Add a scoped notifier for pref dictionaries / lists.

chrome/chrome_browser.gypi

 # Copyright (c) 2010 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': [
     {
       'target_name': 'browser',
       'type': '<(library)',
       'msvs_guid': '5BF908A7-68FB-4A4B-99E3-8C749F1FE4EA',
@@ skipping 1841 matching lines @@
         'browser/safe_browsing/safe_browsing_service.cc',
         'browser/safe_browsing/safe_browsing_service.h',
         'browser/safe_browsing/safe_browsing_store.cc',
         'browser/safe_browsing/safe_browsing_store.h',
         'browser/safe_browsing/safe_browsing_store_file.cc',
         'browser/safe_browsing/safe_browsing_store_file.h',
         'browser/safe_browsing/safe_browsing_store_sqlite.cc',
         'browser/safe_browsing/safe_browsing_store_sqlite.h',
         'browser/safe_browsing/safe_browsing_util.cc',
         'browser/safe_browsing/safe_browsing_util.h',
+        'browser/scoped_pref_update.cc',
+        'browser/scoped_pref_update.h',
         'browser/search_engines/edit_search_engine_controller.cc',
         'browser/search_engines/edit_search_engine_controller.h',
         'browser/search_engines/keyword_editor_controller.cc',
         'browser/search_engines/keyword_editor_controller.h',
         'browser/search_engines/template_url.cc',
         'browser/search_engines/template_url.h',
         'browser/search_engines/template_url_fetcher.cc',
         'browser/search_engines/template_url_fetcher.h',
         'browser/search_engines/template_url_model.cc',
         'browser/search_engines/template_url_model.h',
@@ skipping 1328 matching lines @@
       ]
     },
   ],
 }
 
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