diff --git a/core/includes/menu.inc b/core/includes/menu.inc
index f6188cd..34868be 100644
--- a/core/includes/menu.inc
+++ b/core/includes/menu.inc
@@ -970,6 +970,7 @@ function _menu_link_translate(&$item, $translate = FALSE) {
 function menu_item_route_access(Route $route, $href, &$map) {
   $request = Request::create('/' . $href);
   $request->attributes->set('_system_path', $href);
+  $request->attributes->set('_account', Drupal::request()->attributes->get('_account'));
   // Attempt to match this path to provide a fully built request to the
   // access checker.
   try {
diff --git a/core/lib/Drupal/Core/Access/AccessInterface.php b/core/lib/Drupal/Core/Access/AccessInterface.php
index f555ecb..a950dfc 100644
--- a/core/lib/Drupal/Core/Access/AccessInterface.php
+++ b/core/lib/Drupal/Core/Access/AccessInterface.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\Core\Access;
 
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
@@ -47,6 +48,8 @@
    *   The route to check against.
    * @param \Symfony\Component\HttpFoundation\Request $request
    *   The request object.
+   * @param \Drupal\Core\Session\AccountInterface $account
+   *   (optional) The currently logged in account.
    *
    * @return mixed
    *   TRUE if access is allowed.
diff --git a/core/lib/Drupal/Core/Access/AccessManager.php b/core/lib/Drupal/Core/Access/AccessManager.php
index 14729a5..d0484fb 100644
--- a/core/lib/Drupal/Core/Access/AccessManager.php
+++ b/core/lib/Drupal/Core/Access/AccessManager.php
@@ -125,7 +125,6 @@ protected function applies(Route $route) {
    */
   public function check(Route $route, Request $request) {
     $checks = $route->getOption('_access_checks') ?: array();
-
     $conjunction = $route->getOption('_access_mode') ?: 'ANY';
 
     if ($conjunction == 'ALL') {
@@ -157,7 +156,8 @@ protected function checkAll(array $checks, Route $route, Request $request) {
         $this->loadCheck($service_id);
       }
 
-      $service_access = $this->checks[$service_id]->access($route, $request);
+      $account = $request->attributes->get('_account');
+      $service_access = $this->checks[$service_id]->access($route, $request, $account);
       if ($service_access === AccessInterface::ALLOW) {
         $access = TRUE;
       }
@@ -193,7 +193,8 @@ protected function checkAny(array $checks, $route, $request) {
         $this->loadCheck($service_id);
       }
 
-      $service_access = $this->checks[$service_id]->access($route, $request);
+      $account = $request->attributes->get('_account');
+      $service_access = $this->checks[$service_id]->access($route, $request, $account);
       if ($service_access === AccessInterface::ALLOW) {
         $access = TRUE;
       }
diff --git a/core/lib/Drupal/Core/Access/DefaultAccessCheck.php b/core/lib/Drupal/Core/Access/DefaultAccessCheck.php
index 46f8a63..21a6c11 100644
--- a/core/lib/Drupal/Core/Access/DefaultAccessCheck.php
+++ b/core/lib/Drupal/Core/Access/DefaultAccessCheck.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\Core\Access;
 
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -25,7 +26,7 @@ public function appliesTo() {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     if ($route->getRequirement('_access') === 'TRUE') {
       return static::ALLOW;
     }
diff --git a/core/lib/Drupal/Core/Entity/EntityAccessCheck.php b/core/lib/Drupal/Core/Entity/EntityAccessCheck.php
index bce3a9e..1fb4637 100644
--- a/core/lib/Drupal/Core/Entity/EntityAccessCheck.php
+++ b/core/lib/Drupal/Core/Entity/EntityAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\Core\Entity;
 
