Revert of Delete base/prefs and update callers to use components.

components/drive/job_scheduler_unittest.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 "components/drive/job_scheduler.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
+#include "base/prefs/testing_pref_service.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/thread_task_runner_handle.h"
 #include "components/drive/drive_pref_names.h"
 #include "components/drive/drive_test_util.h"
 #include "components/drive/event_logger.h"
 #include "components/drive/service/fake_drive_service.h"
 #include "components/drive/service/test_util.h"
-#include "components/prefs/testing_pref_service.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "google_apis/drive/drive_api_parser.h"
 #include "google_apis/drive/test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace drive {
 
 namespace {
 
 // Dummy value passed for the |expected_file_size| parameter of DownloadFile().
@@ skipping 996 matching lines @@
   scheduler_->CancelJob(first_job_id);
 
   // Only the first job should be cancelled.
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(google_apis::DRIVE_CANCELLED, error1);
   EXPECT_EQ(google_apis::HTTP_SUCCESS, error2);
   EXPECT_TRUE(scheduler_->GetJobInfoList().empty());
 }
 
 }  // namespace drive