Drupal 8: Moves anonymous user creation from User::getAnonymousUser() to storage handler.

d8-move-anon-user-creation-to-storage.patch

diff --git a/core/modules/user/src/Entity/User.php b/core/modules/user/src/Entity/User.php
index b8675866..6586cdb8 100644
--- a/core/modules/user/src/Entity/User.php
+++ b/core/modules/user/src/Entity/User.php
@@ -416,20 +416,9 @@ public function checkExistingPassword(UserInterface $account_unchanged) {
    */
   public static function getAnonymousUser() {
     if (!isset(static::$anonymousUser)) {
-
-      // @todo Use the entity factory once available, see
-      //   https://www.drupal.org/node/1867228.
-      $entity_manager = \Drupal::entityManager();
-      $entity_type = $entity_manager->getDefinition('user');
-      $class = $entity_type->getClass();
-
-      static::$anonymousUser = new $class([
-        'uid' => [LanguageInterface::LANGCODE_DEFAULT => 0],
-        'name' => [LanguageInterface::LANGCODE_DEFAULT => ''],
-        // Explicitly set the langcode to ensure that field definitions do not
-        // need to be fetched to figure out a default.
-        'langcode' => [LanguageInterface::LANGCODE_DEFAULT => LanguageInterface::LANGCODE_NOT_SPECIFIED],
-      ], $entity_type->id());
+      $entity_type_manager = \Drupal::entityTypeManager();
+      static::$anonymousUser = $entity_type_manager->getStorage('user')
+        ->getAnonymousUser();
     }
     return clone static::$anonymousUser;
   }
diff --git a/core/modules/user/src/UserStorage.php b/core/modules/user/src/UserStorage.php
index 7ca4f243..a5366b91 100644
--- a/core/modules/user/src/UserStorage.php
+++ b/core/modules/user/src/UserStorage.php
@@ -73,4 +73,18 @@ public function deleteRoleReferences(array $rids) {
     $this->resetCache();
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getAnonymousUser() {
+    $class = $this->entityClass;
+    return new $class([
+      'uid' => [LanguageInterface::LANGCODE_DEFAULT => 0],
+      'name' => [LanguageInterface::LANGCODE_DEFAULT => ''],
+      // Explicitly set the langcode to ensure that field definitions do not
+      // need to be fetched to figure out a default.
+      'langcode' => [LanguageInterface::LANGCODE_DEFAULT => LanguageInterface::LANGCODE_NOT_SPECIFIED]
+    ], $this->entityTypeId);
+  }
+
 }
diff --git a/core/modules/user/src/UserStorageInterface.php b/core/modules/user/src/UserStorageInterface.php
index 4cfd26b1..ea69c169 100644
--- a/core/modules/user/src/UserStorageInterface.php
+++ b/core/modules/user/src/UserStorageInterface.php
@@ -36,4 +36,12 @@ public function updateLastAccessTimestamp(AccountInterface $account, $timestamp)
    */
   public function deleteRoleReferences(array $rids);
 
+  /**
+   * Returns an anonymous user entity.
+   *
+   * @return \Drupal\user\UserInterface
+   *   An anonymous user entity.
+   */
+  public function getAnonymousUser();
+
 }