 use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 use Drupal\Core\Access\StaticAccessCheckInterface;
@@ -37,7 +38,7 @@ public function appliesTo() {
    * @endcode
    * Available operations are 'view', 'update', 'create', and 'delete'.
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     // Split the entity type and the operation.
     $requirement = $route->getRequirement('_entity_access');
     list($entity_type, $operation) = explode('.', $requirement);
@@ -45,7 +46,7 @@ public function access(Route $route, Request $request) {
     if ($request->attributes->has($entity_type)) {
       $entity = $request->attributes->get($entity_type);
       if ($entity instanceof EntityInterface) {
-        return $entity->access($operation);
+        return $entity->access($operation, $account);
       }
     }
     // No opinion, so other access checks should decide if access should be
diff --git a/core/lib/Drupal/Core/Entity/EntityCreateAccessCheck.php b/core/lib/Drupal/Core/Entity/EntityCreateAccessCheck.php
index 2630034..f7156f0 100644
--- a/core/lib/Drupal/Core/Entity/EntityCreateAccessCheck.php
+++ b/core/lib/Drupal/Core/Entity/EntityCreateAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\Core\Entity;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
@@ -50,9 +51,9 @@ public function appliesTo() {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     list($entity_type, $bundle) = explode(':', $route->getRequirement($this->requirementsKey) . ':');
-    return $this->entityManager->getAccessController($entity_type)->createAccess($bundle);
+    return $this->entityManager->getAccessController($entity_type)->createAccess($bundle, $account);
   }
 
 }
diff --git a/core/modules/aggregator/lib/Drupal/aggregator/Access/CategoriesAccessCheck.php b/core/modules/aggregator/lib/Drupal/aggregator/Access/CategoriesAccessCheck.php
index 2429572..4b02b5d 100644
--- a/core/modules/aggregator/lib/Drupal/aggregator/Access/CategoriesAccessCheck.php
+++ b/core/modules/aggregator/lib/Drupal/aggregator/Access/CategoriesAccessCheck.php
@@ -9,6 +9,7 @@
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
 use Drupal\Core\Database\Connection;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
@@ -44,10 +45,8 @@ public function appliesTo() {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
-    // @todo Replace user_access() with a correctly injected and session-using
-    // alternative.
-    return user_access('access news feeds') && (bool) $this->database->queryRange('SELECT 1 FROM {aggregator_category}', 0, 1)->fetchField();
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
+    return $account->hasPermission('access news feeds') && (bool) $this->database->queryRange('SELECT 1 FROM {aggregator_category}', 0, 1)->fetchField();
   }
 
 }
diff --git a/core/modules/block/lib/Drupal/block/Access/BlockThemeAccessCheck.php b/core/modules/block/lib/Drupal/block/Access/BlockThemeAccessCheck.php
index b5ca0b2..b43dcc4 100644
--- a/core/modules/block/lib/Drupal/block/Access/BlockThemeAccessCheck.php
+++ b/core/modules/block/lib/Drupal/block/Access/BlockThemeAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\block\Access;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -26,9 +27,9 @@ public function appliesTo() {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     $theme = $request->attributes->get('theme');
-    return user_access('administer blocks') && drupal_theme_access($theme);
+    return $account->hasPermission('administer blocks') && drupal_theme_access($theme);
   }
 
