diff --git a/core/includes/menu.inc b/core/includes/menu.inc
index 0c18a60..19e8370 100644
--- a/core/includes/menu.inc
+++ b/core/includes/menu.inc
@@ -1095,7 +1095,6 @@ function menu_tree_output($tree) {
  */
 function menu_tree_all_data($menu_name, $link = NULL, $max_depth = NULL) {
   $tree = &drupal_static(__FUNCTION__, array());
-
   $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   // Use $mlid as a flag for whether the data being loaded is for the whole tree.
@@ -1363,7 +1362,6 @@ function menu_build_tree($menu_name, array $parameters = array()) {
 function _menu_build_tree($menu_name, array $parameters = array()) {
   // Static cache of already built menu trees.
   $trees = &drupal_static(__FUNCTION__, array());
-
   $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   // Build the cache id; sort parents to prevent duplicate storage and remove
diff --git a/core/includes/theme.inc b/core/includes/theme.inc
index 6ea7285..ea1dd1e 100644
--- a/core/includes/theme.inc
+++ b/core/includes/theme.inc
@@ -2788,6 +2788,12 @@ function theme_get_suggestions($args, $base, $delimiter = '__') {
  * @see maintenance-page.tpl.php
  */
 function template_preprocess_maintenance_page(&$variables) {
+  global $theme;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
+  // Retrieve the theme data to list all available regions.
+  $theme_data = list_themes();
+  $regions = $theme_data[$theme]->info['regions'];
+
   // Add favicon
   if (theme_get_setting('toggle_favicon')) {
     $favicon = theme_get_setting('favicon');
@@ -2795,11 +2801,6 @@ function template_preprocess_maintenance_page(&$variables) {
     drupal_add_html_head_link(array('rel' => 'shortcut icon', 'href' => drupal_strip_dangerous_protocols($favicon), 'type' => $type));
   }
 
-  global $theme;
-  // Retrieve the theme data to list all available regions.
-  $theme_data = list_themes();
-  $regions = $theme_data[$theme]->info['regions'];
-
   // Get all region content set with drupal_add_region_content().
   foreach (array_keys($regions) as $region) {
     // Assign region to a region variable.
@@ -2830,8 +2831,6 @@ function template_preprocess_maintenance_page(&$variables) {
     }
   }
 
