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

components/data_reduction_proxy/core/browser/data_reduction_proxy_compression_stats.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 <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram_macros.h"
+#include "base/prefs/pref_service.h"
+#include "base/prefs/scoped_user_pref_update.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/trace_event/trace_event.h"
 #include "base/values.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_metrics.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_service.h"
 #include "components/data_reduction_proxy/core/browser/data_usage_store.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_service.h"
-#include "components/prefs/scoped_user_pref_update.h"
 #include "net/base/mime_util.h"
 
 namespace data_reduction_proxy {
 
 namespace {
 
 #define CONCAT(a, b) a##b
 // CONCAT1 provides extra level of indirection so that __LINE__ macro expands.
 #define CONCAT1(a, b) CONCAT(a, b)
 #define UNIQUE_VARNAME CONCAT1(var_, __LINE__)
@@ skipping 1168 matching lines @@
 std::string DataReductionProxyCompressionStats::NormalizeHostname(
     const std::string& host) {
   size_t pos = host.find("://");
   if (pos != std::string::npos)
     return host.substr(pos + 3);
 
   return host;
 }
 
 }  // namespace data_reduction_proxy