SessionRestore: Store session cookies and restore them if chrome crashes or auto-restarts.

chrome/browser/sessions/session_service.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.
 
 #ifndef CHROME_BROWSER_SESSIONS_SESSION_SERVICE_H_
 #define CHROME_BROWSER_SESSIONS_SESSION_SERVICE_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 166 matching lines @@
   // The created request does NOT directly invoke the callback, rather the
   // callback invokes OnGotSessionCommands from which we map the
   // SessionCommands to browser state, then notify the callback.
   Handle GetCurrentSession(CancelableRequestConsumerBase* consumer,
                            SessionCallback* callback);
 
   // Overridden from BaseSessionService because we want some UMA reporting on
   // session update activities.
   virtual void Save() OVERRIDE;
 
+  // Restores or resets the session state, such as session cookies.
+  void RestoreOrResetSessionState(bool restore);
+
  private:
+  class SessionCookieStore;
+
   typedef std::map<SessionID::id_type, std::pair<int, int> > IdToRange;
   typedef std::map<SessionID::id_type, SessionTab*> IdToSessionTab;
   typedef std::map<SessionID::id_type, SessionWindow*> IdToSessionWindow;
 
 
   // These types mirror Browser::Type, but are re-defined here because these
   // specific enumeration _values_ are written into the session database and
   // are needed to maintain forward compatibility.
   // Note that we only store browsers of type TYPE_TABBED and TYPE_POPUP.
   enum WindowType {
@@ skipping 250 matching lines @@
   base::TimeTicks last_updated_tab_closed_time_;
   base::TimeTicks last_updated_nav_list_pruned_time_;
   base::TimeTicks last_updated_nav_entry_commit_time_;
   base::TimeTicks last_updated_save_time_;
 
   // Constants used in calculating histogram data.
   const base::TimeDelta save_delay_in_millis_;
   const base::TimeDelta save_delay_in_mins_;
   const base::TimeDelta save_delay_in_hrs_;
 
+  // Stores the value of the command line switch enable-restore-session-data. If
+  // the flag is on, session data (such as cookies) are saved, and restored
+  // after a restart or a crash.
+  bool enable_restore_session_data_;
+
+  scoped_refptr<SessionCookieStore> session_cookie_store_;
+
   DISALLOW_COPY_AND_ASSIGN(SessionService);
 };
 
 #endif  // CHROME_BROWSER_SESSIONS_SESSION_SERVICE_H_