Update to Drupal 8.0.3. For more information, see https://www.drupal.org/drupal-8.0.3-release-notes

core/modules/image/src/ImageStyleStorage.php

@@ -0,0 +1,51 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\image\ImageStyleStorage.
+ */
+
+namespace Drupal\image;
+
+use Drupal\Core\Config\Entity\ConfigEntityStorage;
+
+/**
+ * Storage controller class for "image style" configuration entities.
+ */
+class ImageStyleStorage extends ConfigEntityStorage implements ImageStyleStorageInterface {
+
+  /**
+   * Image style replacement memory storage.
+   *
+   * This value is not stored in the backend. It's used during the deletion of
+   * an image style to save the replacement image style in the same request. The
+   * value is used later, when resolving dependencies.
+   *
+   * @var string[]
+   *
+   * @see \Drupal\image\Form\ImageStyleDeleteForm::submitForm()
+   */
+  protected $replacement = [];
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setReplacementId($name, $replacement) {
+    $this->replacement[$name] = $replacement;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getReplacementId($name) {
+    return isset($this->replacement[$name]) ? $this->replacement[$name] : NULL;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function clearReplacementId($name) {
+    unset($this->replacement[$name]);
+  }
+
+}