Correct the order of destruction of ProfileImplIOData and ExtensionProcessManager. This was causi...

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 180 matching lines @@
 
   void GetCacheParameters(bool is_media_context,
                           FilePath* cache_path,
                           int* max_size);
 
   content::NotificationRegistrar registrar_;
   PrefChangeRegistrar pref_change_registrar_;
 
   FilePath path_;
   FilePath base_cache_path_;
+
+  // !!! BIG HONKING WARNING !!!
+  //  The order of the members below is important. Do not change it unless
+  //  you know what you're doing. Also, if adding a new member here make sure
+  //  that the declaration occurs AFTER things it depends on as destruction
+  //  happens in reverse order of declaration.
+
   scoped_ptr<ExtensionPrefValueMap> extension_pref_value_map_;
   // Keep |prefs_| on top for destruction order because |extension_prefs_|,
   // |net_pref_observer_|, |web_resource_service_|, and |io_data_| store
   // pointers to |prefs_| and shall be destructed first.
   scoped_ptr<PrefService> prefs_;
   scoped_ptr<PrefService> otr_prefs_;
   scoped_ptr<VisitedLinkEventListener> visited_link_event_listener_;
   scoped_ptr<VisitedLinkMaster> visited_link_master_;
   // Keep extension_prefs_ on top of extension_service_ because the latter
   // maintains a pointer to the first and shall be destructed first.
   scoped_ptr<ExtensionPrefs> extension_prefs_;
   scoped_ptr<ExtensionService> extension_service_;
   scoped_refptr<UserScriptMaster> user_script_master_;
+
+  ProfileImplIOData::Handle io_data_;
+
   scoped_refptr<ExtensionDevToolsManager> extension_devtools_manager_;
   // extension_info_map_ needs to outlive extension_process_manager_.
   scoped_refptr<ExtensionInfoMap> extension_info_map_;
+  // |extension_process_manager_| must be destroyed before |io_data_|.
+  // While |extension_process_manager_| still lives, we handle incoming
+  // resource requests from extension processes and those require access
+  // to the ResourceContext owned by |io_data_|.
   scoped_ptr<ExtensionProcessManager> extension_process_manager_;
   scoped_refptr<ExtensionMessageService> extension_message_service_;
   scoped_ptr<ExtensionEventRouter> extension_event_router_;
   scoped_ptr<ExtensionNavigationObserver> extension_navigation_observer_;
   scoped_refptr<ExtensionSpecialStoragePolicy>
       extension_special_storage_policy_;
   scoped_ptr<SSLHostState> ssl_host_state_;
   scoped_ptr<NetPrefObserver> net_pref_observer_;
   scoped_ptr<TemplateURLFetcher> template_url_fetcher_;
   scoped_ptr<BookmarkModel> bookmark_bar_model_;
   scoped_refptr<PromoResourceService> promo_resource_service_;
   scoped_refptr<ProtocolHandlerRegistry> protocol_handler_registry_;
 
   scoped_ptr<TokenService> token_service_;
   scoped_ptr<ProfileSyncComponentsFactory> profile_sync_factory_;
   scoped_ptr<ProfileSyncService> sync_service_;
 
-  ProfileImplIOData::Handle io_data_;
-
   scoped_ptr<SSLConfigServiceManager> ssl_config_service_manager_;
 
   scoped_refptr<HostContentSettingsMap> host_content_settings_map_;
   scoped_refptr<HostZoomMap> host_zoom_map_;
   scoped_refptr<GeolocationPermissionContext>
       geolocation_permission_context_;
   scoped_refptr<SpeechInputPreferences> speech_input_preferences_;
   scoped_refptr<UserStyleSheetWatcher> user_style_sheet_watcher_;
   scoped_ptr<FindBarState> find_bar_state_;
   scoped_refptr<HistoryService> history_service_;
@@ skipping 54 matching lines @@
   scoped_ptr<ChromeURLDataManager> chrome_url_data_manager_;
 
   Profile::Delegate* delegate_;
 
   chrome_browser_net::Predictor* predictor_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileImpl);
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_IMPL_H_