DOMUI prefs: Add and wire up a stub overlay for adding a startup page.

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 1056 matching lines @@
         'browser/dock_info_win.cc',
         'browser/dock_info.cc',
         'browser/dock_info.h',
         'browser/dom_operation_notification_details.h',
         'browser/dom_ui/app_launcher_handler.cc',
         'browser/dom_ui/app_launcher_handler.h',
         'browser/dom_ui/bookmarks_ui.cc',
         'browser/dom_ui/bookmarks_ui.h',
         'browser/dom_ui/chrome_url_data_manager.cc',
         'browser/dom_ui/chrome_url_data_manager.h',
+        'browser/dom_ui/add_startup_page_handler.cc',
+        'browser/dom_ui/add_startup_page_handler.h',
         'browser/dom_ui/advanced_options_handler.cc',
         'browser/dom_ui/advanced_options_handler.h',
         'browser/dom_ui/advanced_options_utils_mac.mm',
         'browser/dom_ui/advanced_options_utils_mac.h',
         'browser/dom_ui/browser_options_handler.cc',
         'browser/dom_ui/browser_options_handler.h',
         'browser/dom_ui/clear_browser_data_handler.cc',
         'browser/dom_ui/clear_browser_data_handler.h',
         'browser/dom_ui/content_settings_handler.cc',
         'browser/dom_ui/content_settings_handler.h',
@@ skipping 2584 matching lines @@
       ],
     },
   ],
 }
 
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 # tab-width:2
 # indent-tabs-mode:nil
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