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

chrome/browser/google/google_url_tracker_factory.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/google/google_url_tracker_factory.h"
 
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/google/google_url_tracker.h"
-#include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
 #include "chrome/common/pref_names.h"
+#include "components/user_prefs/pref_registry_syncable.h"
 
 
 // static
 GoogleURLTracker* GoogleURLTrackerFactory::GetForProfile(Profile* profile) {
   return static_cast<GoogleURLTracker*>(
       GetInstance()->GetServiceForProfile(profile, true));
 }
 
 // static
 GoogleURLTrackerFactory* GoogleURLTrackerFactory::GetInstance() {
@@ skipping 27 matching lines @@
   return true;
 }
 
 bool GoogleURLTrackerFactory::ServiceIsCreatedWithProfile() const {
   return true;
 }
 
 bool GoogleURLTrackerFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }