Keeps the opt-in IME menu in lock screen.

chrome/browser/chromeos/input_method/input_method_manager_impl.cc

 // 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.
 
 #include "chrome/browser/chromeos/input_method/input_method_manager_impl.h"
 
 #include <stdint.h>
 
 #include <algorithm>  // std::find
 #include <memory>
@@ skipping 909 matching lines @@
 }
 
 InputMethodManager::UISessionState InputMethodManagerImpl::GetUISessionState() {
   return ui_session_;
 }
 
 void InputMethodManagerImpl::SetUISessionState(UISessionState new_ui_session) {
   ui_session_ = new_ui_session;
   if (ui_session_ == STATE_TERMINATING && candidate_window_controller_.get())
     candidate_window_controller_.reset();
-
-  // The expanded IME menu is only supportive with 'normal' screen type. It
-  // should be deactivated when the screen type is not 'normal', and be
-  // re-activated when changing back.
-  if (is_ime_menu_activated_ && ui_session_ != STATE_TERMINATING) {
-    FOR_EACH_OBSERVER(
-        InputMethodManager::ImeMenuObserver, ime_menu_observers_,
-        ImeMenuActivationChanged(ui_session_ == STATE_BROWSER_SCREEN));
-  }

[Shu Chen, 2016/08/25 11:49:32]

Per offline discussion, this logic should be moved to
UserSessionManager::ActiveUserChanged().

[Azure Wei, 2016/08/26 09:30:35]

Done. PTAL.

 }
 
 void InputMethodManagerImpl::OnUserAddingStarted() {
   if (ui_session_ == STATE_BROWSER_SCREEN)
     SetUISessionState(STATE_SECONDARY_LOGIN_SCREEN);
 }
 
 void InputMethodManagerImpl::OnUserAddingFinished() {
   if (ui_session_ == STATE_SECONDARY_LOGIN_SCREEN)
     SetUISessionState(STATE_BROWSER_SCREEN);
@@ skipping 260 matching lines @@
 
 void InputMethodManagerImpl::NotifyImeMenuItemsChanged(
     const std::string& engine_id,
     const std::vector<InputMethodManager::MenuItem>& items) {
   FOR_EACH_OBSERVER(InputMethodManager::ImeMenuObserver, ime_menu_observers_,
                     ImeMenuItemsChanged(engine_id, items));
 }
 
 }  // namespace input_method
 }  // namespace chromeos