Revert 184868

chrome/browser/net/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.
 
 // A sqlite implementation of a cookie monster persistent store.
 
 #ifndef CHROME_BROWSER_NET_SQLITE_PERSISTENT_COOKIE_STORE_H_
 #define CHROME_BROWSER_NET_SQLITE_PERSISTENT_COOKIE_STORE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "net/cookies/cookie_monster.h"
 
 class ClearOnExitPolicy;
 class Task;
 
 namespace base {
 class FilePath;
-class SequencedTaskRunner;
 }
 
 namespace net {
 class CanonicalCookie;
 }
 
 // Implements the PersistentCookieStore interface in terms of a SQLite database.
 // For documentation about the actual member functions consult the documentation
 // of the parent class |net::CookieMonster::PersistentCookieStore|.
 // If provided, a |ClearOnExitPolicy| is consulted when the SQLite database is
 // closed to decide which cookies to keep.
 class SQLitePersistentCookieStore
     : public net::CookieMonster::PersistentCookieStore {
  public:
   // If non-NULL, SQLitePersistentCookieStore will keep a scoped_refptr to the
   // |clear_on_exit_policy| throughout its lifetime.
-  // All blocking database accesses will be performed on
-  // |background_task_runner|, while |client_task_runner| is used to invoke
-  // callbacks.
   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,
       ClearOnExitPolicy* clear_on_exit_policy);
 
   // net::CookieMonster::PersistentCookieStore:
   virtual void Load(const LoadedCallback& loaded_callback) OVERRIDE;
   virtual void LoadCookiesForKey(const std::string& key,
       const LoadedCallback& callback) OVERRIDE;
   virtual void AddCookie(const net::CanonicalCookie& cc) OVERRIDE;
   virtual void UpdateCookieAccessTime(const net::CanonicalCookie& cc) OVERRIDE;
   virtual void DeleteCookie(const net::CanonicalCookie& cc) OVERRIDE;
   virtual void SetForceKeepSessionState() OVERRIDE;
   virtual void Flush(const base::Closure& callback) OVERRIDE;
 
  protected:
    virtual ~SQLitePersistentCookieStore();
 
  private:
   class Backend;
 
   scoped_refptr<Backend> backend_;
 
   DISALLOW_COPY_AND_ASSIGN(SQLitePersistentCookieStore);
 };
 
 #endif  // CHROME_BROWSER_NET_SQLITE_PERSISTENT_COOKIE_STORE_H_