Register delete time period pref for CBD on iOS

ios/chrome/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.
 
 import("//build/config/features.gni")
 import("//ios/web/js_compile.gni")
 import("//third_party/protobuf/proto_library.gni")
 
 declare_args() {
   google_test_gaia_client_id = ""
@@ skipping 584 matching lines @@
     "//base",
     "//base:i18n",
     "//breakpad:client",
     "//components/about_handler",
     "//components/autofill/core/browser",
     "//components/autofill/core/common",
     "//components/autofill/ios/browser",
     "//components/bookmarks/browser",
     "//components/browser_sync/browser",
     "//components/browser_sync/common",
+    "//components/browsing_data/core",
     "//components/browsing_data_ui",
     "//components/component_updater",
     "//components/content_settings/core/browser",
     "//components/content_settings/core/common",
     "//components/cookie_config",
     "//components/crash/core/browser",
     "//components/crash/core/common",
     "//components/dom_distiller/core",
     "//components/dom_distiller/ios",
     "//components/favicon/core",
@@ skipping 220 matching lines @@
     "//ios/public/provider/chrome/browser:test_support",
     "//ios/web",
     "//net:test_support",
     "//sync",
     "//testing/gmock",
     "//testing/gtest",
     "//ui/base",
     "//url",
   ]
 }