diff -u b/core/includes/common.inc b/core/includes/common.inc
--- b/core/includes/common.inc
+++ b/core/includes/common.inc
@@ -1,6 +1,5 @@
 <?php
 
-use Drupal\Component\Utility\Bytes;
 use Drupal\Component\Utility\Crypt;
 use Drupal\Component\Utility\Json;
 use Drupal\Component\Utility\Number;
@@ -12,6 +11,7 @@
 use Drupal\Component\Serialization\Json;
 use Drupal\Component\Serialization\Yaml;
 use Drupal\Component\Serialization\Exception\InvalidDataTypeException;
+use Drupal\Component\Utility\Bytes;
 use Drupal\Component\Utility\Crypt;
 use Drupal\Component\Utility\Number;
 use Drupal\Component\Utility\Settings;
diff -u b/core/lib/Drupal/Core/Bootstrap/Bootstrap.php b/core/lib/Drupal/Core/Bootstrap/Bootstrap.php
--- b/core/lib/Drupal/Core/Bootstrap/Bootstrap.php
+++ b/core/lib/Drupal/Core/Bootstrap/Bootstrap.php
@@ -45,76 +45,2 @@
   }
-
-  /**
-   * Sets appropriate server variables needed for command line scripts to work.
-   *
-   * This function can be called by command line scripts before bootstrapping
-   * Drupal, to ensure that the page loads with the desired server parameters.
-   * This is because many parts of Drupal assume that they are running in a web
-   * browser and therefore use information from the global PHP $_SERVER variable
-   * that does not get set when Drupal is run from the command line.
-   *
-   * In many cases, the default way in which this function populates the $_SERVER
-   * variable is sufficient, and it can therefore be called without passing in
-   * any input. However, command line scripts running on a multisite installation
-   * (or on any installation that has settings.php stored somewhere other than
-   * the sites/default folder) need to pass in the URL of the site to allow
-   * Drupal to detect the correct location of the settings.php file. Passing in
-   * the 'url' parameter is also required for functions like request_uri() to
-   * return the expected values.
-   *
-   * Most other parameters do not need to be passed in, but may be necessary in
-   * some cases; for example, if \Drupal::request()->getClientIP()
-   * needs to return anything but the standard localhost value ('127.0.0.1'),
-   * the command line script should pass in the desired value via the
-   * 'REMOTE_ADDR' key.
-   *
-   * @param \Symfony\Component\HttpFoundation\Request $request
-   *   A request object.
-   *
-   * @param $variables
-   *   (optional) An associative array of variables within
-   *   \Drupal::request()->server that should be replaced. If the special element
-   *   'url' is provided in this array, it will be used to populate some of the
-   *   server defaults; it should be set to the URL of the current page request,
-   *   excluding any GET request but including the script name
-   *   (e.g., http://www.example.com/mysite/index.php).
-   *
-   * @see conf_path()
-   * @see request_uri()
-   * @see \Symfony\Component\HttpFoundation\Request::getClientIP()
-   *
-   * @todo Replace use of `$_REQUEST` with a Symfony request object.
-   */
-  public static function overrideServerVariables(Request $request, $variables = array()) {
-    $server_vars = $request->server->all();
-    // Allow the provided URL to override any existing values in $_SERVER.
-    if (isset($variables['url'])) {
-      $url = parse_url($variables['url']);
-      if (isset($url['host'])) {
-        $server_vars['HTTP_HOST'] = $url['host'];
-      }
-      if (isset($url['path'])) {
-        $server_vars['SCRIPT_NAME'] = $url['path'];
-      }
-      unset($variables['url']);
-    }
-    // Define default values for $_SERVER keys. These will be used if $_SERVER
-    // does not already define them and no other values are passed in to this
-    // function.
-    $defaults = array(
-      'HTTP_HOST' => 'localhost',
-      'SCRIPT_NAME' => NULL,
-      'REMOTE_ADDR' => '127.0.0.1',
-      'REQUEST_METHOD' => 'GET',
-      'SERVER_NAME' => NULL,
-      'SERVER_SOFTWARE' => NULL,
-      'HTTP_USER_AGENT' => NULL,
-    );
-    // Replace elements of the $_SERVER array, as appropriate.
-    $request->server->replace($variables + $server_vars + $defaults);
-
-    // @todo remove once conf_path() no longer uses $_SERVER.
-    $_SERVER = $request->server->all();
-  }
-
 }