[MD settings] fix for opening sync user login

chrome/browser/ui/webui/settings/people_handler.cc

 // Copyright 2015 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/settings/people_handler.h"
 
+#include <string>
+
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/i18n/time_formatting.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/values.h"
@@ skipping 577 matching lines @@
   // blank setup overlay on this page by showing the "done" page. This can
   // happen if the user navigates to chrome://settings/syncSetup in more than
   // one tab. See crbug.com/261566.
   // Note: The following block will transfer focus to the existing wizard.
   if (IsExistingWizardPresent() && !IsActiveLogin())
     CloseUI();
 
   // If a setup wizard is present on this page or another, bring it to focus.
   // Otherwise, display a new one on this page.
   if (!FocusExistingWizardIfPresent())
-    OpenSyncSetup(args);
+    OpenSyncSetup(nullptr);
 }
 
 #if defined(OS_CHROMEOS)
 // On ChromeOS, we need to sign out the user session to fix an auth error, so
 // the user goes through the real signin flow to generate a new auth token.
 void PeopleHandler::HandleDoSignOutOnAuthError(const base::ListValue* args) {
   DVLOG(1) << "Signing out the user to fix a sync error.";
   chrome::AttemptUserExit();
 }
 #endif
 
 #if !defined(OS_CHROMEOS)
 void PeopleHandler::HandleStartSignin(const base::ListValue* args) {
   // Should only be called if the user is not already signed in.
   DCHECK(!SigninManagerFactory::GetForProfile(profile_)->IsAuthenticated());
-  OpenSyncSetup(args);
+  OpenSyncSetup(nullptr);
 }
 
 void PeopleHandler::HandleStopSyncing(const base::ListValue* args) {
   if (GetSyncService())
     ProfileSyncService::SyncEvent(ProfileSyncService::STOP_FROM_OPTIONS);
   SigninManagerFactory::GetForProfile(profile_)
       ->SignOut(signin_metrics::USER_CLICKED_SIGNOUT_SETTINGS);
 
   bool delete_profile = false;
   if (args->GetBoolean(0, &delete_profile) && delete_profile) {
@@ skipping 361 matching lines @@
 void PeopleHandler::UpdateSyncState() {
   web_ui()->CallJavascriptFunction("settings.SyncPrivateApi.sendSyncStatus",
                                    *GetSyncStateDictionary());
 }
 
 void PeopleHandler::OnSigninAllowedPrefChange() {
   UpdateSyncState();
 }
 
 }  // namespace settings