 }
diff --git a/core/modules/edit/lib/Drupal/edit/Access/EditEntityAccessCheck.php b/core/modules/edit/lib/Drupal/edit/Access/EditEntityAccessCheck.php
index bce4160..f91671e 100644
--- a/core/modules/edit/lib/Drupal/edit/Access/EditEntityAccessCheck.php
+++ b/core/modules/edit/lib/Drupal/edit/Access/EditEntityAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\edit\Access;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
@@ -29,7 +30,7 @@ public function appliesTo() {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     // @todo Request argument validation and object loading should happen
     //   elsewhere in the request processing pipeline:
     //   http://drupal.org/node/1798214.
diff --git a/core/modules/edit/lib/Drupal/edit/Access/EditEntityFieldAccessCheck.php b/core/modules/edit/lib/Drupal/edit/Access/EditEntityFieldAccessCheck.php
index 9559be7..6db45cf 100644
--- a/core/modules/edit/lib/Drupal/edit/Access/EditEntityFieldAccessCheck.php
+++ b/core/modules/edit/lib/Drupal/edit/Access/EditEntityFieldAccessCheck.php
@@ -9,6 +9,7 @@
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
 use Drupal\edit\Access\EditEntityFieldAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
@@ -29,7 +30,7 @@ public function appliesTo() {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     // @todo Request argument validation and object loading should happen
     //   elsewhere in the request processing pipeline:
     //   http://drupal.org/node/1798214.
diff --git a/core/modules/field_ui/lib/Drupal/field_ui/Access/FormModeAccessCheck.php b/core/modules/field_ui/lib/Drupal/field_ui/Access/FormModeAccessCheck.php
index 871db1f..75f5f81 100644
--- a/core/modules/field_ui/lib/Drupal/field_ui/Access/FormModeAccessCheck.php
+++ b/core/modules/field_ui/lib/Drupal/field_ui/Access/FormModeAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\field_ui\Access;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -26,7 +27,7 @@ public function appliesTo() {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     if ($entity_type = $request->attributes->get('entity_type')) {
       $bundle = $request->attributes->get('bundle');
       $form_mode = $request->attributes->get('mode');
@@ -35,7 +36,7 @@ public function access(Route $route, Request $request) {
       $visibility = ($form_mode == 'default') || !empty($form_mode_settings[$form_mode]['status']);
       if ($visibility) {
         $permission = $route->getRequirement('_field_ui_form_mode_access');
-        return user_access($permission);
+        return $account->hasPermission($permission);
       }
     }
   }
diff --git a/core/modules/field_ui/lib/Drupal/field_ui/Access/ViewModeAccessCheck.php b/core/modules/field_ui/lib/Drupal/field_ui/Access/ViewModeAccessCheck.php
index e0c3c92..fd620be 100644
--- a/core/modules/field_ui/lib/Drupal/field_ui/Access/ViewModeAccessCheck.php
+++ b/core/modules/field_ui/lib/Drupal/field_ui/Access/ViewModeAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\field_ui\Access;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -26,7 +27,7 @@ public function appliesTo() {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     if ($entity_type = $request->attributes->get('entity_type')) {
       $bundle = $request->attributes->get('bundle');
       $view_mode = $request->attributes->get('mode');
@@ -35,7 +36,7 @@ public function access(Route $route, Request $request) {
       $visibility = ($view_mode == 'default') || !empty($view_mode_settings[$view_mode]['status']);
       if ($visibility) {
         $permission = $route->getRequirement('_field_ui_view_mode_access');
-        return user_access($permission);
+        return $account->hasPermission($permission);
       }
     }
   }
diff --git a/core/modules/filter/lib/Drupal/filter/Access/FilterAccessCheck.php b/core/modules/filter/lib/Drupal/filter/Access/FilterAccessCheck.php
index 25918e8..5c674fc 100644
--- a/core/modules/filter/lib/Drupal/filter/Access/FilterAccessCheck.php
+++ b/core/modules/filter/lib/Drupal/filter/Access/FilterAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\filter\Access;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -26,7 +27,7 @@ public function appliesTo() {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     if ($format = $request->attributes->get('filter_format')) {
       // Handle special cases up front. All users have access to the fallback
       // format.
@@ -37,7 +38,7 @@ public function access(Route $route, Request $request) {
       // Check the permission if one exists; otherwise, we have a non-existent
       // format so we return FALSE.
       $permission = filter_permission_name($format);
-      return !empty($permission) && user_access($permission);
+      return !empty($permission) && $account->hasPermission($permission);
     }
   }
 }
diff --git a/core/modules/filter/lib/Drupal/filter/Access/FormatDisableCheck.php b/core/modules/filter/lib/Drupal/filter/Access/FormatDisableCheck.php
index 1f905bb..67befb0 100644
--- a/core/modules/filter/lib/Drupal/filter/Access/FormatDisableCheck.php
+++ b/core/modules/filter/lib/Drupal/filter/Access/FormatDisableCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\filter\Access;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -26,9 +27,9 @@ public function appliesTo() {
   /**
    * Implements \Drupal\Core\Access\AccessCheckInterface::access().
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     if ($format = $request->attributes->get('filter_format')) {
-      return user_access('administer filters') && ($format->format != filter_fallback_format());
+      return $account->hasPermission('administer filters') && ($format->format != filter_fallback_format());
     }
 
     return FALSE;
diff --git a/core/modules/node/lib/Drupal/node/Access/NodeRevisionAccessCheck.php b/core/modules/node/lib/Drupal/node/Access/NodeRevisionAccessCheck.php
index aca491d..779d71a 100644
--- a/core/modules/node/lib/Drupal/node/Access/NodeRevisionAccessCheck.php
+++ b/core/modules/node/lib/Drupal/node/Access/NodeRevisionAccessCheck.php
@@ -72,9 +72,9 @@ public function applies(Route $route) {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     $revision = $this->nodeStorage->loadRevision($request->attributes->get('node_revision'));
-    return $this->checkAccess($revision, $route->getRequirement('_access_node_revision')) ? static::ALLOW : static::DENY;
+    return $this->checkAccess($revision, $account, $route->getRequirement('_access_node_revision')) ? static::ALLOW : static::DENY;
   }
 
