Convert chrome://extensions to a settings page within the options pages.

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': 'static_library',
       'dependencies': [
@@ skipping 3605 matching lines @@
         'browser/ui/webui/options/chromeos/virtual_keyboard_manager_handler.cc',
         'browser/ui/webui/options/chromeos/virtual_keyboard_manager_handler.h',
         'browser/ui/webui/options/clear_browser_data_handler.cc',
         'browser/ui/webui/options/clear_browser_data_handler.h',
         'browser/ui/webui/options/content_settings_handler.cc',
         'browser/ui/webui/options/content_settings_handler.h',
         'browser/ui/webui/options/cookies_view_handler.cc',
         'browser/ui/webui/options/cookies_view_handler.h',
         'browser/ui/webui/options/core_options_handler.cc',
         'browser/ui/webui/options/core_options_handler.h',
+        'browser/ui/webui/options/extension_settings_handler.h',
+        'browser/ui/webui/options/extension_settings_handler.cc',
         'browser/ui/webui/options/font_settings_handler.cc',
         'browser/ui/webui/options/font_settings_handler.h',
         'browser/ui/webui/options/font_settings_utils.h',
         'browser/ui/webui/options/font_settings_utils_gtk.cc',
         'browser/ui/webui/options/font_settings_utils_mac.mm',
         'browser/ui/webui/options/font_settings_utils_win.cc',
         'browser/ui/webui/options/handler_options_handler.cc',
         'browser/ui/webui/options/handler_options_handler.h',
         'browser/ui/webui/options/import_data_handler.cc',
         'browser/ui/webui/options/import_data_handler.h',
         'browser/ui/webui/options/intents_settings_handler.cc',
         'browser/ui/webui/options/intents_settings_handler.h',
         'browser/ui/webui/options/language_options_handler.cc',
         'browser/ui/webui/options/language_options_handler.h',
         'browser/ui/webui/options/language_options_handler_common.cc',
         'browser/ui/webui/options/language_options_handler_common.h',
         'browser/ui/webui/options/manage_profile_handler.cc',
         'browser/ui/webui/options/manage_profile_handler.h',
         'browser/ui/webui/options/options_sync_setup_handler.cc',
         'browser/ui/webui/options/options_sync_setup_handler.h',
         'browser/ui/webui/options/options_ui.cc',
         'browser/ui/webui/options/options_ui.h',
         'browser/ui/webui/options/password_manager_handler.cc',
         'browser/ui/webui/options/password_manager_handler.h',
+        'browser/ui/webui/options/pack_extension_handler.h',
+        'browser/ui/webui/options/pack_extension_handler.cc',
         'browser/ui/webui/options/personal_options_handler.cc',
         'browser/ui/webui/options/personal_options_handler.h',
         'browser/ui/webui/options/search_engine_manager_handler.cc',
         'browser/ui/webui/options/search_engine_manager_handler.h',
         'browser/ui/webui/options/stop_syncing_handler.cc',
         'browser/ui/webui/options/stop_syncing_handler.h',
         'browser/ui/webui/plugins_ui.cc',
         'browser/ui/webui/plugins_ui.h',
         'browser/ui/webui/print_preview_data_source.cc',
         'browser/ui/webui/print_preview_data_source.h',
@@ skipping 1235 matching lines @@
               # weak imports in dependents, who still must #include
               # closure_blocks_leopard_compat.h to get weak imports.
               'type': 'none',
             }],
           ],
         },
       ],
     }],
   ],
 }