[#3483996] Replace service proxies with service closures

Closes #3483996

core/lib/Drupal/Core/ProxyClass/Cron.php

-<?php
-// phpcs:ignoreFile
-
-/**
- * This file was generated via php core/scripts/generate-proxy-class.php 'Drupal\Core\Cron' "core/lib/Drupal/Core".
- */
-
-namespace Drupal\Core\ProxyClass {
-
-    /**
-     * Provides a proxy class for \Drupal\Core\Cron.
-     *
-     * @see \Drupal\Component\ProxyBuilder
-     */
-    class Cron implements \Drupal\Core\CronInterface
-    {
-
-        use \Drupal\Core\DependencyInjection\DependencySerializationTrait;
-
-        /**
-         * The id of the original proxied service.
-         *
-         * @var string
-         */
-        protected $drupalProxyOriginalServiceId;
-
-        /**
-         * The real proxied service, after it was lazy loaded.
-         *
-         * @var \Drupal\Core\Cron
-         */
-        protected $service;
-
-        /**
-         * The service container.
-         *
-         * @var \Symfony\Component\DependencyInjection\ContainerInterface
-         */
-        protected $container;
-
-        /**
-         * Constructs a ProxyClass Drupal proxy object.
-         *
-         * @param \Symfony\Component\DependencyInjection\ContainerInterface $container
-         *   The container.
-         * @param string $drupal_proxy_original_service_id
-         *   The service ID of the original service.
-         */
-        public function __construct(\Symfony\Component\DependencyInjection\ContainerInterface $container, $drupal_proxy_original_service_id)
-        {
-            $this->container = $container;
-            $this->drupalProxyOriginalServiceId = $drupal_proxy_original_service_id;
-        }
-
-        /**
-         * Lazy loads the real service from the container.
-         *
-         * @return object
-         *   Returns the constructed real service.
-         */
-        protected function lazyLoadItself()
-        {
-            if (!isset($this->service)) {
-                $this->service = $this->container->get($this->drupalProxyOriginalServiceId);
-            }
-
-            return $this->service;
-        }
-
-        /**
-         * {@inheritdoc}
-         */
-        public function run()
-        {
-            return $this->lazyLoadItself()->run();
-        }
-
-    }
-
-}