Allow cross-origin cssRules access to CORS-fetched stylesheet.

LayoutTests/http/tests/security/resources/green-if-cors-credentialed.php

Index: LayoutTests/http/tests/security/resources/green-if-cors-credentialed.php
diff --git a/LayoutTests/http/tests/security/resources/webaudio/media-element-cross-origin-allow.php b/LayoutTests/http/tests/security/resources/green-if-cors-credentialed.php
similarity index 55%
copy from LayoutTests/http/tests/security/resources/webaudio/media-element-cross-origin-allow.php
copy to LayoutTests/http/tests/security/resources/green-if-cors-credentialed.php
index 3fa058ceeb005431eff7e2e25aa1c5a24663ba98..2c8a1bc01af68f2931538446e2beb6788ad1e3f5 100644
--- a/LayoutTests/http/tests/security/resources/webaudio/media-element-cross-origin-allow.php
+++ b/LayoutTests/http/tests/security/resources/green-if-cors-credentialed.php
@@ -1,16 +1,14 @@
 <?php
-
-if (isset($_GET['with_credentials'])) {
-    header("Access-Control-Allow-Origin: http://127.0.0.1:8000");
+if (isset($_SERVER['HTTP_ORIGIN']) && $_COOKIE['cookie'] != '') {
+    header("Access-Control-Allow-Origin: *");
     header("Access-Control-Allow-Credentials: true");
+    $name = 'green-background.css';
 } else {
-    header("Access-Control-Allow-Origin: *");
+    $name = 'red-background.css';
 }
 
-$name = 'laughter.wav';
 $fp = fopen($name, 'rb');
-
-header("Content-Type: audio/x-wav");
+header("Content-Type: text/css");
 header("Content-Length: " . filesize($name));
 
 fpassthru($fp);