Remove all remaining traces of MessageLoopProxy.

chrome/browser/chromeos/file_manager/zip_file_creator.cc

Index: chrome/browser/chromeos/file_manager/zip_file_creator.cc
diff --git a/chrome/browser/chromeos/file_manager/zip_file_creator.cc b/chrome/browser/chromeos/file_manager/zip_file_creator.cc
index 823ee1a8c6efd56d98ae96e53c38ed4ec5ecc1d5..5a3a2f432c724c08e6743b7a5e3cf7dcab8c3bc4 100644
--- a/chrome/browser/chromeos/file_manager/zip_file_creator.cc
+++ b/chrome/browser/chromeos/file_manager/zip_file_creator.cc
@@ -93,8 +93,7 @@ void ZipFileCreator::StartProcessOnIOThread(base::File dest_file) {
   base::FileDescriptor dest_fd(std::move(dest_file));
 
   UtilityProcessHost* host = UtilityProcessHost::Create(
-      this,
-      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI).get());
+      this, BrowserThread::GetTaskRunnerForThread(BrowserThread::UI).get());
   host->SetName(
       l10n_util::GetStringUTF16(IDS_UTILITY_PROCESS_ZIP_FILE_CREATOR_NAME));
   host->SetExposedDir(src_dir_);