[cros] Fake a stub user login when no --login-manager and --login-user are given.

chrome/browser/chromeos/login/user_manager_unittest.cc

 // Copyright (c) 2012 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 <cstdlib>
 #include <cstring>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/values.h"
@@ skipping 44 matching lines @@
     // Populate the stub DeviceSettingsProvider with valid values.
     SetDeviceSettings(false, "");
 
     // Register an in-memory local settings instance.
     local_state_.reset(new TestingPrefService);
     reinterpret_cast<TestingBrowserProcess*>(g_browser_process)
         ->SetLocalState(local_state_.get());
     UserManager::RegisterPrefs(local_state_.get());
 
     old_user_manager_ = UserManager::Get();
-    // A stub user is automatically logged in by UserManager. Reset this.
     ResetUserManager();
   }
 
   virtual void TearDown() {
     // Unregister the in-memory local settings instance.
     reinterpret_cast<TestingBrowserProcess*>(g_browser_process)
         ->SetLocalState(0);
 
     // Restore the real DeviceSettingsProvider.
     EXPECT_TRUE(
@@ skipping 18 matching lines @@
         owner_email_;
   }
 
   void SetUserManagerOwnerEmail(const std::string& owner_email) {
     reinterpret_cast<UserManagerImpl*>(UserManager::Get())->
         owner_email_ = owner_email;
   }
 
   void ResetUserManager() {
     user_manager_impl.reset(new UserManagerImpl());
-    // Clean up the stub user that gets created in the UserManagerImpl
-    // constructor.
-    delete user_manager_impl->logged_in_user_;
-    user_manager_impl->logged_in_user_ = NULL;
-    user_manager_impl->is_current_user_ephemeral_ = false;
     UserManager::Set(user_manager_impl.get());
   }
 
   void SetDeviceSettings(bool ephemeral_users_enabled,
                          const std::string &owner) {
     base::FundamentalValue
         ephemeral_users_enabled_value(ephemeral_users_enabled);
     stub_settings_provider_.Set(kAccountsPrefEphemeralUsersEnabled,
         ephemeral_users_enabled_value);
     base::StringValue owner_value(owner);
@@ skipping 63 matching lines @@
   ResetUserManager();
   UserManager::Get()->UserLoggedIn("user0@invalid.domain", true);
   ResetUserManager();
 
   const UserList* users = &UserManager::Get()->GetUsers();
   EXPECT_TRUE(users->size() == 1);
   EXPECT_EQ((*users)[0]->email(), "owner@invalid.domain");
 }
 
 }  // namespace chromeos