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

chrome/browser/ui/ash/chrome_launcher_prefs.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/ui/ash/chrome_launcher_prefs.h"
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
-#include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/common/pref_names.h"
+#include "components/user_prefs/pref_registry_syncable.h"
 
 namespace {
 
 // App ID of default pinned apps.
 const char* kDefaultPinnedApps[] = {
   "pjkljhegncpnkpknbcohdijeoejaedia",  // Gmail
   "coobgpohoikkiipiblmjeljniedjpjpf",  // Search
   "apdfllckaahabafndbhieahigkjlhalf",  // Doc
   "blpcfgokakmgnkcojhhkbfbldkacnbeo",  // YouTube
 };
@@ skipping 45 matching lines @@
                                      PrefRegistrySyncable::UNSYNCABLE_PREF);
 }
 
 base::DictionaryValue* CreateAppDict(const std::string& app_id) {
   scoped_ptr<base::DictionaryValue> app_value(new base::DictionaryValue);
   app_value->SetString(kPinnedAppsPrefAppIDPath, app_id);
   return app_value.release();
 }
 
 }  // namespace ash