Fixed suggesting adding more users into multi-profile session when we don't have more

chrome/browser/ui/ash/session_state_delegate_views.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_views.h"
 
 #include "base/logging.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/user_manager/empty_user_info.h"
@@ skipping 18 matching lines @@
 }
 
 int SessionStateDelegate::GetMaximumNumberOfLoggedInUsers() const {
   return 3;
 }
 
 int SessionStateDelegate::NumberOfLoggedInUsers() const {
   return 1;
 }
 
+int SessionStateDelegate::GetNumberOfUsersAdmittedForMultiProfile() const {
+  return GetMaximumNumberOfLoggedInUsers() - NumberOfLoggedInUsers();
+}
+
 bool SessionStateDelegate::IsActiveUserSessionStarted() const {
   return true;
 }
 
 bool SessionStateDelegate::CanLockScreen() const {
   return false;
 }
 
 bool SessionStateDelegate::IsScreenLocked() const {
   return false;
@@ skipping 48 matching lines @@
 
 void SessionStateDelegate::AddSessionStateObserver(
     ash::SessionStateObserver* observer) {
   NOTIMPLEMENTED();
 }
 
 void SessionStateDelegate::RemoveSessionStateObserver(
     ash::SessionStateObserver* observer) {
   NOTIMPLEMENTED();
 }