Update GN build files for new prefs location.

components/password_manager/sync/browser/BUILD.gn

 # Copyright 2015 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.
 
 source_set("browser") {
   sources = [
     "password_data_type_controller.cc",
     "password_data_type_controller.h",
     "password_manager_setting_migrator_service.cc",
     "password_manager_setting_migrator_service.h",
     "password_model_worker.cc",
     "password_model_worker.h",
     "password_sync_util.cc",
     "password_sync_util.h",
     "sync_credentials_filter.cc",
     "sync_credentials_filter.h",
   ]
 
   deps = [
     "//base",
-    "//base:prefs",
     "//components/autofill/core/common",
     "//components/keyed_service/core",
     "//components/password_manager/core/browser",
     "//components/password_manager/core/common",
+    "//components/prefs",
     "//components/signin/core/browser",
     "//components/sync_driver",
     "//components/syncable_prefs",
     "//google_apis",
     "//net",
     "//url",
   ]
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = [
     "password_manager_setting_migrator_service_unittest.cc",
     "password_sync_util_unittest.cc",
     "sync_credentials_filter_unittest.cc",
     "sync_username_test_base.cc",
     "sync_username_test_base.h",
   ]
   deps = [
     ":browser",
     "//base",
-    "//base:prefs",
     "//base/test:test_support",
     "//components/autofill/core/common",
     "//components/password_manager/core/browser:test_support",
     "//components/password_manager/core/common",
     "//components/pref_registry:test_support",
+    "//components/prefs",
     "//components/signin/core/browser:test_support",
     "//components/signin/core/common",
     "//components/sync_driver:test_support",
     "//components/syncable_prefs",
     "//components/syncable_prefs:test_support",
     "//sync:test_support_sync_api",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }