Settings Sync: Fix CloseUI logic in both Settings and MD Settings.

chrome/browser/ui/webui/options/sync_setup_handler.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/ui/webui/options/sync_setup_handler.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 701 matching lines @@
           // TODO(rsimha): Revisit this for M30. See http://crbug.com/252049.
           if (sync_service->IsFirstSetupInProgress()) {
             SigninManagerFactory::GetForProfile(GetProfile())
                 ->SignOut(signin_metrics::ABORT_SIGNIN,
                           signin_metrics::SignoutDelete::IGNORE_METRIC);
           }
   #endif
         }
       }
     }
+  }
 
-    GetLoginUIService()->LoginUIClosed(this);
-  }
+  LoginUIService* service = GetLoginUIService();
+  if (service)
+    service->LoginUIClosed(this);
 
   // Alert the sync service anytime the sync setup dialog is closed. This can
   // happen due to the user clicking the OK or Cancel button, or due to the
   // dialog being closed by virtue of sync being disabled in the background.
   sync_blocker_.reset();
 
   configuring_sync_ = false;
 }
 
 void SyncSetupHandler::OpenSyncSetup(bool creating_supervised_user) {
@@ skipping 206 matching lines @@
                                          page, args);
 
   // Make sure the tab used for the Gaia sign in does not cover the settings
   // tab.
   FocusUI();
 }
 
 LoginUIService* SyncSetupHandler::GetLoginUIService() const {
   return LoginUIServiceFactory::GetForProfile(GetProfile());
 }