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

chrome/browser/chromeos/first_run/drive_first_run_controller.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/chromeos/first_run/drive_first_run_controller.h"
 
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 346 matching lines @@
   if (!started_) {
     started_ = true;
     initial_delay_timer_.Start(
       FROM_HERE,
       base::TimeDelta::FromSeconds(initial_delay_secs_),
       this,
       &DriveFirstRunController::EnableOfflineMode);
     return;
   }
 
-  if (!UserManager::Get()->IsLoggedInAsRegularUser()) {
+  if (!GetUserManager()->IsLoggedInAsRegularUser()) {
     LOG(ERROR) << "Attempting to enable offline access "
                   "but not logged in a regular user.";
     OnOfflineInit(false, OUTCOME_WRONG_USER_TYPE);
     return;
   }
 
   ExtensionService* extension_service =
       extensions::ExtensionSystem::Get(profile_)->extension_service();
   if (!extension_service->GetExtensionById(drive_hosted_app_id_, false)) {
     LOG(WARNING) << "Drive app is not installed.";
@@ skipping 92 matching lines @@
           base::UTF8ToUTF16(extension->name()),
           message_center::NotifierId(message_center::NotifierId::APPLICATION,
                                      kDriveHostedAppId),
           data,
           new DriveOfflineNotificationDelegate(profile_)));
   notification->set_priority(message_center::LOW_PRIORITY);
   message_center::MessageCenter::Get()->AddNotification(notification.Pass());
 }
 
 }  // namespace chromeos