Revert 198844 "Move sequenced_task_runner to base/task"

trunk/src/chrome/browser/chromeos/drive/drive_file_stream_reader_unittest.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/chromeos/drive/drive_file_stream_reader.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop.h"
 #include "base/rand_util.h"
-#include "base/task/sequenced_task_runner.h"
+#include "base/sequenced_task_runner.h"
 #include "base/threading/thread.h"
 #include "chrome/browser/chromeos/drive/fake_file_system.h"
 #include "chrome/browser/chromeos/drive/file_reader.h"
 #include "chrome/browser/chromeos/drive/file_system_util.h"
 #include "chrome/browser/chromeos/drive/test_util.h"
 #include "chrome/browser/google_apis/fake_drive_service.h"
 #include "chrome/browser/google_apis/task_util.h"
 #include "chrome/browser/google_apis/test_util.h"
 #include "content/public/test/test_browser_thread.h"
 #include "net/base/io_buffer.h"
@@ skipping 455 matching lines @@
 
   // Read data from the reader, again.
   std::string second_content;
   ASSERT_EQ(net::OK, test_util::ReadAllData(reader.get(), &second_content));
 
   // The same content is expected.
   EXPECT_EQ(first_content, second_content);
 }
 
 }  // namespace drive