Add CookieStore::DeleteSessionCookiesAsync method.

net/cookies/cookie_store_test_helpers.cc

 // 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.
 
 #include "net/cookies/cookie_store_test_helpers.h"
 
 #include "base/bind.h"
 #include "base/message_loop.h"
 
 namespace net {
@@ skipping 130 matching lines @@
   ADD_FAILURE();
 }
 
 void DelayedCookieMonster::DeleteAllCreatedBetweenAsync(
     const base::Time& delete_begin,
     const base::Time& delete_end,
     const DeleteCallback& callback) {
   ADD_FAILURE();
 }
 
+void DelayedCookieMonster::DeleteSessionCookiesAsync(const DeleteCallback&) {
+  ADD_FAILURE();
+}
+
 CookieMonster* DelayedCookieMonster::GetCookieMonster() {
   return cookie_monster_;
 }
 
 }  // namespace net