Stop using BrowserThread::FILE as TransportSecurityPersister's task runner

chrome/browser/profiles/profile_io_data.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 "chrome/browser/profiles/profile_io_data.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 1025 matching lines @@
   // delegate just created.
   proxy_service_.reset(
       ProxyServiceFactory::CreateProxyService(
           io_thread->net_log(),
           io_thread_globals->proxy_script_fetcher_context.get(),
           io_thread_globals->system_network_delegate.get(),
           profile_params_->proxy_config_service.release(),
           command_line,
           quick_check_enabled_.GetValue()));
   transport_security_state_.reset(new net::TransportSecurityState());
+  base::SequencedWorkerPool* pool = BrowserThread::GetBlockingPool();
   transport_security_persister_.reset(
       new net::TransportSecurityPersister(
           transport_security_state_.get(),
           profile_params_->path,
-          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE),
+          pool->GetSequencedTaskRunnerWithShutdownBehavior(
+              pool->GetSequenceToken(),
+              base::SequencedWorkerPool::BLOCK_SHUTDOWN),
           IsOffTheRecord()));
 
   // Take ownership over these parameters.
   cookie_settings_ = profile_params_->cookie_settings;
   host_content_settings_map_ = profile_params_->host_content_settings_map;
 #if defined(ENABLE_EXTENSIONS)
   extension_info_map_ = profile_params_->extension_info_map;
 #endif
 
   resource_context_->host_resolver_ = io_thread_globals->host_resolver.get();
@@ skipping 236 matching lines @@
 void ProfileIOData::SetCookieSettingsForTesting(
     CookieSettings* cookie_settings) {
   DCHECK(!cookie_settings_.get());
   cookie_settings_ = cookie_settings;
 }
 
 void ProfileIOData::set_signin_names_for_testing(
     SigninNamesOnIOThread* signin_names) {
   signin_names_.reset(signin_names);
 }