This CL replaces user_manager::UserID with AccountId.

chrome/browser/chromeos/system/tray_accessibility_browsertest.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 "ash/magnifier/magnification_controller.h"
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray_accessibility.h"
 #include "ash/system/user/login_status.h"
 #include "ash/test/shell_test_api.h"
@@ skipping 254 matching lines @@
   }
 
   policy::MockConfigurationPolicyProvider provider_;
   MockBrailleController braille_controller_;
 };
 
 IN_PROC_BROWSER_TEST_P(TrayAccessibilityTest, LoginStatus) {
   EXPECT_EQ(ash::user::LOGGED_IN_NONE, GetLoginStatus());
 
   user_manager::UserManager::Get()->UserLoggedIn(
-      "owner@invalid.domain", "owner@invalid.domain", true);
+      AccountId::FromUserEmail("owner@invalid.domain"), "owner@invalid.domain",
+      true);
   user_manager::UserManager::Get()->SessionStarted();
 
   EXPECT_EQ(ash::user::LOGGED_IN_USER, GetLoginStatus());
 }
 
 IN_PROC_BROWSER_TEST_P(TrayAccessibilityTest, ShowTrayIcon) {
   SetLoginStatus(ash::user::LOGGED_IN_NONE);
 
   // Confirms that the icon is invisible before login.
   EXPECT_FALSE(IsTrayIconVisible());
 
   user_manager::UserManager::Get()->UserLoggedIn(
-      "owner@invalid.domain", "owner@invalid.domain", true);
+      AccountId::FromUserEmail("owner@invalid.domain"), "owner@invalid.domain",
+      true);
   user_manager::UserManager::Get()->SessionStarted();
 
   // Confirms that the icon is invisible just after login.
   EXPECT_FALSE(IsTrayIconVisible());
 
   // Toggling spoken feedback changes the visibillity of the icon.
   AccessibilityManager::Get()->EnableSpokenFeedback(
       true, ui::A11Y_NOTIFICATION_NONE);
   EXPECT_TRUE(IsTrayIconVisible());
   AccessibilityManager::Get()->EnableSpokenFeedback(
@@ skipping 44 matching lines @@
   SetShowAccessibilityOptionsInSystemTrayMenu(true);
   AccessibilityManager::Get()->EnableHighContrast(true);
   EXPECT_TRUE(IsTrayIconVisible());
   AccessibilityManager::Get()->EnableHighContrast(false);
   EXPECT_FALSE(IsTrayIconVisible());
 }
 
 IN_PROC_BROWSER_TEST_P(TrayAccessibilityTest, ShowMenu) {
   // Login
   user_manager::UserManager::Get()->UserLoggedIn(
-      "owner@invalid.domain", "owner@invalid.domain", true);
+      AccountId::FromUserEmail("owner@invalid.domain"), "owner@invalid.domain",
+      true);
   user_manager::UserManager::Get()->SessionStarted();
 
   SetShowAccessibilityOptionsInSystemTrayMenu(false);
 
   // Confirms that the menu is hidden.
   EXPECT_FALSE(CanCreateMenuItem());
 
   // Toggling spoken feedback changes the visibillity of the menu.
   AccessibilityManager::Get()->EnableSpokenFeedback(
       true, ui::A11Y_NOTIFICATION_NONE);
@@ skipping 47 matching lines @@
   EXPECT_TRUE(CanCreateMenuItem());
   AccessibilityManager::Get()->EnableHighContrast(false);
   EXPECT_TRUE(CanCreateMenuItem());
   SetMagnifierEnabled(false);
   EXPECT_FALSE(CanCreateMenuItem());
 }
 
 IN_PROC_BROWSER_TEST_P(TrayAccessibilityTest, ShowMenuWithShowMenuOption) {
   // Login
   user_manager::UserManager::Get()->UserLoggedIn(
-      "owner@invalid.domain", "owner@invalid.domain", true);
+      AccountId::FromUserEmail("owner@invalid.domain"), "owner@invalid.domain",
+      true);
   user_manager::UserManager::Get()->SessionStarted();
 
   SetShowAccessibilityOptionsInSystemTrayMenu(true);
 
   // Confirms that the menu is visible.
   EXPECT_TRUE(CanCreateMenuItem());
 
   // The menu remains visible regardless of toggling spoken feedback.
   AccessibilityManager::Get()->EnableSpokenFeedback(
       true, ui::A11Y_NOTIFICATION_NONE);
@@ skipping 469 matching lines @@
   EXPECT_FALSE(IsSettingsShownOnDetailMenu());
   CloseDetailMenu();
 }
 
 INSTANTIATE_TEST_CASE_P(TrayAccessibilityTestInstance,
                         TrayAccessibilityTest,
                         testing::Values(PREF_SERVICE,
                                         POLICY));
 
 }  // namespace chromeos