Keeps the opt-in IME menu in lock screen.

ui/base/ime/chromeos/input_method_manager.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 UI_BASE_IME_CHROMEOS_INPUT_METHOD_MANAGER_H_
 #define UI_BASE_IME_CHROMEOS_INPUT_METHOD_MANAGER_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 281 matching lines @@
   virtual void SetState(scoped_refptr<State> state) = 0;
 
   // Activates or deactivates the IME Menu.
   virtual void ImeMenuActivationChanged(bool is_active) = 0;
 
   // Notifies the input.ime.setMenuItems or input.ime.updateMenuItems API is
   // called to update the IME menu items.
   virtual void NotifyImeMenuItemsChanged(
       const std::string& engine_id,
       const std::vector<MenuItem>& items) = 0;
+
+  // Notify the IME menu activation changed if the current profile's activation
+  // is different from previous.
+  virtual void MaybeNotifyImeMenuActivationChanged() = 0;
 };
 
 }  // namespace input_method
 }  // namespace chromeos
 
 #endif  // UI_BASE_IME_CHROMEOS_INPUT_METHOD_MANAGER_H_