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

vendor/symfony/http-kernel/Event/GetResponseForControllerResultEvent.php

@@ -0,0 +1,67 @@
+<?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\Event;
+
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Allows to create a response for the return value of a controller.
+ *
+ * Call setResponse() to set the response that will be returned for the
+ * current request. The propagation of this event is stopped as soon as a
+ * response is set.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ *
+ * @api
+ */
+class GetResponseForControllerResultEvent extends GetResponseEvent
+{
+    /**
+     * The return value of the controller.
+     *
+     * @var mixed
+     */
+    private $controllerResult;
+
+    public function __construct(HttpKernelInterface $kernel, Request $request, $requestType, $controllerResult)
+    {
+        parent::__construct($kernel, $request, $requestType);
+
+        $this->controllerResult = $controllerResult;
+    }
+
+    /**
+     * Returns the return value of the controller.
+     *
+     * @return mixed The controller return value
+     *
+     * @api
+     */
+    public function getControllerResult()
+    {
+        return $this->controllerResult;
+    }
+
+    /**
+     * Assigns the return value of the controller.
+     *
+     * @param mixed $controllerResult The controller return value
+     *
+     * @api
+     */
+    public function setControllerResult($controllerResult)
+    {
+        $this->controllerResult = $controllerResult;
+    }
+}