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

components/gcm_driver/gcm_driver_desktop_unittest.cc

 // Copyright 2014 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/gcm_driver/gcm_driver_desktop.h"
 
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/metrics/field_trial.h"
+#include "base/prefs/pref_registry_simple.h"
+#include "base/prefs/testing_pref_service.h"
 #include "base/run_loop.h"
 #include "base/strings/string_util.h"
 #include "base/test/test_simple_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/threading/thread.h"
 #include "components/gcm_driver/crypto/gcm_encryption_provider.h"
 #include "components/gcm_driver/fake_gcm_app_handler.h"
 #include "components/gcm_driver/fake_gcm_client.h"
 #include "components/gcm_driver/fake_gcm_client_factory.h"
 #include "components/gcm_driver/gcm_app_handler.h"
 #include "components/gcm_driver/gcm_channel_status_request.h"
 #include "components/gcm_driver/gcm_channel_status_syncer.h"
 #include "components/gcm_driver/gcm_client_factory.h"
 #include "components/gcm_driver/gcm_connection_observer.h"
-#include "components/prefs/pref_registry_simple.h"
-#include "components/prefs/testing_pref_service.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "net/url_request/url_request_test_util.h"
 #include "sync/protocol/experiment_status.pb.h"
 #include "sync/protocol/experiments_specifics.pb.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace gcm {
 
@@ skipping 1272 matching lines @@
   PumpUILoop();
   EXPECT_EQ(GCMClient::UNKNOWN_ERROR, unregistration_result());
 
   // DeleteToken operation will be invoked after GCMClient becomes ready.
   GetGCMClient()->PerformDelayedStart();
   WaitForAsyncOperation();
   EXPECT_EQ(GCMClient::SUCCESS, unregistration_result());
 }
 
 }  // namespace gcm