-  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
-
   $variables['head_title_array']  = $head_title;
   $variables['head_title']        = implode(' | ', $head_title);
   $variables['base_path']         = base_path();
diff --git a/core/modules/block/block.api.php b/core/modules/block/block.api.php
index a3d59b0..9fee858 100644
--- a/core/modules/block/block.api.php
+++ b/core/modules/block/block.api.php
@@ -328,7 +328,8 @@ function hook_block_view_MODULE_DELTA_alter(&$data, $block) {
  *   An array of $blocks, keyed by the block ID.
  */
 function hook_block_list_alter(&$blocks) {
-  global $language_interface, $theme_key;
+  global $theme_key;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   // This example shows how to achieve language specific visibility setting for
   // blocks.
diff --git a/core/modules/book/book.module b/core/modules/book/book.module
index bbdfab3..6d111d9 100644
--- a/core/modules/book/book.module
+++ b/core/modules/book/book.module
@@ -1224,7 +1224,8 @@ function book_toc($bid, $depth_limit, $exclude = array()) {
  * @see book-export-html.tpl.php
  */
 function template_preprocess_book_export_html(&$variables) {
-  global $base_url, $language_interface;
+  global $base_url;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   $variables['title'] = check_plain($variables['title']);
   $variables['base_url'] = $base_url;
diff --git a/core/modules/comment/lib/Drupal/comment/Tests/CommentTokenReplaceTest.php b/core/modules/comment/lib/Drupal/comment/Tests/CommentTokenReplaceTest.php
index a658cfb..aea41ef 100644
--- a/core/modules/comment/lib/Drupal/comment/Tests/CommentTokenReplaceTest.php
+++ b/core/modules/comment/lib/Drupal/comment/Tests/CommentTokenReplaceTest.php
@@ -23,7 +23,7 @@ class CommentTokenReplaceTest extends CommentTestBase {
    * Creates a comment, then tests the tokens generated from it.
    */
   function testCommentTokenReplacement() {
-    global $language_interface;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
     $url_options = array(
       'absolute' => TRUE,
       'language' => $language_interface,
diff --git a/core/modules/contact/contact.pages.inc b/core/modules/contact/contact.pages.inc
index 2a27cf1..7896ae5 100644
--- a/core/modules/contact/contact.pages.inc
+++ b/core/modules/contact/contact.pages.inc
@@ -129,7 +129,8 @@ function contact_site_form_validate($form, &$form_state) {
  * @see contact_site_form_validate()
  */
 function contact_site_form_submit($form, &$form_state) {
-  global $user, $language_interface;
+  global $user;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   $values = $form_state['values'];
   $values['sender'] = $user;
@@ -250,7 +251,8 @@ function contact_personal_form($form, &$form_state, $recipient) {
  * @see contact_personal_form_validate()
  */
 function contact_personal_form_submit($form, &$form_state) {
-  global $user, $language_interface;
+  global $user;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   $values = $form_state['values'];
   $values['sender'] = $user;
diff --git a/core/modules/entity/entity.module b/core/modules/entity/entity.module
index 26dfc67..daaa9f6 100644
--- a/core/modules/entity/entity.module
+++ b/core/modules/entity/entity.module
@@ -45,7 +45,7 @@ function entity_modules_disabled() {
  * @see hook_entity_info_alter()
  */
 function entity_get_info($entity_type = NULL) {
-  global $language_interface;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   // Use the advanced drupal_static() pattern, since this is called very often.
   static $drupal_static_fast;
diff --git a/core/modules/field/field.info.inc b/core/modules/field/field.info.inc
index 7ce5b98..3d7f546 100644
--- a/core/modules/field/field.info.inc
+++ b/core/modules/field/field.info.inc
@@ -67,7 +67,7 @@ function field_info_cache_clear() {
  * @see _field_info_collate_types_reset()
  */
 function _field_info_collate_types() {
-  global $language_interface;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   // Use the advanced drupal_static() pattern, since this is called very often.
   static $drupal_static_fast;
diff --git a/core/modules/file/tests/file.test b/core/modules/file/tests/file.test
index fd25930..0f70aa6 100644
--- a/core/modules/file/tests/file.test
+++ b/core/modules/file/tests/file.test
@@ -1079,7 +1079,7 @@ class FileTokenReplaceTestCase extends FileFieldTestCase {
    * Creates a file, then tests the tokens generated from it.
    */
   function testFileTokenReplacement() {
-    global $language_interface;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
     $url_options = array(
       'absolute' => TRUE,
       'language' => $language_interface,
diff --git a/core/modules/filter/filter.module b/core/modules/filter/filter.module
index 94d8a03..b7a3059 100644
--- a/core/modules/filter/filter.module
+++ b/core/modules/filter/filter.module
@@ -399,7 +399,7 @@ function filter_modules_disabled($modules) {
  * @see filter_formats_reset()
  */
 function filter_formats($account = NULL) {
-  global $language_interface;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
   $formats = &drupal_static(__FUNCTION__, array());
 
