Reuse webview classic cookies file

content/browser/net/sqlite_persistent_cookie_store.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 "content/browser/net/sqlite_persistent_cookie_store.h"
 
 #include <list>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 1180 matching lines @@
 SQLitePersistentCookieStore::~SQLitePersistentCookieStore() {
   backend_->Close();
   // We release our reference to the Backend, though it will probably still have
   // a reference if the background runner has not run Close() yet.
 }
 
 net::CookieStore* CreatePersistentCookieStore(
     const base::FilePath& path,
     bool restore_old_session_cookies,
     quota::SpecialStoragePolicy* storage_policy,
-    net::CookieMonster::Delegate* cookie_monster_delegate) {
+    net::CookieMonster::Delegate* cookie_monster_delegate,
+    const scoped_refptr<base::SequencedTaskRunner>& background_task_runner) {
   SQLitePersistentCookieStore* persistent_store =
       new SQLitePersistentCookieStore(
           path,
           BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO),
-          BrowserThread::GetBlockingPool()->GetSequencedTaskRunner(
-              BrowserThread::GetBlockingPool()->GetSequenceToken()),
+          background_task_runner.get() ? background_task_runner :
+              BrowserThread::GetBlockingPool()->GetSequencedTaskRunner(
+                  BrowserThread::GetBlockingPool()->GetSequenceToken()),
           restore_old_session_cookies,
           storage_policy);
   net::CookieMonster* cookie_monster =
       new net::CookieMonster(persistent_store, cookie_monster_delegate);
 
   const std::string cookie_priority_experiment_group =
       base::FieldTrialList::FindFullName("CookieRetentionPriorityStudy");
   cookie_monster->SetPriorityAwareGarbageCollection(
       cookie_priority_experiment_group == "ExperimentOn");
 
   return cookie_monster;
 }
 
 }  // namespace content