When a user logs into sync, the appropriate cookies are retrieved so that

chrome/browser/chromeos/login/cookie_fetcher_unittest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <errno.h>
 
 #include <string>
 
 #include "chrome/browser/chromeos/login/client_login_response_handler.h"
 #include "chrome/browser/chromeos/login/cookie_fetcher.h"
@@ skipping 164 matching lines @@
   std::string input("a\nb\n");
   std::string expected("a&b&");
   expected.append(ClientLoginResponseHandler::kService);
 
   scoped_ptr<URLFetcher> fetcher(handler.Handle(input, NULL));
   EXPECT_EQ(expected, handler.payload());
 }
 
 TEST_F(CookieFetcherTest, IssueResponseHandlerTest) {
   IssueResponseHandler handler(NULL);
-  std::string input("a\n");
-  std::string expected(GaiaUrls::GetInstance()->token_auth_url());
-  expected.append(input);
+  std::string expected(IssueResponseHandler::BuildTokenAuthUrlWithToken(
+      std::string("a\n")));
 
-  scoped_ptr<URLFetcher> fetcher(handler.Handle(input, NULL));
+  scoped_ptr<URLFetcher> fetcher(handler.Handle(std::string("a\n"), NULL));
   EXPECT_EQ(expected, handler.token_url());
 }
 
 }  // namespace chromeos