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

vendor/symfony/http-kernel/Controller/ControllerResolverInterface.php

@@ -0,0 +1,63 @@
+<?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\HttpKernel\Controller;
+
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * A ControllerResolverInterface implementation knows how to determine the
+ * controller to execute based on a Request object.
+ *
+ * It can also determine the arguments to pass to the Controller.
+ *
+ * A Controller can be any valid PHP callable.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @api
+ */
+interface ControllerResolverInterface
+{
+    /**
+     * Returns the Controller instance associated with a Request.
+     *
+     * As several resolvers can exist for a single application, a resolver must
+     * return false when it is not able to determine the controller.
+     *
+     * The resolver must only throw an exception when it should be able to load
+     * controller but cannot because of some errors made by the developer.
+     *
+     * @param Request $request A Request instance
+     *
+     * @return callable|false A PHP callable representing the Controller,
+     *                        or false if this resolver is not able to determine the controller
+     *
+     * @throws \LogicException If the controller can't be found
+     *
+     * @api
+     */
+    public function getController(Request $request);
+
+    /**
+     * Returns the arguments to pass to the controller.
+     *
+     * @param Request  $request    A Request instance
+     * @param callable $controller A PHP callable
+     *
+     * @return array An array of arguments to pass to the controller
+     *
+     * @throws \RuntimeException When value for argument given is not provided
+     *
+     * @api
+     */
+    public function getArguments(Request $request, $controller);
+}