Rename fetch layout tests.

LayoutTests/http/tests/fetch/script-tests/thorough/cors.js

 if (self.importScripts) {
-  importScripts('../resources/fetch-test-helpers.js');
-  importScripts('../resources/fetch-access-control-util.js');
+  importScripts('/fetch/resources/fetch-test-helpers.js');
+  importScripts('/fetch/resources/thorough-util.js');
 }
 
 // Tests for CORS check and CORS filtered response.
 
 var TEST_TARGETS = [
   // CORS test
 
   [OTHER_BASE_URL + 'mode=same-origin&method=GET', [fetchRejected]],
   [OTHER_BASE_URL + 'mode=same-origin&method=POST', [fetchRejected]],
   [OTHER_BASE_URL + 'mode=same-origin&method=PUT', [fetchRejected]],
@@ skipping 71 matching lines @@
   [OTHER_BASE_URL + 'mode=cors&method=POST&ACAOrigin=' + BASE_ORIGIN +
    '&ACEHeaders=Content-Length, X-ServiceWorker-ServerHeader',
    [fetchResolved, hasContentLength, hasServerHeader, hasBody, typeCors],
    [methodIsPOST]],
 ];
 
 if (self.importScripts) {
   executeTests(TEST_TARGETS);
   done();
 }