Index: src/wp-admin/includes/class-wp-upgrader.php
===================================================================
--- src/wp-admin/includes/class-wp-upgrader.php	(revision 38240)
+++ src/wp-admin/includes/class-wp-upgrader.php	(working copy)
@@ -903,5 +903,5 @@
 /** File_Upload_Upgrader class */
 require_once ABSPATH . 'wp-admin/includes/class-file-upload-upgrader.php';

-/** WP_Automatic_Upgrader class */
-require_once ABSPATH . 'wp-admin/includes/class-wp-automatic-upgrader.php';
+/** WP_Automatic_Updater class */
+require_once ABSPATH . 'wp-admin/includes/class-wp-automatic-updater.php';
Index: src/wp-admin/includes/update-core.php
===================================================================
--- src/wp-admin/includes/update-core.php	(revision 38240)
+++ src/wp-admin/includes/update-core.php	(working copy)
@@ -703,6 +703,8 @@
 'wp-includes/js/tinymce/plugins/wpfullscreen',
 // 4.5
 'wp-includes/theme-compat/comments-popup.php',
+// 4.6
+'wp-admin/includes/class-wp-automatic-upgrader.php', // Wrong file name, see #37628.
 );

 /**