diff -u b/core/lib/Drupal/Core/Config/ConfigInstaller.php b/core/lib/Drupal/Core/Config/ConfigInstaller.php
--- b/core/lib/Drupal/Core/Config/ConfigInstaller.php
+++ b/core/lib/Drupal/Core/Config/ConfigInstaller.php
@@ -482,11 +482,21 @@
    *   A list of all the currently enabled modules and themes.
    * @param array $all_config
    *   A list of all the active configuration names.
+   * @param array $additional_config
+   *   A list of configuration prospectively to be added to active config.
    *
    * @return bool
    *   TRUE if the dependencies are met, FALSE if not.
    */
-  protected function validateDependencies($config_name, array $data, array $enabled_extensions, array $all_config) {
+  public function validateDependencies($config_name, array $data, array $enabled_extensions = array(), array $all_config = array(), array $additional_config = array()) {
+    if (empty($enabled_extensions)) {
+      $enabled_extensions = $this->getEnabledExtensions();
+    }
+    if (empty($all_config)) {
+      $all_config = $this->getActiveStorages()->listAll();
+    }
+    $all_config = array_merge($all_config, $additional_config);
+
     if (isset($data['dependencies'])) {
       $all_dependencies = $data['dependencies'];
 
@@ -528,14 +538,6 @@
   }
 
   /**
-   * {@inheritdoc}
-   */
-  public function validateDependenciesWrapper($config_name, array $data, array $additional_config) {
-    $all_config = array_merge($this->getActiveStorages()->listAll(), $additional_config);
-    return $this->validateDependencies($config_name, $data, $this->getEnabledExtensions(), $all_config);
-  }
-
-  /**
    * Gets the list of enabled extensions including both modules and themes.
    *
    * @return array
diff -u b/core/lib/Drupal/Core/Config/ConfigInstallerInterface.php b/core/lib/Drupal/Core/Config/ConfigInstallerInterface.php
--- b/core/lib/Drupal/Core/Config/ConfigInstallerInterface.php
+++ b/core/lib/Drupal/Core/Config/ConfigInstallerInterface.php
@@ -119,9 +119,14 @@
    *   Configuration data.
+   * @param array $enabled_extensions
+   *   A list of all the currently enabled modules and themes.
+   * @param array $all_config
+   *   A list of all the active configuration names.
    * @param array $additional_config
-   *   List of configuration names to be considered as present.
+   *   A list of configuration prospectively to be added to active config.
    *
    * @return bool
    *   TRUE if the dependencies are met, FALSE if not.
    */
-  public function validateDependenciesWrapper($config_name, array $data, array $additional_config);
+  public function validateDependencies($config_name, array $data, array $enabled_extensions = array(), array $all_config = array(), array $additional_config = array());
+
 }
diff -u b/core/modules/migrate_drupal/src/Tests/MigrateDrupalTestBase.php b/core/modules/migrate_drupal/src/Tests/MigrateDrupalTestBase.php
--- b/core/modules/migrate_drupal/src/Tests/MigrateDrupalTestBase.php
+++ b/core/modules/migrate_drupal/src/Tests/MigrateDrupalTestBase.php
@@ -57,7 +57,7 @@
     $migration_templates = \Drupal::service('migrate.template_storage')->findTemplatesByTag($version);
     $all_template_names = array_keys($migration_templates);
     foreach ($migration_templates as $template_name => $template) {
-      if ($config_installer->validateDependenciesWrapper($template_name, $template, $all_template_names)) {
+      if ($config_installer->validateDependencies($template_name, $template, array(), array(), $all_template_names)) {
         $migration = Migration::create($template);
         $migration->save();
       }