",
- *   title = @Translation("Add text format"),
- *   appears_on = {"filter.admin_overview"}
- * )
- */
-class AddFilterFormatLocalAction extends LocalActionDefault {
-
-}
diff -u b/core/modules/shortcut/lib/Drupal/shortcut/Plugin/Menu/LocalAction/AddShortcutSetLocalAction.php /dev/null
--- b/core/modules/shortcut/lib/Drupal/shortcut/Plugin/Menu/LocalAction/AddShortcutSetLocalAction.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-
-/**
- * @file
- * Contains \Drupal\shortcut\Plugin\Menu\AddShortcutSetLocalAction.
- */
-
-namespace Drupal\shortcut\Plugin\Menu\LocalAction;
-
-use Drupal\Core\Annotation\Translation;
-use Drupal\Core\Annotation\Menu\LocalAction;
-use Drupal\Core\Menu\LocalActionDefault;
-
-/**
- * @LocalAction(
- *   id = "shortcut_set_add_local_action",
- *   route_name = "shortcut.set_add",
- *   title = @Translation("Add shortcut set"),
- *   appears_on = {"shortcut.set_admin"}
- * )
- */
-class AddShortcutSetLocalAction extends LocalActionDefault {
-
-}
only in patch2:
unchanged:
--- a/core/modules/system/lib/Drupal/system/Tests/Menu/LocalActionTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Menu/LocalActionTest.php
@@ -39,8 +39,8 @@ public function testLocalAction() {
     $this->assertLocalAction(array(
       'menu-test-local-action/dynamic-title' => 'My dynamic-title action',
       'menu-test-local-action/hook_menu' => 'My hook_menu action',
-      'menu-test-local-action/routing' => 'My routing action',
       'menu-test-local-action/routing' => 'My YAML discovery action',
+      'menu-test-local-action/routing2' => 'Title override',
     ));
   }
 
only in patch2:
unchanged:
--- /dev/null
+++ b/core/modules/system/tests/modules/menu_test/lib/Drupal/menu_test/Plugin/Menu/LocalAction/TestLocalAction.php
@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\menu_test\Plugin\Menu\LocalAction\TestLocalAction.
+ */
+
+namespace Drupal\menu_test\Plugin\Menu\LocalAction;
+
+use Drupal\Core\Menu\LocalActionDefault;
+
+/**
+ * Defines a test local action plugin class.
+ */
+class TestLocalAction extends LocalActionDefault {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getTitle() {
+    return 'Title override';
+  }
+
+} 
only in patch2:
unchanged:
--- a/core/modules/system/tests/modules/menu_test/menu_test.local_actions.yml
+++ b/core/modules/system/tests/modules/menu_test/menu_test.local_actions.yml
@@ -3,3 +3,11 @@ menu_test_local_action4:
   title: 'My YAML discovery action'
   appears_on:
     - menu_test.local_action1
+
+menu_test.local_action5:
+  route_name: menu_test.local_action5
+  class: '\Drupal\menu_test\Plugin\Menu\LocalAction\TestLocalAction'
+  weight: 10
+  appears_on:
+    - menu_test.local_action1
+
only in patch2:
unchanged:
--- a/core/modules/system/tests/modules/menu_test/menu_test.routing.yml
+++ b/core/modules/system/tests/modules/menu_test/menu_test.routing.yml
@@ -61,6 +61,13 @@ menu_test.local_action4:
   requirements:
     _access: 'TRUE'
 
+menu_test.local_action5:
+  path: '/menu-test-local-action/routing2'
+  defaults:
+    _content: '\Drupal\menu_test\TestControllers::test2'
+  requirements:
+    _access: 'TRUE'
+
 menu_test.local_task_test_tasks:
   path: '/menu-local-task-test/tasks'
   defaults: