Remove duplicated user_prefs::TestingPrefServiceSyncable

chrome/browser/chromeos/fileapi/external_file_url_request_job_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/fileapi/external_file_url_request_job.h"
 
 #include <stddef.h>
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/run_loop.h"
 #include "base/threading/thread.h"
 #include "chrome/browser/chromeos/drive/drive_file_stream_reader.h"
 #include "chrome/browser/chromeos/drive/drive_integration_service.h"
 #include "chrome/browser/chromeos/drive/file_system_util.h"
 #include "chrome/browser/prefs/browser_prefs.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_profile.h"
 #include "chrome/test/base/testing_profile_manager.h"
 #include "components/drive/chromeos/drive_test_util.h"
 #include "components/drive/chromeos/fake_file_system.h"
 #include "components/drive/service/fake_drive_service.h"
 #include "components/drive/service/test_util.h"
 #include "components/pref_registry/pref_registry_syncable.h"
-#include "components/pref_registry/testing_pref_service_syncable.h"
 #include "components/sync_preferences/pref_service_syncable.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "content/public/test/test_file_system_options.h"
 #include "google_apis/drive/test_util.h"
 #include "net/base/request_priority.h"
 #include "net/base/test_completion_callback.h"
 #include "net/http/http_byte_range.h"
 #include "net/url_request/redirect_info.h"
@@ skipping 369 matching lines @@
       "Range", "Wrong Range Header Value", false /* overwrite */);
   request->Start();
 
   base::RunLoop().Run();
 
   EXPECT_EQ(net::ERR_REQUEST_RANGE_NOT_SATISFIABLE,
             test_delegate_->request_status());
 }
 
 }  // namespace chromeos