   /**
@@ -82,12 +82,11 @@ public function access(Route $route, Request $request) {
    *
    * @param \Drupal\node\NodeInterface $node
    *   The node to check.
+   * @param \Drupal\Core\Session\AccountInterface $account
+   *   A user object representing the user for whom the operation is
+   *   to be performed.
    * @param string $op
    *   (optional) The specific operation being checked. Defaults to 'view.'
-   * @param \Drupal\Core\Session\AccountInterface|null $account
-   *   (optional) A user object representing the user for whom the operation is
-   *   to be performed. Determines access for a user other than the current user.
-   *   Defaults to NULL.
    * @param string|null $langcode
    *   (optional) Language code for the variant of the node. Different language
    *   variants might have different permissions associated. If NULL, the
@@ -96,7 +95,7 @@ public function access(Route $route, Request $request) {
    * @return bool
    *   TRUE if the operation may be performed, FALSE otherwise.
    */
-  public function checkAccess(NodeInterface $node, $op = 'view', AccountInterface $account = NULL, $langcode = NULL) {
+  public function checkAccess(NodeInterface $node, AccountInterface $account, $op = 'view', $langcode = NULL) {
     $map = array(
       'view' => 'view all revisions',
       'update' => 'revert all revisions',
@@ -115,10 +114,6 @@ public function checkAccess(NodeInterface $node, $op = 'view', AccountInterface
       return FALSE;
     }
 
-    if (!isset($account)) {
-      $account = $GLOBALS['user'];
-    }
-
     // If no language code was provided, default to the node revision's langcode.
     if (empty($langcode)) {
       $langcode = $node->language()->id;
diff --git a/core/modules/overlay/lib/Drupal/overlay/Access/DismissMessageAccessCheck.php b/core/modules/overlay/lib/Drupal/overlay/Access/DismissMessageAccessCheck.php
index fca139c..828d489 100644
--- a/core/modules/overlay/lib/Drupal/overlay/Access/DismissMessageAccessCheck.php
+++ b/core/modules/overlay/lib/Drupal/overlay/Access/DismissMessageAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\overlay\Access;
 
 use Drupal\Core\Access\AccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -26,8 +27,7 @@ public function applies(Route $route) {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
-    $account = $request->attributes->get('_account');
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     if (!user_access('access overlay', $account)) {
       return static::DENY;
     }
diff --git a/core/modules/rest/lib/Drupal/rest/Access/CSRFAccessCheck.php b/core/modules/rest/lib/Drupal/rest/Access/CSRFAccessCheck.php
index 0d9dd87..460de6c 100644
--- a/core/modules/rest/lib/Drupal/rest/Access/CSRFAccessCheck.php
+++ b/core/modules/rest/lib/Drupal/rest/Access/CSRFAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\rest\Access;
 
 use Drupal\Core\Access\AccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -42,7 +43,7 @@ public function applies(Route $route) {
   /**
    * Implements AccessCheckInterface::access().
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     $method = $request->getMethod();
     $cookie = $request->cookies->get(session_name(), FALSE);
     // This check only applies if
@@ -50,7 +51,7 @@ public function access(Route $route, Request $request) {
     // 2. the user was successfully authenticated and
     // 3. the request comes with a session cookie.
     if (!in_array($method, array('GET', 'HEAD', 'OPTIONS', 'TRACE'))
-      && $GLOBALS['user']->isAuthenticated()
+      && $account->isAuthenticated()
       && $cookie
     ) {
       $csrf_token = $request->headers->get('X-CSRF-Token');
diff --git a/core/modules/shortcut/lib/Drupal/shortcut/Access/LinkDeleteAccessCheck.php b/core/modules/shortcut/lib/Drupal/shortcut/Access/LinkDeleteAccessCheck.php
index 6fad35c..ab3931e 100644
--- a/core/modules/shortcut/lib/Drupal/shortcut/Access/LinkDeleteAccessCheck.php
+++ b/core/modules/shortcut/lib/Drupal/shortcut/Access/LinkDeleteAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\shortcut\Access;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -26,7 +27,7 @@ public function appliesTo() {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     $menu_link = $request->attributes->get('menu_link');
     $set_name = str_replace('shortcut-', '', $menu_link['menu_name']);
     if ($shortcut_set = shortcut_set_load($set_name)) {
diff --git a/core/modules/system/lib/Drupal/system/Access/CronAccessCheck.php b/core/modules/system/lib/Drupal/system/Access/CronAccessCheck.php
index a0cc981..d9d7089 100644
--- a/core/modules/system/lib/Drupal/system/Access/CronAccessCheck.php
+++ b/core/modules/system/lib/Drupal/system/Access/CronAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\system\Access;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -26,7 +27,7 @@ public function appliesTo() {
   /**
    * Implements AccessCheckInterface::access().
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     $key = $request->attributes->get('key');
     if ($key != \Drupal::state()->get('system.cron_key')) {
       watchdog('cron', 'Cron could not run because an invalid key was used.', array(), WATCHDOG_NOTICE);
diff --git a/core/modules/system/tests/modules/router_test/lib/Drupal/router_test/Access/DefinedTestAccessCheck.php b/core/modules/system/tests/modules/router_test/lib/Drupal/router_test/Access/DefinedTestAccessCheck.php
index f2cc4d9..a3e1200 100644
--- a/core/modules/system/tests/modules/router_test/lib/Drupal/router_test/Access/DefinedTestAccessCheck.php
+++ b/core/modules/system/tests/modules/router_test/lib/Drupal/router_test/Access/DefinedTestAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\router_test\Access;
 
 use Drupal\Core\Access\AccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
@@ -26,7 +27,7 @@ public function applies(Route $route) {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     if ($route->getRequirement('_test_access') === 'TRUE') {
       return static::ALLOW;
     }
diff --git a/core/modules/system/tests/modules/router_test/lib/Drupal/router_test/Access/TestAccessCheck.php b/core/modules/system/tests/modules/router_test/lib/Drupal/router_test/Access/TestAccessCheck.php
index f615600..14245f6 100644
--- a/core/modules/system/tests/modules/router_test/lib/Drupal/router_test/Access/TestAccessCheck.php
+++ b/core/modules/system/tests/modules/router_test/lib/Drupal/router_test/Access/TestAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\router_test\Access;
 
 use Drupal\Core\Access\AccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -26,7 +27,7 @@ public function applies(Route $route) {
   /**
    * Implements AccessCheckInterface::access().
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     // No opinion, so other access checks should decide if access should be
     // allowed or not.
     return NULL;
diff --git a/core/modules/taxonomy/lib/Drupal/taxonomy/Access/TaxonomyTermCreateAccess.php b/core/modules/taxonomy/lib/Drupal/taxonomy/Access/TaxonomyTermCreateAccess.php
index b6305e6..b4aaab4 100644
--- a/core/modules/taxonomy/lib/Drupal/taxonomy/Access/TaxonomyTermCreateAccess.php
+++ b/core/modules/taxonomy/lib/Drupal/taxonomy/Access/TaxonomyTermCreateAccess.php
@@ -8,6 +8,7 @@
 namespace Drupal\taxonomy\Access;
 
