Remove all remaining traces of MessageLoopProxy.

chrome/browser/media_galleries/fileapi/safe_iapps_library_parser.cc

 // Copyright 2013 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/media_galleries/fileapi/safe_iapps_library_parser.h"
 
 #include <utility>
 
 #include "build/build_config.h"
 #include "chrome/browser/media_galleries/fileapi/media_file_system_backend.h"
@@ skipping 42 matching lines @@
       base::Bind(&SafeIAppsLibraryParser::StartProcessOnIOThread, this));
 }
 
 SafeIAppsLibraryParser::~SafeIAppsLibraryParser() {}
 
 void SafeIAppsLibraryParser::StartProcessOnIOThread() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DCHECK_EQ(INITIAL_STATE, parser_state_);
 
   scoped_refptr<base::SingleThreadTaskRunner> task_runner =
-      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
+      BrowserThread::GetTaskRunnerForThread(BrowserThread::IO);
   utility_process_host_ =
       UtilityProcessHost::Create(this, task_runner.get())->AsWeakPtr();
   utility_process_host_->SetName(l10n_util::GetStringUTF16(
       IDS_UTILITY_PROCESS_MEDIA_LIBRARY_FILE_CHECKER_NAME));
   utility_process_host_->Send(new ChromeUtilityMsg_ParseITunesLibraryXmlFile(
       IPC::TakePlatformFileForTransit(std::move(library_file_))));
 
   parser_state_ = STARTED_PARSING_STATE;
 }
 
@@ skipping 31 matching lines @@
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(SafeIAppsLibraryParser, message)
     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_GotITunesLibrary,
                         OnGotITunesLibrary)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 }  // namespace iapps