diff --git a/core/modules/user/lib/Drupal/user/Access/RoleDeleteAccessCheck.php b/core/modules/user/lib/Drupal/user/Access/RoleDeleteAccessCheck.php
index 1efc872..9e5dd22 100644
--- a/core/modules/user/lib/Drupal/user/Access/RoleDeleteAccessCheck.php
+++ b/core/modules/user/lib/Drupal/user/Access/RoleDeleteAccessCheck.php
@@ -17,14 +17,14 @@
 class RoleDeleteAccessCheck implements AccessCheckInterface {
 
   /**
-   * Implements AccessCheckInterface::applies().
+   * {@inheritdoc}
    */
   public function applies(Route $route) {
     return array_key_exists('_access_role_delete', $route->getRequirements());
   }
 
   /**
-   * Implements AccessCheckInterface::access().
+   * {@inheritdoc}
    */
   public function access(Route $route, Request $request) {
     if ($user_role = $request->attributes->get('user_role')) {
diff --git a/core/modules/user/lib/Drupal/user/Form/UserRoleDelete.php b/core/modules/user/lib/Drupal/user/Form/UserRoleDelete.php
index 969d89f..083cbe5 100644
--- a/core/modules/user/lib/Drupal/user/Form/UserRoleDelete.php
+++ b/core/modules/user/lib/Drupal/user/Form/UserRoleDelete.php
@@ -23,35 +23,35 @@ class UserRoleDelete extends ConfirmFormBase {
   protected $user_role;
 
   /**
-   * Implements \Drupal\Core\Form\FormInterface::getFormID().
+   * {@inheritdoc}
    */
   public function getFormID() {
     return 'user_role_delete_form';
   }
 
   /**
-   * Implements \Drupal\Core\Form\ConfirmFormBase::getQuestion().
+   * {@inheritdoc}
    */
   protected function getQuestion() {
     return t('Are you sure you want to delete the role %name?', array('%name' => $this->user_role->label()));
   }
 
   /**
-   * Implements \Drupal\Core\Form\ConfirmFormBase::getCancelPath().
+   * {@inheritdoc}
    */
   protected function getCancelPath() {
     return 'admin/people/roles';
   }
 
   /**
-   * Implements \Drupal\Core\Form\ConfirmFormBase::getConfirmText().
+   * {@inheritdoc}
    */
   protected function getConfirmText() {
     return t('Delete');
   }
 
   /**
-   * Implements \Drupal\Core\Form\FormInterface::buildForm().
+   * {@inheritdoc}
    */
   public function buildForm(array $form, array &$form_state, Role $user_role = NULL) {
     $this->user_role = $user_role;
@@ -59,7 +59,7 @@ public function buildForm(array $form, array &$form_state, Role $user_role = NUL
   }
 
   /**
-   * Implements \Drupal\Core\Form\FormInterface::submitForm().
+   * {@inheritdoc}
    */
   public function submitForm(array &$form, array &$form_state) {
     $this->user_role->delete();
diff --git a/core/modules/user/lib/Drupal/user/RoleAccessController.php b/core/modules/user/lib/Drupal/user/RoleAccessController.php
index b09fe6c..a4dcdb7 100644
--- a/core/modules/user/lib/Drupal/user/RoleAccessController.php
+++ b/core/modules/user/lib/Drupal/user/RoleAccessController.php
@@ -18,7 +18,7 @@
 class RoleAccessController extends EntityAccessController {
 
   /**
-   * Overrides \Drupal\Core\Entity\EntityAccessController::deleteAccess().
+   * {@inheritdoc}
    */
   public function deleteAccess(EntityInterface $entity, $langcode = LANGUAGE_DEFAULT, User $account = NULL) {
     // Prevent the system-defined roles from being removed.
diff --git a/core/modules/user/user.admin.inc b/core/modules/user/user.admin.inc
index 3403190..b7cd62d 100644
--- a/core/modules/user/user.admin.inc
+++ b/core/modules/user/user.admin.inc
@@ -5,6 +5,8 @@
  * Admin page callback file for the user module.
  */
 
