chrome/browser: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

chrome/browser/sync/test/integration/sync_extension_installer.cc

 // Copyright 2014 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/sync/test/integration/sync_extension_installer.h"
 
 #include "base/bind.h"
-#include "base/message_loop/message_loop.h"
+#include "base/location.h"
+#include "base/single_thread_task_runner.h"
+#include "base/thread_task_runner_handle.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/sync/test/integration/sync_extension_helper.h"
 #include "content/public/browser/notification_source.h"
 
 SyncedExtensionInstaller::SyncedExtensionInstaller(Profile* profile)
     : profile_(profile),
       weak_ptr_factory_(this) {
   DoInstallSyncedExtensions();
   registrar_.Add(this,
                  extensions::NOTIFICATION_EXTENSION_UPDATING_STARTED,
                  content::Source<Profile>(profile_));
 }
 
 SyncedExtensionInstaller::~SyncedExtensionInstaller() {
 }
 
 void SyncedExtensionInstaller::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   DCHECK_EQ(extensions::NOTIFICATION_EXTENSION_UPDATING_STARTED, type);
 
   // The extension system is trying to check for updates.  In the real world,
   // this would be where synced extensions are asynchronously downloaded from
   // the web store and installed.  In this test framework, we use this event as
   // a signal that it's time to asynchronously fake the installation of these
   // extensions.
 
-  base::MessageLoop::current()->PostTask(
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE,
       base::Bind(&SyncedExtensionInstaller::DoInstallSyncedExtensions,
                  weak_ptr_factory_.GetWeakPtr()));
 }
 
 void SyncedExtensionInstaller::DoInstallSyncedExtensions() {
   SyncExtensionHelper::GetInstance()->InstallExtensionsPendingForSync(profile_);
 }