Replace SetAuthenticatedUsername with SetAuthenticatedAccountId.

chrome/browser/chromeos/login/login_browsertest.cc

Index: chrome/browser/chromeos/login/login_browsertest.cc
diff --git a/chrome/browser/chromeos/login/login_browsertest.cc b/chrome/browser/chromeos/login/login_browsertest.cc
index 85880b122f529d4518e1c7aca1aedb9cb1ac17c5..4c387b8f7ddf0b3dca75a77fce8cd99ae7981cc6 100644
--- a/chrome/browser/chromeos/login/login_browsertest.cc
+++ b/chrome/browser/chromeos/login/login_browsertest.cc
@@ -38,6 +38,7 @@ using ::testing::Return;
 
 namespace {
 
+const char kGaiaId[] = "12345";
 const char kTestUser[] = "test-user@gmail.com";
 const char kPassword[] = "password";
 
@@ -231,6 +232,7 @@ IN_PROC_BROWSER_TEST_F(LoginTest, GaiaAuthOffline) {
   StartGaiaAuthOffline();
 
   chromeos::UserContext user_context(kTestUser);
+  user_context.SetGaiaID(kGaiaId);
   user_context.SetKey(chromeos::Key(kPassword));
   SetExpectedCredentials(user_context);