Introduce //components/user_prefs, use to eliminate c/b/prefs dependency in Autofill.

chrome/browser/chromeos/proxy_config_service_impl.cc

 // Copyright (c) 2012 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/proxy_config_service_impl.h"
 
 #include <ostream>
 
 #include "base/bind.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/logging.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/string_util.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/chromeos/settings/cros_settings_names.h"
 #include "chrome/browser/policy/proto/chrome_device_policy.pb.h"
-#include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/browser/prefs/proxy_config_dictionary.h"
 #include "chrome/browser/prefs/proxy_prefs.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/pref_names.h"
 #include "chromeos/network/onc/onc_constants.h"
+#include "components/user_prefs/pref_registry_syncable.h"
 #include "content/public/browser/notification_service.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace em = enterprise_management;
 
 namespace chromeos {
 
 namespace {
 
@@ skipping 810 matching lines @@
     device_config_.clear();
     return;
   }
   if (!active_network_.empty()) {
     VLOG(1) << "Try migrating device config to " << active_network_;
     SetProxyConfigForNetwork(active_network_, device_config_, true);
   }
 }
 
 }  // namespace chromeos