Initialize IMF with a whitelist of input methods so that login screen doesn't need to wait for comp…

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 <algorithm>  // std::find
 
 #include "ash/ime/input_method_menu_item.h"
 #include "ash/ime/input_method_menu_manager.h"
@@ skipping 42 matching lines @@
 
 bool InputMethodManagerImpl::MigrateXkbInputMethods(
     std::vector<std::string>* input_method_ids) {
   return util_.MigrateXkbInputMethods(input_method_ids);
 }
 
 InputMethodManagerImpl::InputMethodManagerImpl(
     scoped_ptr<InputMethodDelegate> delegate)
     : delegate_(delegate.Pass()),
       state_(STATE_LOGIN_SCREEN),
-      util_(delegate_.get(), GetSupportedInputMethods()),
+      util_(delegate_.get(), whitelist_.GetSupportedInputMethods()),

[Seigo Nonaka, 2014/05/29 06:53:39]

nit: please write why InputMethodManagerImpl::GetSupportedInputMethods doesn't
work here.

[Shu Chen, 2014/05/29 07:15:27]

Because InputMethodManagerImpl::GetSupportedInputMethods() returns empty list if
extension_ime_util::UseWrappedExtensionKeyboardLayouts() returns true.

       component_extension_ime_manager_(new ComponentExtensionIMEManager()),
       weak_ptr_factory_(this) {
 }
 
 InputMethodManagerImpl::~InputMethodManagerImpl() {
   if (candidate_window_controller_.get())
     candidate_window_controller_->RemoveObserver(this);
 }
 
 void InputMethodManagerImpl::AddObserver(
@@ skipping 780 matching lines @@
       CandidateWindowController::CreateCandidateWindowController());
   candidate_window_controller_->AddObserver(this);
 }
 
 Profile* InputMethodManagerImpl::GetProfile() const {
   return ProfileManager::GetActiveUserProfile();
 }
 
 }  // namespace input_method
 }  // namespace chromeos