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

chrome/browser/web_resource/promo_resource_service.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/web_resource/promo_resource_service.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
-#include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/browser/web_resource/notification_promo.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
+#include "components/user_prefs/pref_registry_syncable.h"
 #include "content/public/browser/notification_service.h"
 #include "googleurl/src/gurl.h"
 
 namespace {
 
 // Delay on first fetch so we don't interfere with startup.
 const int kStartResourceFetchDelay = 5000;
 
 // Delay between calls to fetch the promo json: 6 hours in production, and 3 min
 // in debug.
@@ skipping 137 matching lines @@
 }
 
 void PromoResourceService::Unpack(const DictionaryValue& parsed_json) {
   for (size_t i = 0; i < arraysize(kValidPromoTypes); ++i) {
     NotificationPromo notification_promo;
     notification_promo.InitFromJson(parsed_json, kValidPromoTypes[i]);
     if (notification_promo.new_notification())
       ScheduleNotification(notification_promo);
   }
 }