MAGETWO-41954: Eliminate code generatio in production mode

Author: Joan He

setup/src/Magento/Setup/Module/Di/App/Task/Operation/ApplicationCodeGenerator.php

@@ -36,6 +36,8 @@ class ApplicationCodeGenerator implements OperationInterface
 
     /**
      * @param ClassesScanner $classesScanner
+     * @param PhpScanner $phpScanner
+     * @param DirectoryScanner $directoryScanner
      * @param array $data
      */
     public function __construct(