We should use UserID object to identify users instead of username.

chrome/browser/policy/schema_registry_service_factory.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/policy/schema_registry_service_factory.h"
 
 #include "base/logging.h"
 #include "chrome/browser/policy/schema_registry_service.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "components/policy/core/common/schema.h"
@@ skipping 32 matching lines @@
   if (!user)
     return NULL;
 
   BrowserPolicyConnectorChromeOS* connector =
       g_browser_process->platform_part()->browser_policy_connector_chromeos();
   DeviceLocalAccountPolicyService* service =
       connector->GetDeviceLocalAccountPolicyService();
   if (!service)
     return NULL;
 
-  return service->GetBrokerForUser(user->email());
+  return service->GetBrokerForUser(user->GetUserID());
 }
 
 }  // namespace
 #endif  // OS_CHROMEOS
 
 // static
 SchemaRegistryServiceFactory* SchemaRegistryServiceFactory::GetInstance() {
   return Singleton<SchemaRegistryServiceFactory>::get();
 }
 
@@ skipping 84 matching lines @@
 
 bool SchemaRegistryServiceFactory::HasTestingFactory(
     content::BrowserContext* context) {
   return false;
 }
 
 void SchemaRegistryServiceFactory::CreateServiceNow(
     content::BrowserContext* context) {}
 
 }  // namespace policy