Add FlushStore to CookieStore interface.

net/cookies/cookie_store_test_helpers.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_COOKIES_COOKIE_STORE_TEST_HELPERS_H_
 #define NET_COOKIES_COOKIE_STORE_TEST_HELPERS_H_
 
 #include "net/cookies/cookie_monster.h"
 
 #include <string>
@@ skipping 45 matching lines @@
                                     const DeleteCallback& callback) override;
 
   void DeleteAllCreatedBetweenForHostAsync(
       const base::Time delete_begin,
       const base::Time delete_end,
       const GURL& url,
       const DeleteCallback& callback) override;
 
   void DeleteSessionCookiesAsync(const DeleteCallback&) override;
 
+  void FlushStore(const base::Closure& callback) override;
+
   CookieMonster* GetCookieMonster() override;
 
   scoped_ptr<CookieStore::CookieChangedSubscription>
   AddCallbackForCookie(const GURL& url, const std::string& name,
                        const CookieChangedCallback& callback) override;
 
  private:
   // Be called immediately from CookieMonster.
 
   void SetCookiesInternalCallback(bool result);
@@ skipping 35 matching lines @@
 
  private:
   const GURL url_;
   const std::string registry_;
   const std::string domain_and_registry_;
 };
 
 }  // namespace net
 
 #endif  // NET_COOKIES_COOKIE_STORE_TEST_HELPERS_H_