Replace chromeos::UserManager::Get() with chromeos::GetUserManager().

chrome/browser/chromeos/system/automatic_reboot_manager.cc

Index: chrome/browser/chromeos/system/automatic_reboot_manager.cc
diff --git a/chrome/browser/chromeos/system/automatic_reboot_manager.cc b/chrome/browser/chromeos/system/automatic_reboot_manager.cc
index b5370b7d9c872ff7f935b1ed87c7201220ab970e..131b14b308bb2b1135fb2e3fe68e2caf9da76e80 100644
--- a/chrome/browser/chromeos/system/automatic_reboot_manager.cc
+++ b/chrome/browser/chromeos/system/automatic_reboot_manager.cc
@@ -171,7 +171,7 @@ AutomaticRebootManager::AutomaticRebootManager(
   // If no user is logged in, a reboot may be performed whenever the user is
   // idle. Start listening for user activity to determine whether the user is
   // idle or not.
-  if (!UserManager::Get()->IsUserLoggedIn()) {
+  if (!GetUserManager()->IsUserLoggedIn()) {
     if (ash::Shell::HasInstance())
       ash::Shell::GetInstance()->user_activity_detector()->AddObserver(this);
     notification_registrar_.Add(this, chrome::NOTIFICATION_LOGIN_USER_CHANGED,
@@ -262,7 +262,7 @@ void AutomaticRebootManager::Observe(
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   if (type == chrome::NOTIFICATION_APP_TERMINATING) {
-    if (UserManager::Get()->IsUserLoggedIn()) {
+    if (GetUserManager()->IsUserLoggedIn()) {
       // The browser is terminating during a session, either because the session
       // is ending or because the browser is being restarted.
       MaybeReboot(true);
@@ -395,7 +395,7 @@ void AutomaticRebootManager::MaybeReboot(bool ignore_session) {
   // * A session is in progress and |ignore_session| is not set.
   if (!reboot_requested_ ||
       (login_screen_idle_timer_ && login_screen_idle_timer_->IsRunning()) ||
-      (!ignore_session && UserManager::Get()->IsUserLoggedIn())) {
+      (!ignore_session && GetUserManager()->IsUserLoggedIn())) {
     return;
   }
 
@@ -404,8 +404,8 @@ void AutomaticRebootManager::MaybeReboot(bool ignore_session) {
 
 void AutomaticRebootManager::Reboot() {
   // If a non-kiosk-app session is in progress, do not reboot.
-  if (UserManager::Get()->IsUserLoggedIn() &&
-      !UserManager::Get()->IsLoggedInAsKioskApp()) {
+  if (GetUserManager()->IsUserLoggedIn() &&
+      !GetUserManager()->IsLoggedInAsKioskApp()) {
     return;
   }