Fix crash during profile shutdown

chrome/browser/profiles/profile_impl.h

 // 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.
 
 // This class gathers state related to a single user profile.
 
 #ifndef CHROME_BROWSER_PROFILES_PROFILE_IMPL_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_IMPL_H_
 #pragma once
 
@@ skipping 249 matching lines @@
   scoped_refptr<HistoryService> history_service_;
   scoped_ptr<FaviconService> favicon_service_;
   scoped_ptr<AutocompleteClassifier> autocomplete_classifier_;
   scoped_refptr<history::ShortcutsBackend> shortcuts_backend_;
   scoped_refptr<WebDataService> web_data_service_;
   scoped_refptr<PasswordStore> password_store_;
   scoped_refptr<WebKitContext> webkit_context_;
   scoped_refptr<fileapi::FileSystemContext> file_system_context_;
   scoped_refptr<quota::QuotaManager> quota_manager_;
   scoped_ptr<NetworkActionPredictor> network_action_predictor_;
+  bool profile_sync_service_created_;
   bool history_service_created_;
   bool favicon_service_created_;
   bool created_web_data_service_;
   bool created_password_store_;
   bool clear_local_state_on_exit_;
   // Whether or not the last session exited cleanly. This is set only once.
   bool last_session_exited_cleanly_;
 
   base::OneShotTimer<ProfileImpl> create_session_service_timer_;
 
@@ skipping 37 matching lines @@
   Profile::Delegate* delegate_;
 
   chrome_browser_net::Predictor* predictor_;
 
   bool session_restore_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileImpl);
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_IMPL_H_