mandoline filesystem: Save cookie data to the mojo:filesystem.

net/extras/sqlite/sqlite_persistent_cookie_store.h

 // Copyright (c) 2012 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 NET_EXTRAS_SQLITE_SQLITE_PERSISTENT_COOKIE_STORE_H_
 #define NET_EXTRAS_SQLITE_SQLITE_PERSISTENT_COOKIE_STORE_H_
 
 #include <list>
 #include <string>
 #include <utility>
@@ skipping 30 matching lines @@
   SQLitePersistentCookieStore(
       const base::FilePath& path,
       const scoped_refptr<base::SequencedTaskRunner>& client_task_runner,
       const scoped_refptr<base::SequencedTaskRunner>& background_task_runner,
       bool restore_old_session_cookies,
       CookieCryptoDelegate* crypto_delegate);
 
   // Deletes the cookies whose origins match those given in |cookies|.
   void DeleteAllInList(const std::list<CookieOrigin>& cookies);
 
+  // Closes the database backend and fires |callback| on the worker
+  // thread.

[erikwright (departed), 2015/07/14 15:04:49]

Add documentation about how this affects the PersistentCookieStore methods? In
particular, that the methods should fail and their callbacks should be invoked.

Test coverage of that, too.

+  void Close(const base::Closure& callback);
+
   // CookieMonster::PersistentCookieStore:
   void Load(const LoadedCallback& loaded_callback) override;
   void LoadCookiesForKey(const std::string& key,
                          const LoadedCallback& callback) override;
   void AddCookie(const CanonicalCookie& cc) override;
   void UpdateCookieAccessTime(const CanonicalCookie& cc) override;
   void DeleteCookie(const CanonicalCookie& cc) override;
   void SetForceKeepSessionState() override;
   void Flush(const base::Closure& callback) override;
 
  private:
   ~SQLitePersistentCookieStore() override;
 
   class Backend;
 
   scoped_refptr<Backend> backend_;
 
   DISALLOW_COPY_AND_ASSIGN(SQLitePersistentCookieStore);
 };
 
 }  // namespace net
 
 #endif  // NET_EXTRAS_SQLITE_SQLITE_PERSISTENT_COOKIE_STORE_H_