cros: Move IsUserSupervised and IsUserChild off SystemTrayDelegate

ash/system/tray/system_tray_delegate.cc

Index: ash/system/tray/system_tray_delegate.cc
diff --git a/ash/system/tray/system_tray_delegate.cc b/ash/system/tray/system_tray_delegate.cc
index 10669a0a5e247c766fa57f3cfa42f5529ca0eb96..7868d10948541229af8d1b0bbfe535d361a313d5 100644
--- a/ash/system/tray/system_tray_delegate.cc
+++ b/ash/system/tray/system_tray_delegate.cc
@@ -43,14 +43,6 @@ base::string16 SystemTrayDelegate::GetSupervisedUserMessage() const {
   return base::string16();
 }
 
-bool SystemTrayDelegate::IsUserSupervised() const {
-  return false;
-}
-
-bool SystemTrayDelegate::IsUserChild() const {
-  return false;
-}
-
 void SystemTrayDelegate::ShowEnterpriseInfo() {}
 
 void SystemTrayDelegate::ShowUserLogin() {}