Add a base dependency to browsing_data_ui.

components/browsing_data_ui.gypi

 # Copyright 2016 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.
 
 {
   'targets': [
     {
       # GN version: //components/browsing_data_ui
       'target_name': 'browsing_data_ui',
       'type': 'static_library',
       'dependencies': [
+        '../base/base.gyp:base',
         'browser_sync_browser',
         'history_core_browser',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         # Note: sources list duplicated in GN build.
         'browsing_data_ui/history_notice_utils.cc',
         'browsing_data_ui/history_notice_utils.h',
       ],
     },
   ],
 }