MAGETWO-60442: Add optional SerializerInterface dependency to child classes of \Magento\Framework\Config\Data

Adding SerializerInterface dependency in the constructor

Author: Igor Melnikov

app/code/Magento/Indexer/Model/Config/Data.php

@@ -6,6 +6,8 @@
 namespace Magento\Indexer\Model\Config;
 
 use Magento\Framework\Serialize\SerializerInterface;
+use Magento\Framework\Serialize\Serializer\Serialize;
+use Magento\Framework\App\ObjectManager;
 
 class Data extends \Magento\Framework\Config\Data
 {
@@ -29,6 +31,7 @@ public function __construct(
         SerializerInterface $serializer = null
     ) {
         $this->stateCollection = $stateCollection;
+        $serializer = $serializer ?: ObjectManager::getInstance()->get(Serialize::class);
 
         $isCacheExists = $cache->test($cacheId);
 

lib/internal/Magento/Framework/Config/Data.php

@@ -1,7 +1,5 @@
 <?php
 /**
- * Config data. Represents loaded and cached configuration data. Should be used to gain access to different types
- *
  * Copyright © 2016 Magento. All rights reserved.
  * See COPYING.txt for license details.
  */
@@ -11,6 +9,8 @@
 use Magento\Framework\App\ObjectManager;
 
 /**
+ * Represents loaded and cached configuration data, should be used to gain access to different types
+ *
  * @SuppressWarnings(PHPMD.NumberOfChildren)
  */
 class Data implements \Magento\Framework\Config\DataInterface