Rename fetch layout tests.

LayoutTests/http/tests/fetch/workers/thorough/cors-preflight.html

Index: LayoutTests/http/tests/fetch/workers/thorough/cors-preflight.html
diff --git a/LayoutTests/http/tests/fetch/workers/fetch-access-control-cookie.html b/LayoutTests/http/tests/fetch/workers/thorough/cors-preflight.html
similarity index 79%
rename from LayoutTests/http/tests/fetch/workers/fetch-access-control-cookie.html
rename to LayoutTests/http/tests/fetch/workers/thorough/cors-preflight.html
index 72233314c790638ae4fb34e088a5335f70014842..a2c8bbd2ef2d751e6edfa1eaf5acbbab9dd8e66d 100644
--- a/LayoutTests/http/tests/fetch/workers/fetch-access-control-cookie.html
+++ b/LayoutTests/http/tests/fetch/workers/thorough/cors-preflight.html
@@ -9,7 +9,7 @@
 <script>
 function start(t) {
   fetch_tests_from_worker(
-    new Worker('../script-tests/fetch-access-control-cookie.js?'));
+    new Worker('/fetch/script-tests/thorough/cors-preflight.js?'));
   t.done();
 }
 function init(test) {
@@ -17,5 +17,5 @@ function init(test) {
     .then(function() {return login_https(test);});
 }
 </script>
-<script src = "../resources/init.js"></script>
+<script src = "/fetch/resources/init.js"></script>
 </body>