[feature/template-engine] Use template engine class in bbcode class.

PHPBB3-9726

phpBB/includes/template/template.php

@@ -493,4 +493,17 @@ class phpbb_template
 		}
 		include($file);
 	}
+
+	/**
+	* Retrieves the template locator object.
+	*
+	* This function is public for the benefit of bbcode implementation.
+	* It should not be considered part of template class's public API.
+	*
+	* @return phpbb_template_locator Template locator for this template
+	*/
+	public function _get_locator()
+	{
+		return $this->locator;
+	}
 }