[Test] [Fetch][XHR] Patch for testing Location header in Preflight Response

LayoutTests/http/tests/serviceworker/resources/fetch-access-control.php

Index: LayoutTests/http/tests/serviceworker/resources/fetch-access-control.php
diff --git a/LayoutTests/http/tests/serviceworker/resources/fetch-access-control.php b/LayoutTests/http/tests/serviceworker/resources/fetch-access-control.php
index ca767d3c33a47754bdd01662f776c30d223999e3..44d803791e61d6d15d3870b61444fb8ca0c0425d 100644
--- a/LayoutTests/http/tests/serviceworker/resources/fetch-access-control.php
+++ b/LayoutTests/http/tests/serviceworker/resources/fetch-access-control.php
@@ -26,6 +26,10 @@ if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS' && isset($_GET['PreflightTest'])) {
     header("HTTP/1.1 {$_GET['PreflightTest']}");
 }
 
+if (isset($_GET[$prefix . 'Redirect'])) {
+  header('Location: ' . $_GET[$prefix . 'Redirect']);
+}
+
 if (isset($_GET[$prefix . 'ACAOrigin'])) {
     $origins = explode(',', $_GET[$prefix . 'ACAOrigin']);
     for ($i = 0; $i < sizeof($origins); ++$i)