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

chrome/browser/first_run/first_run.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/first_run/first_run.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
@@ skipping 10 matching lines @@
 #include "chrome/browser/extensions/updater/extension_updater.h"
 #include "chrome/browser/first_run/first_run_dialog.h"
 #include "chrome/browser/first_run/first_run_import_observer.h"
 #include "chrome/browser/first_run/first_run_internal.h"
 #include "chrome/browser/google/google_util.h"
 #include "chrome/browser/importer/external_process_importer_host.h"
 #include "chrome/browser/importer/importer_host.h"
 #include "chrome/browser/importer/importer_list.h"
 #include "chrome/browser/importer/importer_progress_dialog.h"
 #include "chrome/browser/importer/importer_progress_observer.h"
-#include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/browser/process_singleton.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/search_engines/template_url_service.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/shell_integration.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/global_error/global_error_service.h"
 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
 #include "chrome/browser/ui/webui/sync_promo/sync_promo_ui.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/startup_metric_utils.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/installer/util/master_preferences.h"
 #include "chrome/installer/util/master_preferences_constants.h"
 #include "chrome/installer/util/util_constants.h"
+#include "components/user_prefs/pref_registry_syncable.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
 #include "google_apis/gaia/gaia_auth_util.h"
 #include "googleurl/src/gurl.h"
 
 using content::UserMetricsAction;
 
 namespace {
@@ skipping 666 matching lines @@
   if (template_url && template_url->GetDefaultSearchProvider())
     FirstRunBubbleLauncher::ShowFirstRunBubbleSoon();
   SetShouldShowWelcomePage();
   SetShouldDoPersonalDataManagerFirstRun();
 #endif  // !defined(USE_AURA)
 
   internal::DoPostImportPlatformSpecificTasks();
 }
 
 }  // namespace first_run