Add login screen locale and input method device policies

ash/common/system/tray/system_tray_delegate.h

 // Copyright (c) 2012 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.
 
 #ifndef ASH_COMMON_SYSTEM_TRAY_SYSTEM_TRAY_DELEGATE_H_
 #define ASH_COMMON_SYSTEM_TRAY_SYSTEM_TRAY_DELEGATE_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 123 matching lines @@
 
   // Returns the currently selected IME.
   virtual void GetCurrentIME(IMEInfo* info);
 
   // Returns a list of availble IMEs.
   virtual void GetAvailableIMEList(IMEInfoList* list);
 
   // Returns a list of properties for the currently selected IME.
   virtual void GetCurrentIMEProperties(IMEPropertyInfoList* list);
 
+  // Returns a non-empty string if IMEs are managed by policy.
+  virtual base::string16 GetIMEManagedMessage();
+
   // Switches to the selected input method.
   virtual void SwitchIME(const std::string& ime_id);
 
   // Activates an IME property.
   virtual void ActivateIMEProperty(const std::string& key);
 
   // Shows UI to manage bluetooth devices.
   virtual void ManageBluetoothDevices();
 
   // Toggles bluetooth.
@@ skipping 40 matching lines @@
   // Creates a system tray item for display rotation lock.
   // TODO(jamescook): Remove this when mus has support for display management
   // and we have a DisplayManager equivalent. See http://crbug.com/548429
   virtual std::unique_ptr<SystemTrayItem> CreateRotationLockTrayItem(
       SystemTray* tray);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_TRAY_SYSTEM_TRAY_DELEGATE_H_