+use Drupal\user\Form\UserMultipleCancelConfirm;
+
 /**
  * Page callback: Generates the appropriate user administration form.
  *
@@ -31,7 +33,8 @@ function user_admin($callback_arg = '') {
       break;
     default:
       if (!empty($_POST['accounts']) && isset($_POST['operation']) && ($_POST['operation'] == 'cancel')) {
-        $build['user_multiple_cancel_confirm'] = drupal_get_form('user_multiple_cancel_confirm');
+        $confirm_form = new UserMultipleCancelConfirm();
+        $build['user_multiple_cancel_confirm'] = drupal_get_form($confirm_form);
       }
       else {
         $build['user_filter_form'] = drupal_get_form('user_filter_form');
diff --git a/core/modules/user/user.module b/core/modules/user/user.module
index 4f308ca..21cced8 100644
--- a/core/modules/user/user.module
+++ b/core/modules/user/user.module
@@ -1027,11 +1027,7 @@ function user_menu() {
   );
   $items['user/%user/cancel'] = array(
     'title' => 'Cancel account',
-    'page callback' => 'drupal_get_form',
-    'page arguments' => array('user_cancel_confirm_form', 1),
-    'access callback' => 'entity_page_access',
-    'access arguments' => array(1, 'delete'),
-    'file' => 'user.pages.inc',
+    'route_name' => 'user_cancel_confirm',
   );
   $items['user/%user/cancel/confirm/%/%'] = array(
     'title' => 'Confirm account cancellation',
@@ -2105,98 +2101,6 @@ function user_multiple_role_edit($accounts, $operation, $rid) {
   }
 }
 
-function user_multiple_cancel_confirm($form, &$form_state) {
-  $edit = $form_state['input'];
-
-  $form['accounts'] = array('#prefix' => '<ul>', '#suffix' => '</ul>', '#tree' => TRUE);
-  $accounts = user_load_multiple(array_keys(array_filter($edit['accounts'])));
-  foreach ($accounts as $uid => $account) {
-    // Prevent user 1 from being canceled.
-    if ($uid <= 1) {
-      continue;
-    }
-    $form['accounts'][$uid] = array(
-      '#type' => 'hidden',
-      '#value' => $uid,
-      '#prefix' => '<li>',
-      '#suffix' => check_plain($account->name) . "</li>\n",
-    );
-  }
-
-  // Output a notice that user 1 cannot be canceled.
-  if (isset($accounts[1])) {
-    $redirect = (count($accounts) == 1);
-    $message = t('The user account %name cannot be cancelled.', array('%name' => $accounts[1]->name));
-    drupal_set_message($message, $redirect ? 'error' : 'warning');
-    // If only user 1 was selected, redirect to the overview.
-    if ($redirect) {
-      drupal_goto('admin/people');
-    }
-  }
-
-  $form['operation'] = array('#type' => 'hidden', '#value' => 'cancel');
-
-  form_load_include($form_state, 'inc', 'user', 'user.pages');
-  $form['user_cancel_method'] = array(
-    '#type' => 'radios',
-    '#title' => t('When cancelling these accounts'),
-  );
-  $form['user_cancel_method'] += user_cancel_methods();
-
-  // Allow to send the account cancellation confirmation mail.
-  $form['user_cancel_confirm'] = array(
-    '#type' => 'checkbox',
-    '#title' => t('Require e-mail confirmation to cancel account.'),
-    '#default_value' => FALSE,
-    '#description' => t('When enabled, the user must confirm the account cancellation via e-mail.'),
-  );
-  // Also allow to send account canceled notification mail, if enabled.
-  $form['user_cancel_notify'] = array(
-    '#type' => 'checkbox',
-    '#title' => t('Notify user when account is canceled.'),
-    '#default_value' => FALSE,
-    '#access' => config('user.settings')->get('notify.status_canceled'),
-    '#description' => t('When enabled, the user will receive an e-mail notification after the account has been cancelled.'),
-  );
-
-  return confirm_form($form,
-                      t('Are you sure you want to cancel these user accounts?'),
-                      'admin/people', t('This action cannot be undone.'),
-                      t('Cancel accounts'), t('Cancel'));
-}
-
-/**
- * Submit handler for mass-account cancellation form.
- *
- * @see user_multiple_cancel_confirm()
- * @see user_cancel_confirm_form_submit()
- */
-function user_multiple_cancel_confirm_submit($form, &$form_state) {
-  global $user;
-
-  if ($form_state['values']['confirm']) {
-    foreach ($form_state['values']['accounts'] as $uid => $value) {
-      // Prevent programmatic form submissions from cancelling user 1.
-      if ($uid <= 1) {
-        continue;
-      }
-      // Prevent user administrators from deleting themselves without confirmation.
-      if ($uid == $user->uid) {
-        $admin_form_state = $form_state;
-        unset($admin_form_state['values']['user_cancel_confirm']);
-        // The $user global is not a complete user entity, so load the full
-        // entity.
-        $admin_form_state['values']['_account'] = user_load($user->uid);
-        user_cancel_confirm_form_submit(array(), $admin_form_state);
-      }
-      else {
-        user_cancel($form_state['values'], $uid, $form_state['values']['user_cancel_method']);
-      }
-    }
-  }
-  $form_state['redirect'] = 'admin/people';
-}
-
 /**
  * List user administration filters that can be applied.
  */
diff --git a/core/modules/user/user.pages.inc b/core/modules/user/user.pages.inc
index 140b767..b4db2d8 100644
--- a/core/modules/user/user.pages.inc
+++ b/core/modules/user/user.pages.inc
@@ -209,107 +209,6 @@ function user_edit_cancel_submit($form, &$form_state) {
 }
 
