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

components/data_reduction_proxy/core/browser/data_reduction_proxy_config_retrieval_params_unittest.cc

 // Copyright 2015 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_config_retrieval_params.h"
 
 #include <stdint.h>
 
 #include <map>
 
 #include "base/message_loop/message_loop.h"
+#include "base/prefs/pref_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/time/time.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/prefs/pref_service.h"
 #include "components/variations/variations_associated_data.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 // Test value for how long a Data Reduction Proxy configuration should be valid.
 const int64_t kConfigExpirationSeconds = 60 * 60 * 24;
 
 // Checks that |actual| falls in the range of |min| + |delta| and
 // |max| + |delta|.
@@ skipping 194 matching lines @@
       ExpectInTimeRange(
           min_now, max_now, test_case.expected_delta_5,
           config_params->variations()[5].simulated_config_retrieved());
     } else {
       EXPECT_EQ(0u, config_params->variations().size());
     }
   }
 }
 
 }  // namespace data_reduction_proxy