Add login screen locale and input method device policies

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 e3ba5b9c9bdbc47c13ef25d54b2efd61f9660d8d..3e250babe6a1c6a3e47ada775e721790f098582f 100644
--- a/ash/common/system/tray/system_tray_delegate.cc
+++ b/ash/common/system/tray/system_tray_delegate.cc
@@ -86,6 +86,10 @@ void SystemTrayDelegate::GetAvailableIMEList(IMEInfoList* list) {}
 
 void SystemTrayDelegate::GetCurrentIMEProperties(IMEPropertyInfoList* list) {}
 
+base::string16 SystemTrayDelegate::GetIMEManagedMessage() {
+  return base::string16();
+}
+
 void SystemTrayDelegate::SwitchIME(const std::string& ime_id) {}
 
 void SystemTrayDelegate::ActivateIMEProperty(const std::string& key) {}