Shift cookie system callbacks to OnceCallback to impedance match mojo.

content/browser/net/quota_policy_cookie_store.h

 // Copyright 2015 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 CONTENT_BROWSER_NET_QUOTA_POLICY_COOKIE_STORE_H_
 #define CONTENT_BROWSER_NET_QUOTA_POLICY_COOKIE_STORE_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 31 matching lines @@
       storage::SpecialStoragePolicy* special_storage_policy);
 
   // net::CookieMonster::PersistentCookieStore:
   void Load(const LoadedCallback& loaded_callback) override;
   void LoadCookiesForKey(const std::string& key,
                          const LoadedCallback& callback) override;
   void AddCookie(const net::CanonicalCookie& cc) override;
   void UpdateCookieAccessTime(const net::CanonicalCookie& cc) override;
   void DeleteCookie(const net::CanonicalCookie& cc) override;
   void SetForceKeepSessionState() override;
-  void Flush(const base::Closure& callback) override;
+  void Flush(base::OnceClosure callback) override;
 
  private:
   typedef std::map<net::SQLitePersistentCookieStore::CookieOrigin, size_t>
       CookiesPerOriginMap;
 
   ~QuotaPolicyCookieStore() override;
 
   // Called after cookies are loaded from the database.  Calls |loaded_callback|
   // when done.
   void OnLoad(const LoadedCallback& loaded_callback,
               std::vector<std::unique_ptr<net::CanonicalCookie>> cookies);
 
   // Map of (domain keys(eTLD+1), is secure cookie) to number of cookies in the
   // database.
   CookiesPerOriginMap cookies_per_origin_;
 
   scoped_refptr<storage::SpecialStoragePolicy> special_storage_policy_;
   scoped_refptr<net::SQLitePersistentCookieStore> persistent_store_;
 
   DISALLOW_COPY_AND_ASSIGN(QuotaPolicyCookieStore);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_NET_QUOTA_POLICY_COOKIE_STORE_H_