10 files declare their use of ProcessDecorator

CKEditorPluginManager.php in drupal/core/modules/ckeditor/lib/Drupal/ckeditor/CKEditorPluginManager.php: Contains \Drupal\ckeditor\CKEditorPluginManager.
ConstraintManager.php in drupal/core/lib/Drupal/Core/Validation/ConstraintManager.php: Contains \Drupal\Core\Validation\ConstraintManager.
DefaultsTestPluginManager.php in drupal/core/modules/system/tests/modules/plugin_test/lib/Drupal/plugin_test/Plugin/DefaultsTestPluginManager.php: Contains Drupal\plugin_test\Plugin\DefaultsTestPluginManager.
EditorManager.php in drupal/core/modules/editor/lib/Drupal/editor/Plugin/EditorManager.php: Contains \Drupal\editor\Plugin\InPlaceEditorManager.
InPlaceEditorManager.php in drupal/core/modules/edit/lib/Drupal/edit/Plugin/InPlaceEditorManager.php: Contains \Drupal\edit\Plugin\InPlaceEditorManager.
LayoutManager.php in drupal/core/modules/layout/lib/Drupal/layout/Plugin/Type/LayoutManager.php: Definition of Drupal\layout\Plugin\Type\LayoutManager.
TipPluginManager.php in drupal/core/modules/tour/lib/Drupal/tour/TipPluginManager.php: Contains \Drupal\tour\TipPluginManager.
TypedDataManager.php in drupal/core/lib/Drupal/Core/TypedData/TypedDataManager.php: Contains \Drupal\Core\TypedData\TypedDataManager.
ViewsPluginManager.php in drupal/core/modules/views/lib/Drupal/views/Plugin/ViewsPluginManager.php: Contains \Drupal\views\Plugin\ViewsPluginManager.
WidgetPluginManager.php in drupal/core/modules/field/lib/Drupal/field/Plugin/Type/Widget/WidgetPluginManager.php: Definition of Drupal\field\Plugin\Type\Widget\WidgetPluginManager.