Remove message_loop_helpers.h and update the includes to point to the new location.

chrome/browser/safe_browsing/malware_details_history.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 CHROME_BROWSER_SAFE_BROWSING_MALWARE_DETAILS_HISTORY_H_
 #define CHROME_BROWSER_SAFE_BROWSING_MALWARE_DETAILS_HISTORY_H_
 #pragma once
 
 // This class gets redirect chain for urls from the history service.
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/hash_tables.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
-#include "base/message_loop_helpers.h"
+#include "base/sequenced_task_runner_helpers.h"
 #include "chrome/browser/history/history.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "net/base/completion_callback.h"
 
 namespace safe_browsing {
 typedef std::vector<GURL> RedirectChain;
 }
 
@@ skipping 56 matching lines @@
   std::vector<GURL>::iterator urls_it_;
   // The collected directs from history service
   std::vector<safe_browsing::RedirectChain> redirects_urls_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(MalwareDetailsRedirectsCollector);
 };
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_MALWARE_DETAILS_HISTORY_H_