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

chrome/browser/chromeos/login/app_launch_signin_screen.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/login/app_launch_signin_screen.h"
 
 #include "base/values.h"
 #include "chrome/browser/chromeos/login/help_app_launcher.h"
 #include "chrome/browser/chromeos/login/login_utils.h"
 #include "chrome/browser/chromeos/login/screens/user_selection_screen.h"
@@ skipping 44 matching lines @@
   }
 }
 
 // static
 void AppLaunchSigninScreen::SetUserManagerForTesting(
     UserManager* user_manager) {
   test_user_manager_ = user_manager;
 }
 
 UserManager* AppLaunchSigninScreen::GetUserManager() {
-  return test_user_manager_ ? test_user_manager_ : UserManager::Get();
+  return test_user_manager_ ? test_user_manager_ : GetUserManager();
 }
 
 void AppLaunchSigninScreen::CancelPasswordChangedFlow() {
   NOTREACHED();
 }
 
 void AppLaunchSigninScreen::CancelUserAdding() {
   NOTREACHED();
 }
 
@@ skipping 134 matching lines @@
     ScreenlockBridge::LockHandler::AuthType auth_type) {
   return;
 }
 
 ScreenlockBridge::LockHandler::AuthType AppLaunchSigninScreen::GetAuthType(
     const std::string& username) const {
   return ScreenlockBridge::LockHandler::OFFLINE_PASSWORD;
 }
 
 }  // namespace chromeos