ash: Replace SessionStateDelegate::CanAddUserToMultiProfile

chrome/browser/ui/ash/session_state_delegate_chromeos.cc

 // Copyright (c) 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/ui/ash/session_state_delegate_chromeos.h"
 
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/session/session_state_observer.h"
 #include "ash/content/shell_content_state.h"
 #include "base/bind.h"
@@ skipping 59 matching lines @@
   // actually added to a session.
   // TODO(nkostylev): Adjust this limitation based on device capabilites.
   // http://crbug.com/230865
   return 10;
 }
 
 int SessionStateDelegateChromeos::NumberOfLoggedInUsers() const {
   return user_manager::UserManager::Get()->GetLoggedInUsers().size();
 }
 
-bool SessionStateDelegateChromeos::CanAddUserToMultiProfile(
-    AddUserError* error) const {
+ash::AddUserSessionPolicy
+SessionStateDelegateChromeos::GetAddUserSessionPolicy() const {
   if (user_manager::UserManager::Get()
           ->GetUsersAllowedForMultiProfile()
           .size() == 0) {
-    if (error)
-      *error = ADD_USER_ERROR_OUT_OF_USERS;
-    return false;
+    return ash::AddUserSessionPolicy::ERROR_NO_ELIGIBLE_USERS;
   }
-  return SessionStateDelegate::CanAddUserToMultiProfile(error);
+  return SessionStateDelegate::GetAddUserSessionPolicy();
 }
 
 bool SessionStateDelegateChromeos::IsActiveUserSessionStarted() const {
   return session_manager::SessionManager::Get() &&
          session_manager::SessionManager::Get()->IsSessionStarted();
 }
 
 bool SessionStateDelegateChromeos::CanLockScreen() const {
   const user_manager::UserList unlock_users =
       user_manager::UserManager::Get()->GetUnlockUsers();
@@ skipping 183 matching lines @@
 }
 
 void DoSwitchUser(const AccountId& account_id) {
   user_manager::UserManager::Get()->SwitchActiveUser(account_id);
 }
 
 void SessionStateDelegateChromeos::TryToSwitchUser(
     const AccountId& account_id) {
   TrySwitchingActiveUser(base::Bind(&DoSwitchUser, account_id));
 }