Introduce incognito preference settings.

chrome/chrome_browser.gypi

 # Copyright (c) 2011 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 1130 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_pref_store.h',
         'browser/extensions/extension_pref_store.cc',
+        'browser/extensions/extension_pref_value_map.h',
+        'browser/extensions/extension_pref_value_map.cc',
         'browser/extensions/extension_prefs.cc',
         'browser/extensions/extension_prefs.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',
@@ skipping 868 matching lines @@
         'browser/power_save_blocker_stub.cc',
         'browser/power_save_blocker_win.cc',
         'browser/ppapi_plugin_process_host.cc',
         'browser/ppapi_plugin_process_host.h',
         'browser/preferences_mac.cc',
         'browser/preferences_mac.h',
         'browser/prefs/browser_prefs.cc',
         'browser/prefs/browser_prefs.h',
         'browser/prefs/command_line_pref_store.cc',
         'browser/prefs/command_line_pref_store.h',
+        'browser/prefs/default_pref_store.cc',
         'browser/prefs/default_pref_store.h',
+        'browser/prefs/overlay_persistent_pref_store.cc',
+        'browser/prefs/overlay_persistent_pref_store.h',
         'browser/prefs/pref_member.cc',
         'browser/prefs/pref_member.h',
         'browser/prefs/pref_notifier.h',
         'browser/prefs/pref_notifier_impl.cc',
         'browser/prefs/pref_notifier_impl.h',
         'browser/prefs/pref_change_registrar.cc',
         'browser/prefs/pref_change_registrar.h',
         'browser/prefs/pref_service.cc',
         'browser/prefs/pref_service.h',
         'browser/prefs/pref_set_observer.cc',
@@ skipping 2476 matching lines @@
       ],
     },
   ],
 }
 
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