commit 50f161ecd370925892137ce347f4f406dad7b45c
Author: Jen Lampton <jen@jeneration.com>
Date:   Sun Jul 14 11:46:01 2013 -0700

    render wrapper for seven theme too

diff --git a/core/themes/seven/seven.theme b/core/themes/seven/seven.theme
index fe81791..9954d0f 100644
--- a/core/themes/seven/seven.theme
+++ b/core/themes/seven/seven.theme
@@ -144,8 +144,8 @@ function seven_tablesort_indicator($variables) {
 function seven_preprocess_install_page(&$variables) {
   drupal_add_js(drupal_get_path('theme', 'seven') . '/js/mobile.install.js');
   drupal_add_css(drupal_get_path('theme', 'seven') . '/install-page.css', array('group' => CSS_AGGREGATE_THEME));
-  $variables['styles'] = drupal_get_css();
-  $variables['scripts'] = drupal_get_js();
+  $variables['styles'] = new RenderWrapper('drupal_get_css');
+  $variables['scripts'] = new RenderWrapper('drupal_get_js');
 }
 
 /**