Providing more information on why certain users can't be added to multi-profile

chrome/browser/ui/ash/session_state_delegate_chromeos.cc

Index: chrome/browser/ui/ash/session_state_delegate_chromeos.cc
diff --git a/chrome/browser/ui/ash/session_state_delegate_chromeos.cc b/chrome/browser/ui/ash/session_state_delegate_chromeos.cc
index 286e2db3c549ad299a0774ea419e8f365ccdc747..96dd889088be26f739cd0eb5c7adc3eb7fa00737 100644
--- a/chrome/browser/ui/ash/session_state_delegate_chromeos.cc
+++ b/chrome/browser/ui/ash/session_state_delegate_chromeos.cc
@@ -11,6 +11,7 @@
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/chromeos/login/lock/screen_locker.h"
 #include "chrome/browser/chromeos/login/ui/user_adding_screen.h"
+#include "chrome/browser/chromeos/login/users/multi_profile_user_controller.h"
 #include "chrome/browser/chromeos/login/users/user_manager.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/profiles/profile.h"
@@ -207,6 +208,17 @@ void SessionStateDelegateChromeos::CycleActiveUser(CycleUser cycle_user) {
   chromeos::UserManager::Get()->SwitchActiveUser(user_id);
 }
 
+bool SessionStateDelegateChromeos::IsMultiProfileAllowedByPrimaryUserPolicy()
+    const {
+  chromeos::UserManager* user_manager = chromeos::UserManager::Get();
+  CHECK(user_manager);
+  chromeos::MultiProfileUserController* multi_controller =
+      user_manager->GetMultiProfileUserController();
+  DCHECK(multi_controller);
+  return multi_controller->GetPrimaryUserPolicy() ==
+         chromeos::MultiProfileUserController::ALLOWED;
+}
+
 void SessionStateDelegateChromeos::AddSessionStateObserver(
     ash::SessionStateObserver* observer) {
   session_state_observer_list_.AddObserver(observer);