Shift cookie system callbacks to OnceCallback to impedance match mojo.

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 44 matching lines @@
   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;
+  void Flush(base::OnceClosure 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_