Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/validator/Context/ExecutionContextFactoryInterface.php

@@ -0,0 +1,38 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Validator\Context;
+
+use Symfony\Component\Validator\Validator\ValidatorInterface;
+
+/**
+ * Creates instances of {@link ExecutionContextInterface}.
+ *
+ * You can use a custom factory if you want to customize the execution context
+ * that is passed through the validation run.
+ *
+ * @since  2.5
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+interface ExecutionContextFactoryInterface
+{
+    /**
+     * Creates a new execution context.
+     *
+     * @param ValidatorInterface $validator The validator
+     * @param mixed              $root      The root value of the validated
+     *                                      object graph
+     *
+     * @return ExecutionContextInterface The new execution context
+     */
+    public function createContext(ValidatorInterface $validator, $root);
+}