Show a different banner in chrome://settings for extension-controlled 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': 'static_library',
       'dependencies': [
@@ skipping 1612 matching lines @@
         'browser/policy/dummy_configuration_policy_provider.cc',
         'browser/policy/dummy_configuration_policy_provider.h',
         'browser/policy/enterprise_install_attributes.cc',
         'browser/policy/enterprise_install_attributes.h',
         'browser/policy/enterprise_metrics.cc',
         'browser/policy/enterprise_metrics.h',
         'browser/policy/file_based_policy_loader.cc',
         'browser/policy/file_based_policy_loader.h',
         'browser/policy/file_based_policy_provider.cc',
         'browser/policy/file_based_policy_provider.h',
-        'browser/policy/managed_prefs_banner_base.cc',
-        'browser/policy/managed_prefs_banner_base.h',
         'browser/policy/policy_notifier.cc',
         'browser/policy/policy_notifier.h',
         'browser/policy/policy_path_parser.h',
         'browser/policy/policy_path_parser_mac.mm',
         'browser/policy/policy_path_parser_posix.cc',
         'browser/policy/policy_path_parser_win.cc',
         'browser/policy/user_policy_cache.cc',
         'browser/policy/user_policy_cache.h',
         'browser/policy/user_policy_disk_cache.cc',
         'browser/policy/user_policy_disk_cache.h',
@@ skipping 1891 matching lines @@
         '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/import_data_handler.cc',
         'browser/ui/webui/options/import_data_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/options_managed_banner_handler.cc',
-        'browser/ui/webui/options/options_managed_banner_handler.h',
-        'browser/ui/webui/options/options_managed_banner_handler_stub.cc',
         '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/handler_options_handler.cc',
         'browser/ui/webui/options/handler_options_handler.h',
         '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',
@@ skipping 103 matching lines @@
           ],
         }],
         ['debug_devtools==1', {
           'defines': [
             'DEBUG_DEVTOOLS=1',
           ],
         }],
         ['configuration_policy==1', {
            'sources!': [
              'browser/policy/policy_stubs.cc',
-             'browser/ui/webui/options/options_managed_banner_handler_stub.cc',
            ],
          }, {
            'sources/': [
              ['exclude', '^browser/policy/'],
              ['include', '^browser/policy/policy_stubs.cc'],
-             ['exclude', '^browser/ui/webui/options/options_managed_banner_handler.cc'],
            ],
         }],
         ['safe_browsing==1', {
           'defines': [
             'ENABLE_SAFE_BROWSING',
           ],
         }, {  # safe_browsing==0
           'dependencies!': [
             'safe_browsing_report_proto',
           ],
@@ skipping 1101 matching lines @@
       ],
       'export_dependent_settings': [
         'in_memory_url_index_cache_proto',
       ],
       # This target exports a hard dependency because it includes generated
       # header files.
       'hard_dependency': 1,
     },
   ],
 }