GCMS has automatic checks for CheckExternalConnections. It will be

components/signin/core/browser/account_reconcilor.cc

 // Copyright 2014 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 "components/signin/core/browser/account_reconcilor.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/json/json_reader.h"
@@ skipping 286 matching lines @@
   // Reset state for validating gaia cookie.
   are_gaia_accounts_set_ = false;
   gaia_accounts_.clear();
 
   // Reset state for validating oauth2 tokens.
   primary_account_.clear();
   chrome_accounts_.clear();
   add_to_cookie_.clear();
   ValidateAccountsFromTokenService();
 
-  // TODO(mlerman): Call this only from within the GaiaCookieManagerService,
-  // once /ListAccounts is now called from that class instead of the
-  // reconcilor's GaiaAuthFetcher (which will be removed).
-  cookie_manager_service_->StartFetchingExternalCcResult();
+  GetAccountsFromCookie(base::Bind(
+      &AccountReconcilor::ContinueReconcileActionAfterGetGaiaAccounts,
+      base::Unretained(this)));
 }
 
 void AccountReconcilor::GetAccountsFromCookie(
     GetAccountsFromCookieCallback callback) {
   get_gaia_accounts_callbacks_.push_back(callback);
   if (!gaia_fetcher_)
     MayBeDoNextListAccounts();
 }
 
 void AccountReconcilor::OnListAccountsSuccess(const std::string& data) {
@@ skipping 211 matching lines @@
 
 void AccountReconcilor::OnAddAccountToCookieCompleted(
     const std::string& account_id,
     const GoogleServiceAuthError& error) {
   // Always listens to GaiaCookieManagerService. Only proceed if reconciling.
   if (is_reconcile_started_ && MarkAccountAsAddedToCookie(account_id)) {
     CalculateIfReconcileIsDone();
     ScheduleStartReconcileIfChromeAccountsChanged();
   }
 }
-
-void AccountReconcilor::GetCheckConnectionInfoCompleted(bool succeeded) {
-  if (is_reconcile_started_) {
-    GetAccountsFromCookie(base::Bind(
-        &AccountReconcilor::ContinueReconcileActionAfterGetGaiaAccounts,
-        base::Unretained(this)));
-  }
-}