   // All available formats are cached for performance.
diff --git a/core/modules/image/image.module b/core/modules/image/image.module
index 905e6a7..f3bf83d 100644
--- a/core/modules/image/image.module
+++ b/core/modules/image/image.module
@@ -923,7 +923,7 @@ function image_style_path($style_name, $uri) {
  * @see image_effect_definition_load()
  */
 function image_effect_definitions() {
-  global $language_interface;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   // hook_image_effect_info() includes translated strings, so each language is
   // cached separately.
diff --git a/core/modules/language/language.module b/core/modules/language/language.module
index 7acc783..6704f95 100644
--- a/core/modules/language/language.module
+++ b/core/modules/language/language.module
@@ -234,7 +234,7 @@ function language_delete($langcode) {
  * and checks to see if a related right to left CSS file should be included.
  */
 function language_css_alter(&$css) {
-  global $language_interface;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   // If the current language is RTL, add the CSS file with the RTL overrides.
   if ($language_interface->direction == LANGUAGE_RTL) {
diff --git a/core/modules/locale/locale.module b/core/modules/locale/locale.module
index 35f8032..668e089 100644
--- a/core/modules/locale/locale.module
+++ b/core/modules/locale/locale.module
@@ -190,8 +190,8 @@ function locale_menu() {
  * Initialize date formats according to the user's current locale.
  */
 function locale_init() {
-  global $conf, $language_interface;
-
+  global $conf;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
   // For each date type (e.g. long, short), get the localized date format
   // for the user's current language and override the default setting for it
   // in $conf. This should happen on all pages except the date and time formats
@@ -389,7 +389,7 @@ function locale_language_delete($language) {
  *   Language code to use for the lookup.
  */
 function locale($string = NULL, $context = NULL, $langcode = NULL) {
-  global $language_interface;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   // Use the advanced drupal_static() pattern, since this is called very often.
   static $drupal_static_fast;
@@ -502,7 +502,7 @@ function locale_reset() {
  *   plural formula.
  */
 function locale_get_plural($count, $langcode = NULL) {
-  global $language_interface;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   // Used to locally cache the plural formulas for all languages.
   $plural_formulas = &drupal_static(__FUNCTION__, array());
@@ -588,7 +588,7 @@ function locale_system_update($components) {
  * file if necessary, and adds it to the page.
  */
 function locale_js_alter(&$javascript) {
-  global $language_interface;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   $dir = 'public://' . variable_get('locale_js_directory', 'languages');
   $parsed = variable_get('javascript_parsed', array());
@@ -647,7 +647,7 @@ function locale_js_alter(&$javascript) {
  * Provides the language support for the jQuery UI Date Picker.
  */
 function locale_library_info_alter(&$libraries, $module) {
-  global $language_interface;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
   if ($module == 'system' && isset($libraries['system']['ui.datepicker'])) {
     $datepicker = drupal_get_path('module', 'locale') . '/locale.datepicker.js';
     $libraries['system']['ui.datepicker']['js'][$datepicker] = array('group' => JS_THEME);
@@ -785,7 +785,7 @@ function locale_form_system_file_system_settings_alter(&$form, $form_state) {
  */
 function locale_preprocess_node(&$variables) {
   if ($variables['langcode'] != LANGUAGE_NOT_SPECIFIED) {
-    global $language_interface;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
     $node_language = language_load($variables['langcode']);
     if ($node_language->langcode != $language_interface->langcode) {
diff --git a/core/modules/openid/openid.inc b/core/modules/openid/openid.inc
index 518dc8a..d594dde 100644
--- a/core/modules/openid/openid.inc
+++ b/core/modules/openid/openid.inc
@@ -83,7 +83,7 @@ function openid_redirect_http($url, $message) {
  * Creates a js auto-submit redirect for (for the 2.x protocol)
  */
 function openid_redirect($url, $message) {
-  global $language_interface;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   $output = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">' . "\n";
   $output .= '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="' . $language_interface->langcode . '" lang="' . $language_interface->langcode . '">' . "\n";
diff --git a/core/modules/poll/lib/Drupal/poll/Tests/PollTokenReplaceTest.php b/core/modules/poll/lib/Drupal/poll/Tests/PollTokenReplaceTest.php
index 1e19ec0..3aaab13 100644
--- a/core/modules/poll/lib/Drupal/poll/Tests/PollTokenReplaceTest.php
+++ b/core/modules/poll/lib/Drupal/poll/Tests/PollTokenReplaceTest.php
@@ -23,7 +23,7 @@ class PollTokenReplaceTest extends PollTestBase {
    * Creates a poll, then tests the tokens generated from it.
    */
   function testPollTokenReplacement() {
-    global $language_interface;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
     // Craete a poll with three choices.
     $title = $this->randomName();
diff --git a/core/modules/search/search.pages.inc b/core/modules/search/search.pages.inc
index ff0d271..c940223 100644
--- a/core/modules/search/search.pages.inc
+++ b/core/modules/search/search.pages.inc
@@ -104,7 +104,7 @@ function template_preprocess_search_results(&$variables) {
  * @see search-result.tpl.php
  */
 function template_preprocess_search_result(&$variables) {
-  global $language_interface;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   $result = $variables['result'];
   $variables['url'] = check_url($result['link']);
diff --git a/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php b/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php
index 12c6f11..902fe6a 100644
--- a/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php
+++ b/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php
@@ -608,7 +608,8 @@ abstract class TestBase {
    * @see TestBase::tearDown()
    */
   protected function prepareEnvironment() {
-    global $user, $language_interface, $conf;
+    global $user, $conf;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
     // Backup current in-memory configuration.
     $this->originalConf = $conf;
@@ -672,7 +673,8 @@ abstract class TestBase {
    * @see TestBase::prepareEnvironment()
    */
   protected function tearDown() {
-    global $user, $language_interface, $conf;
+    global $user, $conf;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
     // In case a fatal error occurred that was not in the test process read the
     // log to pick up any fatal errors.
diff --git a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
index 3384e2c..f1a5f95 100644
--- a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
+++ b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
@@ -578,7 +578,8 @@ abstract class WebTestBase extends TestBase {
    * @see Drupal\simpletest\WebTestBase::prepareEnvironment()
    */
   protected function setUp() {
-    global $user, $language_interface, $conf;
+    global $user, $conf;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
     // Create the database prefix for this test.
     $this->prepareDatabasePrefix();
diff --git a/core/modules/statistics/lib/Drupal/statistics/Tests/StatisticsTokenReplaceTest.php b/core/modules/statistics/lib/Drupal/statistics/Tests/StatisticsTokenReplaceTest.php
index 3045611..0cc6e41 100644
--- a/core/modules/statistics/lib/Drupal/statistics/Tests/StatisticsTokenReplaceTest.php
+++ b/core/modules/statistics/lib/Drupal/statistics/Tests/StatisticsTokenReplaceTest.php
@@ -23,7 +23,7 @@ class StatisticsTokenReplaceTest extends StatisticsTestBase {
    * Creates a node, then tests the statistics tokens generated from it.
    */
   function testStatisticsTokenReplacement() {
-    global $language_interface;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
     // Create user and node.
     $user = $this->drupalCreateUser(array('create page content'));
diff --git a/core/modules/system/language.api.php b/core/modules/system/language.api.php
index f1cd519..903de4a 100644
--- a/core/modules/system/language.api.php
+++ b/core/modules/system/language.api.php
@@ -52,7 +52,7 @@ function hook_language_init() {
  *   The current path.
  */
 function hook_language_switch_links_alter(array &$links, $type, $path) {
-  global $language_interface;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   if ($type == LANGUAGE_TYPE_CONTENT && isset($links[$language_interface->langcode])) {
     foreach ($links[$language_interface->langcode] as $link) {
diff --git a/core/modules/system/lib/Drupal/system/Tests/Common/CascadingStylesheetsTest.php b/core/modules/system/lib/Drupal/system/Tests/Common/CascadingStylesheetsTest.php
index 9c3d7aa..441a2ba 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Common/CascadingStylesheetsTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Common/CascadingStylesheetsTest.php
@@ -218,7 +218,7 @@ class CascadingStylesheetsTest extends WebTestBase {
    */
   function testAlter() {
     // Switch the language to a right to left language and add system.base.css.
-    global $language_interface;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
     $language_interface->direction = LANGUAGE_RTL;
     $path = drupal_get_path('module', 'system');
     drupal_add_css($path . '/system.base.css');
diff --git a/core/modules/system/lib/Drupal/system/Tests/Common/MailTest.php b/core/modules/system/lib/Drupal/system/Tests/Common/MailTest.php
index cf33f48..831fcea 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Common/MailTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Common/MailTest.php
@@ -41,7 +41,7 @@ class MailTest extends WebTestBase implements MailInterface {
    * Assert that the pluggable mail system is functional.
    */
   public function testPluggableFramework() {
-    global $language_interface;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
     // Use MailTestCase for sending a message.
     $message = drupal_mail('simpletest', 'mail_test', 'testing@example.com', $language_interface);
diff --git a/core/modules/system/system.api.php b/core/modules/system/system.api.php
index ed5b7a0..0510dfb 100644
--- a/core/modules/system/system.api.php
+++ b/core/modules/system/system.api.php
@@ -1975,7 +1975,8 @@ function hook_xmlrpc_alter(&$methods) {
  *     the message is not possible to translate.
  */
 function hook_watchdog(array $log_entry) {
-  global $base_url, $language_interface;
+  global $base_url;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   $severity_list = array(
     WATCHDOG_EMERGENCY     => t('Emergency'),
diff --git a/core/modules/system/system.test b/core/modules/system/system.test
index 17b96c8..8222e2d 100644
--- a/core/modules/system/system.test
+++ b/core/modules/system/system.test
@@ -1950,11 +1950,13 @@ class TokenReplaceTestCase extends WebTestBase {
    * Creates a user and a node, then tests the tokens generated from them.
    */
   function testTokenReplacement() {
+    global $user;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
+
     // Create the initial objects.
     $account = $this->drupalCreateUser();
     $node = $this->drupalCreateNode(array('uid' => $account->uid));
     $node->title = '<blink>Blinking Text</blink>';
-    global $user, $language_interface;
 