 /**
- * Form builder; confirm form for cancelling user account.
- *
- * @ingroup forms
- * @see user_edit_cancel_submit()
- */
-function user_cancel_confirm_form($form, &$form_state, $account) {
-  global $user;
-
-  $form['_account'] = array('#type' => 'value', '#value' => $account);
-
-  // Display account cancellation method selection, if allowed.
-  $admin_access = user_access('administer users');
-  $can_select_method = $admin_access || user_access('select account cancellation method');
-  $form['user_cancel_method'] = array(
-    '#type' => 'radios',
-    '#title' => ($account->uid == $user->uid ? t('When cancelling your account') : t('When cancelling the account')),
-    '#access' => $can_select_method,
-  );
-  $form['user_cancel_method'] += user_cancel_methods();
-
-  // Allow user administrators to skip the account cancellation confirmation
-  // mail (by default), as long as they do not attempt to cancel their own
-  // account.
-  $override_access = $admin_access && ($account->uid != $user->uid);
-  $form['user_cancel_confirm'] = array(
-    '#type' => 'checkbox',
-    '#title' => t('Require e-mail confirmation to cancel account.'),
-    '#default_value' => ($override_access ? FALSE : TRUE),
-    '#access' => $override_access,
-    '#description' => t('When enabled, the user must confirm the account cancellation via e-mail.'),
-  );
-  // Also allow to send account canceled notification mail, if enabled.
-  $default_notify = config('user.settings')->get('notify.status_canceled');
-  $form['user_cancel_notify'] = array(
-    '#type' => 'checkbox',
-    '#title' => t('Notify user when account is canceled.'),
-    '#default_value' => ($override_access ? FALSE : $default_notify),
-    '#access' => $override_access && $default_notify,
-    '#description' => t('When enabled, the user will receive an e-mail notification after the account has been cancelled.'),
-  );
-
-  // Prepare confirmation form page title and description.
-  if ($account->uid == $user->uid) {
-    $question = t('Are you sure you want to cancel your account?');
-  }
-  else {
-    $question = t('Are you sure you want to cancel the account %name?', array('%name' => $account->name));
-  }
-  $default_method = config('user.settings')->get('cancel_method');
-  $description = NULL;
-  if ($can_select_method) {
-    $description = t('Select the method to cancel the account above.');
-  }
-  // Options supplied via user_cancel_methods() can have a custom
-  // #confirm_description property for the confirmation form description.
-  elseif (isset($form['user_cancel_method'][$default_method]['#confirm_description'])) {
-    $description = $form['user_cancel_method'][$default_method]['#confirm_description'];
-  }
-
-  // Always provide entity id in the same form key as in the entity edit form.
-  $form['uid'] = array('#type' => 'value', '#value' => $account->uid);
-  return confirm_form($form,
-    $question,
-    'user/' . $account->uid,
-    $description . ' ' . t('This action cannot be undone.'),
