PART1: Initiated the SignedSettings refactoring.

chrome/browser/ui/webui/options/chromeos/accounts_options_handler.cc

 // Copyright (c) 2011 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/ui/webui/options/chromeos/accounts_options_handler.h"
 
 #include "base/json/json_reader.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/chromeos/cros_settings.h"
 #include "chrome/browser/chromeos/cros_settings_names.h"
 #include "chrome/browser/chromeos/login/authenticator.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/chromeos/user_cros_settings_provider.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/policy/browser_policy_connector.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace chromeos {
 
-AccountsOptionsHandler::AccountsOptionsHandler()
-    : CrosOptionsPageUIHandler(new UserCrosSettingsProvider) {
+AccountsOptionsHandler::AccountsOptionsHandler() {
 }
 
 AccountsOptionsHandler::~AccountsOptionsHandler() {
 }
 
 void AccountsOptionsHandler::RegisterMessages() {
   DCHECK(web_ui_);
   web_ui_->RegisterMessageCallback("whitelistUser",
       NewCallback(this, &AccountsOptionsHandler::WhitelistUser));
   web_ui_->RegisterMessageCallback("unwhitelistUser",
@@ skipping 16 matching lines @@
   localized_strings->SetString("show_user_on_signin",l10n_util::GetStringUTF16(
       IDS_OPTIONS_ACCOUNTS_SHOW_USER_NAMES_ON_SINGIN_DESCRIPTION));
   localized_strings->SetString("username_edit_hint",l10n_util::GetStringUTF16(
       IDS_OPTIONS_ACCOUNTS_USERNAME_EDIT_HINT));
   localized_strings->SetString("username_format",l10n_util::GetStringUTF16(
       IDS_OPTIONS_ACCOUNTS_USERNAME_FORMAT));
   localized_strings->SetString("add_users",l10n_util::GetStringUTF16(
       IDS_OPTIONS_ACCOUNTS_ADD_USERS));
   localized_strings->SetString("owner_only", l10n_util::GetStringUTF16(
       IDS_OPTIONS_ACCOUNTS_OWNER_ONLY));
-  localized_strings->SetString("owner_user_id", UTF8ToUTF16(
-      UserCrosSettingsProvider::cached_owner()));
+
+  std::string owner;
+  CrosSettings::Get()->GetString(kDeviceOwner, &owner);
+  localized_strings->SetString("owner_user_id", UTF8ToUTF16(owner));
 
   localized_strings->SetString("current_user_is_owner",
       UserManager::Get()->current_user_is_owner() ?
       ASCIIToUTF16("true") : ASCIIToUTF16("false"));
   localized_strings->SetString("logged_in_as_guest",
       UserManager::Get()->IsLoggedInAsGuest() ?
       ASCIIToUTF16("true") : ASCIIToUTF16("false"));
   localized_strings->SetString("whitelist_is_managed",
       g_browser_process->browser_policy_connector()->IsEnterpriseManaged() ?
           ASCIIToUTF16("true") : ASCIIToUTF16("false"));
 }
 
-UserCrosSettingsProvider* AccountsOptionsHandler::users_settings() const {
-  return static_cast<UserCrosSettingsProvider*>(settings_provider_.get());
-}
-
 void AccountsOptionsHandler::WhitelistUser(const ListValue* args) {
   std::string email;
   if (!args->GetString(0, &email)) {
     return;
   }
 
-  users_settings()->WhitelistUser(Authenticator::Canonicalize(email));
+  UserCrosSettingsProvider::WhitelistUser(Authenticator::Canonicalize(email));
 }
 
 void AccountsOptionsHandler::UnwhitelistUser(const ListValue* args) {
   std::string email;
   if (!args->GetString(0, &email)) {
     return;
   }
 
-  users_settings()->UnwhitelistUser(Authenticator::Canonicalize(email));
+  UserCrosSettingsProvider::UnwhitelistUser(Authenticator::Canonicalize(email));
   UserManager::Get()->RemoveUser(email, NULL);
 }
 
 void AccountsOptionsHandler::WhitelistExistingUsers(const ListValue* args) {
   ListValue whitelist_users;
 
   UserVector users = UserManager::Get()->GetUsers();
   for (UserVector::const_iterator it = users.begin();
        it < users.end(); ++it) {
     const std::string& email = it->email();
-    if (!UserCrosSettingsProvider::IsEmailInCachedWhitelist(email)) {
+    const ListValue *user_list;
+    CrosSettings::Get()->GetList(kAccountsPrefUsers, &user_list);
+    if (user_list->Find(StringValue(email)) != user_list->end()) {
       DictionaryValue* user_dict = new DictionaryValue;
       user_dict->SetString("name", it->GetDisplayName());
       user_dict->SetString("email", email);
       user_dict->SetBoolean("owner", false);
 
       whitelist_users.Append(user_dict);
     }
   }
 
   web_ui_->CallJavascriptFunction("AccountsOptions.addUsers", whitelist_users);
 }
 
 }  // namespace chromeos