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

chrome/browser/sessions/session_service.h

Index: chrome/browser/sessions/session_service.h
diff --git a/chrome/browser/sessions/session_service.h b/chrome/browser/sessions/session_service.h
index 6cbe60f36c32e9886b9cac2ee864ac929b71aac6..248076c35a696d0ffa5bc14f548b8a3ccb764687 100644
--- a/chrome/browser/sessions/session_service.h
+++ b/chrome/browser/sessions/session_service.h
@@ -184,7 +184,12 @@ class SessionService : public BaseSessionService,
   // 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;
@@ -455,6 +460,13 @@ class SessionService : public BaseSessionService,
   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);
 };