Tame the proliferation of UserContext constructors

chrome/browser/chromeos/extensions/screenlock_private_apitest.cc

 // Copyright 2013 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 "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chromeos/login/lock/screen_locker.h"
 #include "chrome/browser/chromeos/login/users/user.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "components/signin/core/browser/signin_manager.h"
@@ skipping 41 matching lines @@
 
   // content::NotificationObserver override:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE {
     const std::string& content = *content::Details<std::string>(details).ptr();
     if (content == kAttemptClickAuthMessage) {
       chromeos::ScreenLocker* locker = GetScreenLocker();
       const chromeos::UserList& users = locker->users();
       EXPECT_GE(1u, users.size());
-      GetScreenLocker()->Authenticate(
-          chromeos::UserContext(users[0]->email(), "", ""));
+      GetScreenLocker()->Authenticate(chromeos::UserContext(users[0]->email()));
     }
   }
 
   content::NotificationRegistrar registrar_;
 };
 
 IN_PROC_BROWSER_TEST_F(ScreenlockPrivateApiTest, LockUnlock) {
   ASSERT_TRUE(RunExtensionTest("screenlock_private/lock_unlock")) << message_;
 }
 
 IN_PROC_BROWSER_TEST_F(ScreenlockPrivateApiTest, AuthType) {
   ASSERT_TRUE(RunExtensionTest("screenlock_private/auth_type")) << message_;
 }
 
 }  // namespace extensions