Add an ExtensionPrefStore, layered between the user prefs nad the managed pre...

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 1187 matching lines @@
         'browser/extensions/extension_omnibox_api.cc',
         'browser/extensions/extension_omnibox_api.h',
         'browser/extensions/extension_page_actions_module.cc',
         'browser/extensions/extension_page_actions_module.h',
         'browser/extensions/extension_page_actions_module_constants.cc',
         'browser/extensions/extension_page_actions_module_constants.h',
         'browser/extensions/extension_popup_api.cc',
         'browser/extensions/extension_popup_api.h',
         'browser/extensions/extension_prefs.cc',
         'browser/extensions/extension_prefs.h',
+        'browser/extensions/extension_pref_store.cc',
+        'browser/extensions/extension_pref_store.h',
         'browser/extensions/extension_process_manager.cc',
         'browser/extensions/extension_process_manager.h',
         'browser/extensions/extension_processes_api.cc',
         'browser/extensions/extension_processes_api.h',
         'browser/extensions/extension_processes_api_constants.cc',
         'browser/extensions/extension_processes_api_constants.h',
         'browser/extensions/extension_protocols.cc',
         'browser/extensions/extension_protocols.h',
         'browser/extensions/extension_rlz_module.cc',
         'browser/extensions/extension_rlz_module.h',
@@ skipping 2338 matching lines @@
       ],
     },
   ],
 }
 
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