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

ash/test/test_session_state_delegate.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 "ash/test/test_session_state_delegate.h"
 
 #include <algorithm>
 #include <string>
 
 #include "ash/shell.h"
@@ skipping 209 matching lines @@
       return;
     }
   }
   NOTREACHED() << "Unknown user:" << user_id;
 }
 
 void TestSessionStateDelegate::CycleActiveUser(CycleUser cycle_user) {
   SwitchActiveUser("someone@tray");
 }
 
+SessionStateDelegate::PrimaryUserPolicy
+TestSessionStateDelegate::GetPrimaryUserPolicy() const {
+  return PRIMARY_USER_POLICY_ALLOW;
+}
+
 void TestSessionStateDelegate::AddSessionStateObserver(
     SessionStateObserver* observer) {
 }
 
 void TestSessionStateDelegate::RemoveSessionStateObserver(
     SessionStateObserver* observer) {
 }
 
 }  // namespace test
 }  // namespace ash