Move content_settings_custom_extension_provider.* to c/b/extensions/api/content_settings/

chrome/chrome_browser.gypi

 # Copyright 2012 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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 722 matching lines @@
       'browser/media_galleries/fileapi/safe_picasa_album_table_reader.cc',
       'browser/media_galleries/fileapi/safe_picasa_album_table_reader.h',
       'browser/media_galleries/fileapi/safe_picasa_albums_indexer.cc',
       'browser/media_galleries/fileapi/safe_picasa_albums_indexer.h',
     ],
     'chrome_browser_extensions_sources': [
       'browser/accessibility/accessibility_extension_api.cc',
       'browser/accessibility/accessibility_extension_api.h',
       'browser/autocomplete/keyword_extensions_delegate_impl.cc',
       'browser/autocomplete/keyword_extensions_delegate_impl.h',
-      'browser/content_settings/content_settings_custom_extension_provider.cc',
-      'browser/content_settings/content_settings_custom_extension_provider.h',
       'browser/content_settings/content_settings_internal_extension_provider.cc',
       'browser/content_settings/content_settings_internal_extension_provider.h',
       'browser/drive/drive_app_registry.cc',
       'browser/drive/drive_app_registry.h',
       'browser/drive/drive_app_registry_observer.h',
       'browser/drive/drive_api_service.cc',
       'browser/drive/drive_api_service.h',
       'browser/drive/drive_api_util.cc',
       'browser/drive/drive_api_util.h',
       'browser/drive/drive_notification_manager.cc',
@@ skipping 2908 matching lines @@
           'variables': {
             'proto_in_dir': 'browser/sync_file_system/drive_backend',
             'proto_out_dir': 'chrome/browser/sync_file_system/drive_backend',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
     },],
   ],
 }