Rename fetch layout tests.

LayoutTests/http/tests/fetch/script-tests/thorough/cookie.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');
 }
 
 // This test assumes TEST_TARGETS are executed in order and sequentially.
 var TEST_TARGETS = [];
 
 // cookieCheckX checks the cookies sent in the request.
 // SetCookie=cookieX indicates to set cookies in the response.
 // So a SetCookie=cookieX indication may affect the next cookieCheckX,
 // but not the cookieCheckX in the same request.
 
 // Test same-origin requests.
-// The same set of requests are also in fetch-access-control-cookie-no-cors.js,
+// The same set of requests are also in cookie-no-cors.js,
 // with different mode (no-cors).
 ['same-origin', 'cors'].forEach(function(mode) {
     // At first, cookie is cookie=cookie1.
     TEST_TARGETS.push(
       // Set cookie=cookieA by credentials=same-origin.
       [BASE_URL + 'mode=' + mode + '&credentials=same-origin&SetCookie=cookieA',
        [fetchResolved, hasBody], [cookieCheck1]],
 
       // Set cookie=cookieB by credentials=include.
       [BASE_URL + 'mode=' + mode + '&credentials=include&SetCookie=cookieB',
@@ skipping 121 matching lines @@
   [OTHER_BASE_URL +
    'mode=same-origin&credentials=same-origin&SetCookie=cookieC',
    [fetchRejected]],
   [OTHER_CHECK_URL + 'otherCheck13', [fetchResolved], [cookieCheckB]]
 );
 
 if (self.importScripts) {
   executeTests(TEST_TARGETS);
   done();
 }