Reland 37913. Clear local state on exit.

chrome/browser/browser_process_impl.cc

 // Copyright (c) 2010 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/browser_process_impl.h"
 
 #include "app/clipboard/clipboard.h"
 #include "app/l10n_util.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/thread.h"
 #include "base/waitable_event.h"
 #include "chrome/browser/browser_main.h"
 #include "chrome/browser/browser_process_sub_thread.h"
 #include "chrome/browser/browser_trial.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/debugger/debugger_wrapper.h"
 #include "chrome/browser/debugger/devtools_manager.h"
 #include "chrome/browser/download/download_file.h"
 #include "chrome/browser/download/save_file_manager.h"
 #include "chrome/browser/google_url_tracker.h"
 #include "chrome/browser/icon_manager.h"
+#include "chrome/browser/in_process_webkit/dom_storage_context.h"
 #include "chrome/browser/intranet_redirect_detector.h"
 #include "chrome/browser/io_thread.h"
 #include "chrome/browser/metrics/metrics_service.h"
 #include "chrome/browser/net/dns_global.h"
 #include "chrome/browser/net/sdch_dictionary_fetcher.h"
+#include "chrome/browser/net/sqlite_persistent_cookie_store.h"
 #include "chrome/browser/notifications/notification_ui_manager.h"
 #include "chrome/browser/plugin_service.h"
 #include "chrome/browser/profile_manager.h"
 #include "chrome/browser/renderer_host/render_process_host.h"
 #include "chrome/browser/renderer_host/resource_dispatcher_host.h"
 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
 #include "chrome/common/child_process_host.h"
+#include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/pref_service.h"
+#include "chrome/common/url_constants.h"
 #include "ipc/ipc_logging.h"
+#include "webkit/database/database_tracker.h"
 
 #if defined(OS_WIN)
 #include "views/focus/view_storage.h"
 #endif
 
 #if defined(OS_LINUX)
 // TODO(port): get rid of this.
 #include "chrome/common/temp_scaffolding_stubs.h"
 #else
 #include "chrome/browser/printing/print_job_manager.h"
@@ skipping 29 matching lines @@
   clipboard_.reset(new Clipboard);
   main_notification_service_.reset(new NotificationService);
 
   // Must be created after the NotificationService.
   print_job_manager_.reset(new printing::PrintJobManager);
 
   shutdown_event_.reset(new base::WaitableEvent(true, false));
 }
 
 BrowserProcessImpl::~BrowserProcessImpl() {
+  FilePath profile_path;
+  bool clear_local_state_on_exit;
+
+  // Store the profile path for clearing local state data on exit.
+  clear_local_state_on_exit = ShouldClearLocalState(&profile_path);
+
   // Delete the AutomationProviderList before NotificationService,
   // since it may try to unregister notifications
   // Both NotificationService and AutomationProvider are singleton instances in
   // the BrowserProcess. Since AutomationProvider may have some active
   // notification observers, it is essential that it gets destroyed before the
   // NotificationService. NotificationService won't be destroyed until after
   // this destructor is run.
   automation_provider_list_.reset();
 
   // We need to shutdown the SdchDictionaryFetcher as it regularly holds
@@ skipping 45 matching lines @@
   if (resource_dispatcher_host_.get()) {
     resource_dispatcher_host()->download_file_manager()->Shutdown();
     resource_dispatcher_host()->save_file_manager()->Shutdown();
   }
 
   // Need to stop the file_thread_ here to force it to process messages in its
   // message loop from the previous call to shutdown the DownloadFileManager,
   // SaveFileManager and SessionService.
   file_thread_.reset();
 
+  // At this point, no render process exist, so it's safe to access local
+  // state data such as cookies, database, or local storage.
+  if (clear_local_state_on_exit)
+    ClearLocalState(profile_path);
+
   // With the file_thread_ flushed, we can release any icon resources.
   icon_manager_.reset();
 
   // Need to destroy ResourceDispatcherHost before PluginService and
   // SafeBrowsingService, since it caches a pointer to it.
   resource_dispatcher_host_.reset();
 
   // Wait for the pending print jobs to finish.
   print_job_manager_->OnQuit();
   print_job_manager_.reset();
@@ skipping 59 matching lines @@
 
 printing::PrintJobManager* BrowserProcessImpl::print_job_manager() {
   // TODO(abarth): DCHECK(CalledOnValidThread());
   //               See <http://b/1287209>.
   // print_job_manager_ is initialized in the constructor and destroyed in the
   // destructor, so it should always be valid.
   DCHECK(print_job_manager_.get());
   return print_job_manager_.get();
 }
 
+void BrowserProcessImpl::ClearLocalState(const FilePath& profile_path) {
+  SQLitePersistentCookieStore::ClearLocalState(profile_path.Append(
+      chrome::kCookieFilename));
+  DOMStorageContext::ClearLocalState(profile_path, chrome::kExtensionScheme);
+  webkit_database::DatabaseTracker::ClearLocalState(profile_path,
+      chrome::kExtensionScheme);
+  // TODO(jochen): clear app cache local state.
+}
+
+bool BrowserProcessImpl::ShouldClearLocalState(FilePath* profile_path) {
+  FilePath user_data_dir;
+  Profile* profile;
+
+  PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
+  profile = profile_manager_->GetDefaultProfile(user_data_dir);
+  *profile_path = profile->GetPath();
+  return profile->GetPrefs()->GetBoolean(prefs::kClearSiteDataOnExit);
+}
+
 void BrowserProcessImpl::CreateResourceDispatcherHost() {
   DCHECK(!created_resource_dispatcher_host_ &&
          resource_dispatcher_host_.get() == NULL);
   created_resource_dispatcher_host_ = true;
 
   resource_dispatcher_host_.reset(new ResourceDispatcherHost());
   resource_dispatcher_host_->Initialize();
 }
 
 void BrowserProcessImpl::CreateMetricsService() {
@@ skipping 193 matching lines @@
   DCHECK(file_thread_->message_loop() == MessageLoop::current());
   bool result = false;
 
   FilePath inspector_dir;
   if (PathService::Get(chrome::DIR_INSPECTOR, &inspector_dir)) {
     result = file_util::PathExists(inspector_dir);
   }
 
   have_inspector_files_ = result;
 }