diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php
index 5c69d52..936fbcd 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php
@@ -1752,73 +1752,6 @@ public function buildOptionsForm(&$form, &$form_state) {
       case 'analyze-theme':
         $this->getThemeInformation();
         $form['#title'] .= t('Theming information');
-        if ($theme = \Drupal::request()->request->get('theme')) {
-          $this->theme = $theme;
-        }
-        elseif (empty($this->theme)) {
-          $this->theme = \Drupal::config('system.theme')->get('default');
-        }
-
-        if (isset($GLOBALS['theme']) && $GLOBALS['theme'] == $this->theme) {
-          $this->theme_registry = theme_get_registry();
-          $theme_engine = $GLOBALS['theme_engine'];
-        }
-        else {
-          $themes = list_themes();
-          $theme = $themes[$this->theme];
-
-          // Find all our ancestor themes and put them in an array.
-          $base_theme = array();
-          $ancestor = $this->theme;
-          while ($ancestor && isset($themes[$ancestor]->base_theme)) {
-            $ancestor = $themes[$ancestor]->base_theme;
-            $base_theme[] = $themes[$ancestor];
-          }
-
-          // The base themes should be initialized in the right order.
-          $base_theme = array_reverse($base_theme);
-
-          // This code is copied directly from _drupal_theme_initialize()
-          $theme_engine = NULL;
-
-          // Initialize the theme.
-          if (isset($theme->engine)) {
-            // Include the engine.
-            include_once DRUPAL_ROOT . '/' . $theme->owner;
-
-            $theme_engine = $theme->engine;
-            if (function_exists($theme_engine . '_init')) {
-              foreach ($base_theme as $base) {
-                call_user_func($theme_engine . '_init', $base);
-              }
-              call_user_func($theme_engine . '_init', $theme);
-            }
-          }
-          else {
-            // include non-engine theme files
-            foreach ($base_theme as $base) {
-              // Include the theme file or the engine.
-              if (!empty($base->owner)) {
-                include_once DRUPAL_ROOT . '/' . $base->owner;
-              }
-            }
-            // and our theme gets one too.
-            if (!empty($theme->owner)) {
-              include_once DRUPAL_ROOT . '/' . $theme->owner;
-            }
-          }
-          $this->theme_registry = _theme_load_registry($theme, $base_theme, $theme_engine);
-        }
-
-        // If there's a theme engine involved, we also need to know its extension
-        // so we can give the proper filename.
-        $this->theme_extension = '.html.twig';
-        if (isset($theme_engine)) {
-          $extension_function = $theme_engine . '_extension';
-          if (function_exists($extension_function)) {
-            $this->theme_extension = $extension_function();
-          }
-        }
 
         $funcs = array();
         // Get theme functions for the display. Note that some displays may
@@ -2861,11 +2794,11 @@ protected function mergeHandler($type) {
    * Gets information about the current theme or a specific theme.
    */
   protected function getThemeInformation() {
-    if ($theme = drupal_container()->get('request')->request->get('theme')) {
+    if ($theme = \Drupal::request()->request->get('theme')) {
       $this->theme = $theme;
     }
     elseif (empty($this->theme)) {
-      $this->theme = config('system.theme')->get('default');
+      $this->theme = \Drupal::config('system.theme')->get('default');
     }
 
     if (isset($GLOBALS['theme']) && $GLOBALS['theme'] == $this->theme) {