Remove all remaining traces of MessageLoopProxy.

chrome/browser/chromeos/drive/drive_integration_service.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/chromeos/drive/drive_integration_service.h"
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/macros.h"
 #include "base/strings/stringprintf.h"
@@ skipping 242 matching lines @@
       metadata_storage_.get(),
       cache_root_directory_.Append(kCacheFileDirectory),
       blocking_task_runner_.get(),
       NULL /* free_disk_space_getter */));
   drive_app_registry_.reset(new DriveAppRegistry(drive_service_.get()));
 
   resource_metadata_.reset(new internal::ResourceMetadata(
       metadata_storage_.get(), cache_.get(), blocking_task_runner_));
 
   file_task_runner_ =
-      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE);
+      BrowserThread::GetTaskRunnerForThread(BrowserThread::FILE);
   file_system_.reset(
       test_file_system
           ? test_file_system
           : new FileSystem(
                 profile_->GetPrefs(), logger_.get(), cache_.get(),
                 scheduler_.get(), resource_metadata_.get(),
                 blocking_task_runner_.get(), file_task_runner_.get(),
                 cache_root_directory_.Append(kTemporaryFileDirectory)));
   download_handler_.reset(new DownloadHandler(file_system()));
   debug_info_collector_.reset(new DebugInfoCollector(
@@ skipping 367 matching lines @@
         profile, preference_watcher,
         NULL, std::string(), base::FilePath(), NULL);
   } else {
     service = factory_for_test_->Run(profile);
   }
 
   return service;
 }
 
 }  // namespace drive