     $source  = '[node:title]';         // Title of the node we passed in
     $source .= '[node:author:name]';   // Node author's name
@@ -1999,7 +2001,7 @@ class TokenReplaceTestCase extends WebTestBase {
    * Test whether token-replacement works in various contexts.
    */
   function testSystemTokenRecognition() {
-    global $language_interface;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
     // Generate prefixes and suffixes for the token context.
     $tests = array(
@@ -2028,7 +2030,8 @@ class TokenReplaceTestCase extends WebTestBase {
    * Tests the generation of all system site information tokens.
    */
   function testSystemSiteTokenReplacement() {
-    global $language_interface;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
+
     $url_options = array(
       'absolute' => TRUE,
       'language' => $language_interface,
@@ -2069,7 +2072,7 @@ class TokenReplaceTestCase extends WebTestBase {
    * Tests the generation of all system date tokens.
    */
   function testSystemDateTokenReplacement() {
-    global $language_interface;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
     // Set time to one hour before request.
     $date = REQUEST_TIME - 3600;
diff --git a/core/modules/system/tests/upgrade/upgrade.test b/core/modules/system/tests/upgrade/upgrade.test
index 429bddb..97b85be 100644
--- a/core/modules/system/tests/upgrade/upgrade.test
+++ b/core/modules/system/tests/upgrade/upgrade.test
@@ -70,7 +70,7 @@ abstract class UpgradePathTestCase extends WebTestBase {
    * @see Drupal\simpletest\WebTestBase::prepareEnvironment()
    */
   protected function setUp() {
-    global $user, $language_interface, $conf;
+    global $user, $conf;
 
