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

chrome/browser/chromeos/login/oauth2_login_manager.cc

 // Copyright (c) 2013 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/chromeos/login/oauth2_login_manager.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/policy/browser_policy_connector.h"
-#include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/token_service.h"
 #include "chrome/browser/signin/token_service_factory.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 "google_apis/gaia/gaia_constants.h"
 #include "net/url_request/url_request_context_getter.h"
 
 namespace {
 
 // Prefs registered only for migration purposes.
 const char kOAuth1Token[] = "settings.account.oauth1_token";
 const char kOAuth1Secret[] = "settings.account.oauth1_secret";
 
@@ skipping 248 matching lines @@
 }
 
 void OAuth2LoginManager::StartTokenService(
     const GaiaAuthConsumer::ClientLoginResult& gaia_credentials) {
   TokenService* token_service = SetupTokenService();
   token_service->UpdateCredentials(gaia_credentials);
   CompleteAuthentication();
 }
 
 }  // namespace chromeos