Adding infrastructure for possibility of changing manager names for the supervised accounts.

ash/system/tray/default_system_tray_delegate.cc

Index: ash/system/tray/default_system_tray_delegate.cc
diff --git a/ash/system/tray/default_system_tray_delegate.cc b/ash/system/tray/default_system_tray_delegate.cc
index fe6681f643f5c407e10d96149edb5045cac7087c..2658f52bd7d54084fa4381786c104456614da820 100644
--- a/ash/system/tray/default_system_tray_delegate.cc
+++ b/ash/system/tray/default_system_tray_delegate.cc
@@ -72,7 +72,9 @@ const base::string16 DefaultSystemTrayDelegate::GetEnterpriseMessage() const {
 
 const std::string
 DefaultSystemTrayDelegate::GetSupervisedUserManager() const {
-  return std::string();
+  if (!IsUserSupervised())
+    return std::string();
+  return "manager@chrome.com";
 }
 
 const base::string16
@@ -87,7 +89,7 @@ const base::string16 DefaultSystemTrayDelegate::GetSupervisedUserMessage()
 }
 
 bool DefaultSystemTrayDelegate::IsUserSupervised() const {
-  return false;
+  return GetUserLoginStatus() == ash::user::LOGGED_IN_SUPERVISED;
 }
 
 void DefaultSystemTrayDelegate::GetSystemUpdateInfo(UpdateInfo* info) const {
@@ -291,4 +293,12 @@ tray::UserAccountsDelegate* DefaultSystemTrayDelegate::GetUserAccountsDelegate(
   return NULL;
 }
 
+void DefaultSystemTrayDelegate::AddCustodianInfoTrayObserver(
+    CustodianInfoTrayObserver* observer) {
+}
+
+void DefaultSystemTrayDelegate::RemoveCustodianInfoTrayObserver(
+    CustodianInfoTrayObserver* observer) {
+}
+
 }  // namespace ash