Show realm in device owner notice

ash/common/system/tray/system_tray_delegate.cc

Index: ash/common/system/tray/system_tray_delegate.cc
diff --git a/ash/common/system/tray/system_tray_delegate.cc b/ash/common/system/tray/system_tray_delegate.cc
index b86b08546b1d5fb6032e11746332efe39a464aa7..2a38cc6cb94d425f2c8773071df2cda2fed35301 100644
--- a/ash/common/system/tray/system_tray_delegate.cc
+++ b/ash/common/system/tray/system_tray_delegate.cc
@@ -38,6 +38,10 @@ std::string SystemTrayDelegate::GetEnterpriseDomain() const {
   return std::string();
 }
 
+std::string SystemTrayDelegate::GetEnterpriseRealm() const {
+  return std::string();
+}
+
 base::string16 SystemTrayDelegate::GetEnterpriseMessage() const {
   return base::string16();
 }