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

chrome/browser/prefs/pref_service_syncable.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/prefs/pref_service_syncable.h"
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/prefs/default_pref_store.h"
 #include "base/prefs/overlay_user_pref_store.h"
 #include "base/prefs/pref_notifier_impl.h"
 #include "base/prefs/pref_registry.h"
 #include "base/prefs/pref_value_store.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/value_conversions.h"
 #include "chrome/browser/prefs/pref_model_associator.h"
-#include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/browser/prefs/pref_service_syncable_observer.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/prefs/prefs_tab_helper.h"
+#include "components/user_prefs/pref_registry_syncable.h"
 
 // static
 PrefServiceSyncable* PrefServiceSyncable::FromProfile(Profile* profile) {
   return static_cast<PrefServiceSyncable*>(profile->GetPrefs());
 }
 
 // static
 PrefServiceSyncable* PrefServiceSyncable::IncognitoFromProfile(
     Profile* profile) {
   return static_cast<PrefServiceSyncable*>(profile->GetOffTheRecordPrefs());
@@ skipping 98 matching lines @@
 
 void PrefServiceSyncable::AddRegisteredSyncablePreference(const char* path) {
   DCHECK(FindPreference(path));
   pref_sync_associator_.RegisterPref(path);
 }
 
 void PrefServiceSyncable::OnIsSyncingChanged() {
   FOR_EACH_OBSERVER(PrefServiceSyncableObserver, observer_list_,
                     OnIsSyncingChanged());
 }