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diff --git a/vendor/drupal/drupal-extension/src/Drupal/DrupalExtension/Compiler/DriverPass.php b/vendor/drupal/drupal-extension/src/Drupal/DrupalExtension/Compiler/DriverPass.php
new file mode 100644
index 000000000..6fc862a52
--- /dev/null
+++ b/vendor/drupal/drupal-extension/src/Drupal/DrupalExtension/Compiler/DriverPass.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace Drupal\DrupalExtension\Compiler;
+
+use Symfony\Component\DependencyInjection\Reference,
+    Symfony\Component\DependencyInjection\ContainerBuilder,
+    Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+
+/**
+ * Drupal\DrupalExtension container compilation pass.
+ */
+class DriverPass implements CompilerPassInterface {
+  /**
+   * Register Drupal drivers.
+   */
+  public function process(ContainerBuilder $container) {
+    if (!$container->hasDefinition('drupal.drupal')) {
+      return;
+    }
+
+    $drupalDefinition = $container->getDefinition('drupal.drupal');
+    foreach ($container->findTaggedServiceIds('drupal.driver') as $id => $attributes) {
+      foreach ($attributes as $attribute) {
+        if (isset($attribute['alias']) && $name = $attribute['alias']) {
+          $drupalDefinition->addMethodCall(
+            'registerDriver', array($name, new Reference($id))
+          );
+        }
+      }
+
+      // If this is Drupal Driver, then a core controller needs to be
+      // instantiated as well.
+      if ('drupal.driver.drupal' === $id) {
+        $drupalDriverDefinition = $container->getDefinition($id);
+        $availableCores = array();
+        foreach ($container->findTaggedServiceIds('drupal.core') as $coreId => $coreAttributes) {
+          foreach ($coreAttributes as $attribute) {
+            if (isset($attribute['alias']) && $name = $attribute['alias']) {
+              $availableCores[$name] = $container->getDefinition($coreId);
+            }
+          }
+        }
+        $drupalDriverDefinition->addMethodCall(
+          'setCore', array($availableCores)
+        );
+      }
+    }
+
+    $drupalDefinition->addMethodCall(
+      'setDefaultDriverName', array($container->getParameter('drupal.drupal.default_driver'))
+    );
+  }
+}