     // Load the Update API.
     require_once DRUPAL_ROOT . '/core/includes/update.inc';
diff --git a/core/modules/taxonomy/taxonomy.test b/core/modules/taxonomy/taxonomy.test
index c7e87e8..74ae013 100644
--- a/core/modules/taxonomy/taxonomy.test
+++ b/core/modules/taxonomy/taxonomy.test
@@ -1776,7 +1776,7 @@ class TaxonomyTokenReplaceTestCase extends TaxonomyWebTestCase {
    * Creates some terms and a node, then tests the tokens generated from them.
    */
   function testTaxonomyTokenReplacement() {
-    global $language_interface;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
     // Create two taxonomy terms.
     $term1 = $this->createTerm($this->vocabulary);
diff --git a/core/modules/user/lib/Drupal/user/Tests/UserTokenReplaceTest.php b/core/modules/user/lib/Drupal/user/Tests/UserTokenReplaceTest.php
index d6466cd..5cd3cd3 100644
--- a/core/modules/user/lib/Drupal/user/Tests/UserTokenReplaceTest.php
+++ b/core/modules/user/lib/Drupal/user/Tests/UserTokenReplaceTest.php
@@ -25,7 +25,7 @@ class UserTokenReplaceTest extends WebTestBase {
    * Creates a user, then tests the tokens generated from it.
    */
   function testUserTokenReplacement() {
-    global $language_interface;
+    $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
     $url_options = array(
       'absolute' => TRUE,
       'language' => $language_interface,
diff --git a/core/modules/user/user.module b/core/modules/user/user.module
index 01934b4..91aff01 100644
--- a/core/modules/user/user.module
+++ b/core/modules/user/user.module
@@ -700,7 +700,8 @@ function user_user_view($account) {
  * @see user_validate_mail()
  */
 function user_account_form(&$form, &$form_state) {
-  global $user, $language_interface;
+  global $user;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   $account = $form['#user'];
   $register = ($form['#user']->uid > 0 ? FALSE : TRUE);
diff --git a/core/modules/user/user.pages.inc b/core/modules/user/user.pages.inc
index fcda92e..436035e 100644
--- a/core/modules/user/user.pages.inc
+++ b/core/modules/user/user.pages.inc
@@ -74,7 +74,7 @@ function user_pass_validate($form, &$form_state) {
 }
 
 function user_pass_submit($form, &$form_state) {
-  global $language_interface;
+  $language_interface = drupal_container()->get(LANGUAGE_TYPE_INTERFACE);
 
   $account = $form_state['values']['account'];
   // Mail one time login URL and instructions using current language.
diff --git a/core/update.php b/core/update.php
index b47702e..3ace66a 100644
--- a/core/update.php
+++ b/core/update.php
@@ -383,10 +383,6 @@ update_prepare_d8_bootstrap();
 // Determine if the current user has access to run update.php.
 drupal_bootstrap(DRUPAL_BOOTSTRAP_SESSION);
 
-// The interface language global has been renamed in D8, we must ensure that it
-// contains a valid value while language settings are upgraded.
-// @todo Remove this globals reference entirely: http://drupal.org/node/1510686
-$GLOBALS[LANGUAGE_TYPE_INTERFACE] = language_default();
 
 // Ensure the default language is properly registered within the Dependency
 // Injection container during the upgrade process.