-    t('Cancel account'), t('Cancel'));
-}
-
-/**
- * Submit handler for the account cancellation confirm form.
- *
- * @see user_cancel_confirm_form()
- * @see user_multiple_cancel_confirm_submit()
- */
-function user_cancel_confirm_form_submit($form, &$form_state) {
-  global $user;
-  $account = $form_state['values']['_account'];
-
-  // Cancel account immediately, if the current user has administrative
-  // privileges, no confirmation mail shall be sent, and the user does not
-  // attempt to cancel the own account.
-  if (user_access('administer users') && empty($form_state['values']['user_cancel_confirm']) && $account->uid != $user->uid) {
-    user_cancel($form_state['values'], $account->uid, $form_state['values']['user_cancel_method']);
-
-    $form_state['redirect'] = 'admin/people';
-  }
-  else {
-    // Store cancelling method and whether to notify the user in $account for
-    // user_cancel_confirm().
-    $account->user_cancel_method = $form_state['values']['user_cancel_method'];
-    $account->user_cancel_notify = $form_state['values']['user_cancel_notify'];
-    $account->save();
-    _user_mail_notify('cancel_confirm', $account);
-    drupal_set_message(t('A confirmation request to cancel your account has been sent to your e-mail address.'));
-    watchdog('user', 'Sent account cancellation request to %name %email.', array('%name' => $account->name, '%email' => '<' . $account->mail . '>'), WATCHDOG_NOTICE);
-
-    $form_state['redirect'] = "user/$account->uid";
-  }
-}
-
-/**
  * Helper function to return available account cancellation methods.
  *
  * See documentation of hook_user_cancel_methods_alter().
@@ -319,8 +218,6 @@ function user_cancel_confirm_form_submit($form, &$form_state) {
  *
  * @see hook_user_cancel_methods_alter()
  * @see user_admin_settings()
- * @see user_cancel_confirm_form()
- * @see user_multiple_cancel_confirm()
  */
 function user_cancel_methods() {
   $anonymous_name = config('user.settings')->get('anonymous');
diff --git a/core/modules/user/user.routing.yml b/core/modules/user/user.routing.yml
index b344244..43d65ab 100644
--- a/core/modules/user/user.routing.yml
+++ b/core/modules/user/user.routing.yml
@@ -32,3 +32,10 @@ user_role_delete:
     _form: '\Drupal\user\Form\UserRoleDelete'
   requirements:
     _access_role_delete: 'TRUE'
+
+user_cancel_confirm:
+  pattern: '/user/{user}/cancel'
+  defaults:
+    _form: '\Drupal\user\Form\UserCancelConfirm'
+  requirements:
+    _access_user_delete: 'TRUE'
diff --git a/core/modules/user/user.services.yml b/core/modules/user/user.services.yml
index 77a91f4..4ab2d5f 100644
--- a/core/modules/user/user.services.yml
+++ b/core/modules/user/user.services.yml
@@ -11,6 +11,10 @@ services:
     class: Drupal\user\Access\RoleDeleteAccessCheck
     tags:
       - { name: access_check }
+  access_check.user.delete:
+    class: Drupal\user\Access\UserDeleteAccessCheck
+    tags:
+      - { name: access_check }
   user.data:
     class: Drupal\user\UserData
     arguments: ['@database']