Add a preference to clear plugin data on browser shutdown.

chrome/browser/browser_process_impl.h

 // 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.
 
 // When each service is created, we set a flag indicating this. At this point,
 // the service initialization could fail or succeed. This allows us to remember
 // if we tried to create a service, and not try creating it over and over if
 // the creation failed.
 
 #ifndef CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_
 #define CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/message_loop.h"
 #include "base/non_thread_safe.h"
 #include "base/timer.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/download/download_status_updater.h"
 #include "chrome/browser/prefs/pref_change_registrar.h"
 #include "chrome/browser/tab_contents/thumbnail_generator.h"
+#include "chrome/common/notification_observer.h"
+#include "chrome/common/notification_registrar.h"
 #include "ipc/ipc_message.h"
 
 class ChromeNetLog;
 class CommandLine;
 class DebuggerWrapper;
 class FilePath;
 class NotificationService;
+class PluginDataRemover;
 class TabCloseableStateWatcher;
 
 // Real implementation of BrowserProcess that creates and returns the services.
-class BrowserProcessImpl : public BrowserProcess, public NonThreadSafe {
+class BrowserProcessImpl : public BrowserProcess,
+                           public NonThreadSafe,
+                           public NotificationObserver {
  public:
   explicit BrowserProcessImpl(const CommandLine& command_line);
   virtual ~BrowserProcessImpl();
 
   virtual void EndSession();
 
+  // BrowserProcess methods
   virtual ResourceDispatcherHost* resource_dispatcher_host();
   virtual MetricsService* metrics_service();
   virtual IOThread* io_thread();
   virtual base::Thread* file_thread();
   virtual base::Thread* db_thread();
   virtual base::Thread* process_launcher_thread();
   virtual base::Thread* cache_thread();
 #if defined(USE_X11)
   virtual base::Thread* background_x11_thread();
 #endif
@@ skipping 16 matching lines @@
   virtual IntranetRedirectDetector* intranet_redirect_detector();
   virtual const std::string& GetApplicationLocale();
   virtual void SetApplicationLocale(const std::string& locale);
   virtual DownloadStatusUpdater* download_status_updater();
   virtual base::WaitableEvent* shutdown_event();
   virtual TabCloseableStateWatcher* tab_closeable_state_watcher();
   virtual safe_browsing::ClientSideDetectionService*
       safe_browsing_detection_service();
   virtual void CheckForInspectorFiles();
 
+  // NotificationObserver methods
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
   virtual void StartAutoupdateTimer();
 #endif
 
   virtual bool have_inspector_files() const;
 
 #if defined(IPC_MESSAGE_LOG_ENABLED)
   virtual void SetIPCLoggingEnabled(bool enable);
 #endif
 
  private:
   void ClearLocalState(const FilePath& profile_path);
   bool ShouldClearLocalState(FilePath* profile_path);
 
   void CreateResourceDispatcherHost();
   void CreatePrefService();
   void CreateMetricsService();
 
   void CreateIOThread();
   static void CleanupOnIOThread();
 
+  void WaitForPluginDataRemoverToFinish();
+
   void CreateFileThread();
   void CreateDBThread();
   void CreateProcessLauncherThread();
   void CreateCacheThread();
   void CreateTemplateURLModel();
   void CreateProfileManager();
   void CreateWebDataService();
   void CreateLocalState();
   void CreateViewedPageTracker();
   void CreateIconManager();
@@ skipping 108 matching lines @@
   // Our best estimate about the existence of the inspector directory.
   bool have_inspector_files_;
 
   // Ensures that the observers of plugin/print disable/enable state
   // notifications are properly added and removed.
   PrefChangeRegistrar pref_change_registrar_;
 
   // Lives here so can safely log events on shutdown.
   scoped_ptr<ChromeNetLog> net_log_;
 
+  NotificationRegistrar notification_registrar_;
+  scoped_refptr<PluginDataRemover> plugin_data_remover_;
+
 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
   base::RepeatingTimer<BrowserProcessImpl> autoupdate_timer_;
 
   // Gets called by autoupdate timer to see if browser needs restart and can be
   // restarted, and if that's the case, restarts the browser.
   void OnAutoupdateTimer();
   bool CanAutorestartForUpdate() const;
   void RestartPersistentInstance();
 #endif  // defined(OS_WIN) || defined(OS_LINUX)
 
   DISALLOW_COPY_AND_ASSIGN(BrowserProcessImpl);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_