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diff --git a/web/core/modules/field_ui/src/Form/FieldConfigDeleteForm.php b/web/core/modules/field_ui/src/Form/FieldConfigDeleteForm.php
new file mode 100644
index 000000000..67782311b
--- /dev/null
+++ b/web/core/modules/field_ui/src/Form/FieldConfigDeleteForm.php
@@ -0,0 +1,116 @@
+<?php
+
+namespace Drupal\field_ui\Form;
+
+use Drupal\Core\Config\Entity\ConfigEntityInterface;
+use Drupal\Core\Entity\EntityDeleteForm;
+use Drupal\Core\Entity\EntityManagerInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Render\Element;
+use Drupal\field_ui\FieldUI;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a form for removing a field from a bundle.
+ */
+class FieldConfigDeleteForm extends EntityDeleteForm {
+
+  /**
+   * The entity manager.
+   *
+   * @var \Drupal\Core\Entity\EntityManagerInterface
+   */
+  protected $entityManager;
+
+  /**
+   * Constructs a new FieldConfigDeleteForm object.
+   *
+   * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
+   *   The entity manager.
+   */
+  public function __construct(EntityManagerInterface $entity_manager) {
+    $this->entityManager = $entity_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('entity.manager')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    $form = parent::buildForm($form, $form_state);
+
+    // If we are adding the field storage as a dependency to delete, then that
+    // will list the field as a dependency. That is confusing, so remove it.
+    // Also remove the entity type and the whole entity deletions details
+    // element if nothing else is in there.
+    if (isset($form['entity_deletes']['field_config']['#items']) && isset($form['entity_deletes']['field_config']['#items'][$this->entity->id()])) {
+      unset($form['entity_deletes']['field_config']['#items'][$this->entity->id()]);
+      if (empty($form['entity_deletes']['field_config']['#items'])) {
+        unset($form['entity_deletes']['field_config']);
+        if (!Element::children($form['entity_deletes'])) {
+          $form['entity_deletes']['#access'] = FALSE;
+        }
+      }
+    }
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getConfigNamesToDelete(ConfigEntityInterface $entity) {
+    /** @var \Drupal\field\FieldStorageConfigInterface $field_storage */
+    $field_storage = $entity->getFieldStorageDefinition();
+    $config_names = [$entity->getConfigDependencyName()];
+
+    // If there is only one bundle left for this field storage, it will be
+    // deleted too, notify the user about dependencies.
+    if (count($field_storage->getBundles()) <= 1) {
+      $config_names[] = $field_storage->getConfigDependencyName();
+    }
+    return $config_names;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return FieldUI::getOverviewRouteInfo($this->entity->getTargetEntityTypeId(), $this->entity->getTargetBundle());
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $field_storage = $this->entity->getFieldStorageDefinition();
+    $bundles = $this->entityManager->getBundleInfo($this->entity->getTargetEntityTypeId());
+    $bundle_label = $bundles[$this->entity->getTargetBundle()]['label'];
+
+    if ($field_storage && !$field_storage->isLocked()) {
+      $this->entity->delete();
+      drupal_set_message($this->t('The field %field has been deleted from the %type content type.', ['%field' => $this->entity->label(), '%type' => $bundle_label]));
+    }
+    else {
+      drupal_set_message($this->t('There was a problem removing the %field from the %type content type.', ['%field' => $this->entity->label(), '%type' => $bundle_label]), 'error');
+    }
+
+    $form_state->setRedirectUrl($this->getCancelUrl());
+
+    // Fields are purged on cron. However field module prevents disabling modules
+    // when field types they provided are used in a field until it is fully
+    // purged. In the case that a field has minimal or no content, a single call
+    // to field_purge_batch() will remove it from the system. Call this with a
+    // low batch limit to avoid administrators having to wait for cron runs when
+    // removing fields that meet this criteria.
+    field_purge_batch(10);
+  }
+
+}