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

components/data_reduction_proxy/core/browser/data_reduction_proxy_compression_stats_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/data_reduction_proxy/core/browser/data_reduction_proxy_compression_stats.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <string>
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/prefs/pref_registry_simple.h"
+#include "base/prefs/pref_service.h"
+#include "base/prefs/testing_pref_service.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/test/histogram_tester.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_prefs.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_test_utils.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_pref_names.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_switches.h"
-#include "components/prefs/pref_registry_simple.h"
-#include "components/prefs/pref_service.h"
-#include "components/prefs/testing_pref_service.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 const int kWriteDelayMinutes = 60;
 
 // Each bucket holds data usage for a 15 minute interval. History is maintained
 // for 60 days.
 const int kNumExpectedBuckets = 60 * 24 * 60 / 15;
 
@@ skipping 1263 matching lines @@
   expected_data_usage =
       make_scoped_ptr(new std::vector<data_reduction_proxy::DataUsageBucket>(
           kNumExpectedBuckets));
   DataUsageLoadVerifier verifier2(std::move(expected_data_usage));
   LoadHistoricalDataUsage(base::Bind(&DataUsageLoadVerifier::OnLoadDataUsage,
                                      base::Unretained(&verifier2)));
   base::RunLoop().RunUntilIdle();
 }
 
 }  // namespace data_reduction_proxy