 use Drupal\Core\Entity\EntityCreateAccessCheck;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
@@ -24,7 +25,7 @@ class TaxonomyTermCreateAccess extends EntityCreateAccessCheck {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     $entity_type = $route->getRequirement($this->requirementsKey);
     if ($vocabulary = $request->attributes->get('taxonomy_vocabulary')) {
       return $this->entityManager->getAccessController($entity_type)->createAccess($vocabulary->id());
diff --git a/core/modules/toolbar/lib/Drupal/toolbar/Access/SubtreeAccess.php b/core/modules/toolbar/lib/Drupal/toolbar/Access/SubtreeAccess.php
index f61add9..9931175 100644
--- a/core/modules/toolbar/lib/Drupal/toolbar/Access/SubtreeAccess.php
+++ b/core/modules/toolbar/lib/Drupal/toolbar/Access/SubtreeAccess.php
@@ -8,6 +8,7 @@
 namespace Drupal\toolbar\Access;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
@@ -26,9 +27,9 @@ public function appliesTo() {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     $hash = $request->get('hash');
-    if (user_access('access toolbar') && ($hash == _toolbar_get_subtree_hash())) {
+    if ($account->hasPermission('access toolbar') && ($hash == _toolbar_get_subtree_hash())) {
       return TRUE;
     }
     else {
diff --git a/core/modules/user/lib/Drupal/user/Access/LoginStatusCheck.php b/core/modules/user/lib/Drupal/user/Access/LoginStatusCheck.php
index de92fc4..da59f07 100644
--- a/core/modules/user/lib/Drupal/user/Access/LoginStatusCheck.php
+++ b/core/modules/user/lib/Drupal/user/Access/LoginStatusCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\user\Access;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -26,8 +27,8 @@ public function appliesTo() {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
-    return (bool) $GLOBALS['user']->id();
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
+    return $account->isAuthenticated();
   }
 
 }
diff --git a/core/modules/user/lib/Drupal/user/Access/PermissionAccessCheck.php b/core/modules/user/lib/Drupal/user/Access/PermissionAccessCheck.php
index f175653..d75b5a6 100644
--- a/core/modules/user/lib/Drupal/user/Access/PermissionAccessCheck.php
+++ b/core/modules/user/lib/Drupal/user/Access/PermissionAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\user\Access;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -26,11 +27,9 @@ public function appliesTo() {
   /**
    * Implements AccessCheckInterface::access().
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     $permission = $route->getRequirement('_permission');
-    // @todo Replace user_access() with a correctly injected and session-using
-    //   alternative.
-    // If user_access() fails, return NULL to give other checks a chance.
-    return user_access($permission) ? static::ALLOW : static::DENY;
+    // If the access check fails, return NULL to give other checks a chance.
+    return $account->hasPermission($permission) ? static::ALLOW : static::DENY;
   }
 }
diff --git a/core/modules/user/lib/Drupal/user/Access/RegisterAccessCheck.php b/core/modules/user/lib/Drupal/user/Access/RegisterAccessCheck.php
index a7e3933..7760eff 100644
--- a/core/modules/user/lib/Drupal/user/Access/RegisterAccessCheck.php
+++ b/core/modules/user/lib/Drupal/user/Access/RegisterAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\user\Access;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -26,7 +27,7 @@ public function appliesTo() {
   /**
    * Implements AccessCheckInterface::access().
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     return user_is_anonymous() && (config('user.settings')->get('register') != USER_REGISTER_ADMINISTRATORS_ONLY);
   }
 }
diff --git a/core/modules/user/lib/Drupal/user/Access/RoleAccessCheck.php b/core/modules/user/lib/Drupal/user/Access/RoleAccessCheck.php
index 5485a9b..94021b8 100644
--- a/core/modules/user/lib/Drupal/user/Access/RoleAccessCheck.php
+++ b/core/modules/user/lib/Drupal/user/Access/RoleAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\user\Access;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
@@ -30,7 +31,7 @@ public function appliesTo() {
   /**
    * {@inheritdoc}
    */
-  public function access(Route $route, Request $request) {
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
     // Requirements just allow strings, so this might be a comma separated list.
     $rid_string = $route->getRequirement('_role');
 
diff --git a/core/modules/views/lib/Drupal/views/ViewsAccessCheck.php b/core/modules/views/lib/Drupal/views/ViewsAccessCheck.php
index 8d6c962..44c42f7 100644
--- a/core/modules/views/lib/Drupal/views/ViewsAccessCheck.php
+++ b/core/modules/views/lib/Drupal/views/ViewsAccessCheck.php
@@ -8,6 +8,7 @@
 namespace Drupal\views;
 
 use Drupal\Core\Access\StaticAccessCheckInterface;
+use Drupal\Core\Session\AccountInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Route;
 
@@ -28,8 +29,8 @@ public function appliesTo() {
   /**
    * Implements AccessCheckInterface::applies().
    */
-  public function access(Route $route, Request $request) {
-    $access = user_access('access all views');
+  public function access(Route $route, Request $request, AccountInterface $account = NULL) {
+    $access = $account->hasPermission('access all views');
 
     return $access ?: NULL;
   }