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

vendor/symfony/routing/Matcher/Dumper/MatcherDumper.php

@@ -0,0 +1,45 @@
+<?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\Routing\Matcher\Dumper;
+
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * MatcherDumper is the abstract class for all built-in matcher dumpers.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+abstract class MatcherDumper implements MatcherDumperInterface
+{
+    /**
+     * @var RouteCollection
+     */
+    private $routes;
+
+    /**
+     * Constructor.
+     *
+     * @param RouteCollection $routes The RouteCollection to dump
+     */
+    public function __construct(RouteCollection $routes)
+    {
+        $this->routes = $routes;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getRoutes()
+    {
+        return $this->routes;
+    }
+}