Clean up ARC file system unit tests.

chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner_util.cc

 // Copyright 2016 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/arc/fileapi/arc_file_system_operation_runner_util.h"
 
+#include <utility>
+#include <vector>
+
+#include "chrome/browser/chromeos/arc/fileapi/arc_file_system_operation_runner.h"
 #include "components/arc/arc_service_manager.h"
-#include "components/arc/file_system/arc_file_system_operation_runner.h"
 #include "content/public/browser/browser_thread.h"
 #include "url/gurl.h"
 
 using content::BrowserThread;
 
 namespace arc {
 
 namespace file_system_operation_runner_util {
 
 namespace {
@@ skipping 94 matching lines @@
       base::Bind(
           &GetChildDocumentsOnUIThread, authority, parent_document_id,
           base::Bind(
               &PostToIOThread<base::Optional<std::vector<mojom::DocumentPtr>>>,
               callback)));
 }
 
 }  // namespace file_system_operation_runner_util
 
 }  // namespace arc