Keeps the opt-in IME menu in lock screen.

ui/base/ime/chromeos/input_method_manager.h

Index: ui/base/ime/chromeos/input_method_manager.h
diff --git a/ui/base/ime/chromeos/input_method_manager.h b/ui/base/ime/chromeos/input_method_manager.h
index fcb49218b6093cb0bc1e9f34da9dad6fe7c112ef..448fc20cb67ddaef099f27020f6037b58db7e158 100644
--- a/ui/base/ime/chromeos/input_method_manager.h
+++ b/ui/base/ime/chromeos/input_method_manager.h
@@ -299,6 +299,10 @@ class UI_BASE_IME_EXPORT InputMethodManager {
   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