Keeps the opt-in IME menu in lock screen.

chrome/browser/chromeos/input_method/input_method_manager_impl.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 CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_IMPL_H_
 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_IMPL_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 153 matching lines @@
   void RemoveImeMenuObserver(
       InputMethodManager::ImeMenuObserver* observer) override;
   std::unique_ptr<InputMethodDescriptors> GetSupportedInputMethods()
       const override;
   void ActivateInputMethodMenuItem(const std::string& key) override;
   bool IsISOLevel5ShiftUsedByCurrentInputMethod() const override;
   bool IsAltGrUsedByCurrentInputMethod() const override;
   void NotifyImeMenuItemsChanged(
       const std::string& engine_id,
       const std::vector<InputMethodManager::MenuItem>& items) override;
+  bool GetImeMenuActivation(Profile* profile) override;
 
   // chromeos::UserAddingScreen:
   void OnUserAddingStarted() override;
   void OnUserAddingFinished() override;
 
   ImeKeyboard* GetImeKeyboard() override;
   InputMethodUtil* GetInputMethodUtil() override;
   ComponentExtensionIMEManager* GetComponentExtensionIMEManager() override;
   bool IsLoginKeyboard(const std::string& layout) const override;
 
@@ skipping 94 matching lines @@
       component_extension_ime_manager_;
 
   // An object for switching XKB layouts and keyboard status like caps lock and
   // auto-repeat interval.
   std::unique_ptr<ImeKeyboard> keyboard_;
 
   // Whether load IME extensions.
   bool enable_extension_loading_;
 
   // Whether the expanded IME menu is activated.
   bool is_ime_menu_activated_;

[stevenjb, 2016/08/26 17:15:02]

Unused now?

[Azure Wei, 2016/08/26 21:59:59]

Removed. Thanks.

 
   // The engine map from extension_id to an engine.
   typedef std::map<std::string, ui::IMEEngineHandlerInterface*> EngineMap;
   typedef std::map<Profile*, EngineMap, ProfileCompare> ProfileEngineMap;
   ProfileEngineMap engine_map_;
 
+  // The opt-in IME menu activation state of each profile.
+  std::map<Profile*, bool> menu_map_;

[stevenjb, 2016/08/26 17:15:02]

This should be named something like 'menu_activated_for_profile_'.

[Azure Wei, 2016/08/26 21:59:59]

Done.

+
   DISALLOW_COPY_AND_ASSIGN(InputMethodManagerImpl);
 };
 
 }  // namespace input_method
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_MANAGER_IMPL_H_