Query the existence other forms of browsing history.

sync/protocol/protocol.gypi

 # Copyright 2015 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': {
     # The directory that contains the sync protocol buffer definitions.
     # This variable can be overridden for other builds that require the proto
     # files to be stored in an intermediate directory.
     'sync_proto_sources_dir%': '.',
@@ skipping 16 matching lines @@
       '<(sync_proto_sources_dir)/encryption.proto',
       '<(sync_proto_sources_dir)/entity_metadata.proto',
       '<(sync_proto_sources_dir)/experiment_status.proto',
       '<(sync_proto_sources_dir)/experiments_specifics.proto',
       '<(sync_proto_sources_dir)/extension_setting_specifics.proto',
       '<(sync_proto_sources_dir)/extension_specifics.proto',
       '<(sync_proto_sources_dir)/favicon_image_specifics.proto',
       '<(sync_proto_sources_dir)/favicon_tracking_specifics.proto',
       '<(sync_proto_sources_dir)/get_updates_caller_info.proto',
       '<(sync_proto_sources_dir)/history_delete_directive_specifics.proto',
+      '<(sync_proto_sources_dir)/history_status.proto',
       '<(sync_proto_sources_dir)/nigori_specifics.proto',
       '<(sync_proto_sources_dir)/managed_user_setting_specifics.proto',
       '<(sync_proto_sources_dir)/managed_user_shared_setting_specifics.proto',
       '<(sync_proto_sources_dir)/managed_user_specifics.proto',
       '<(sync_proto_sources_dir)/managed_user_whitelist_specifics.proto',
       '<(sync_proto_sources_dir)/password_specifics.proto',
       '<(sync_proto_sources_dir)/preference_specifics.proto',
       '<(sync_proto_sources_dir)/priority_preference_specifics.proto',
       '<(sync_proto_sources_dir)/search_engine_specifics.proto',
       '<(sync_proto_sources_dir)/session_specifics.proto',
       '<(sync_proto_sources_dir)/sync.proto',
       '<(sync_proto_sources_dir)/sync_enums.proto',
       '<(sync_proto_sources_dir)/synced_notification_app_info_specifics.proto',
       '<(sync_proto_sources_dir)/synced_notification_specifics.proto',
       '<(sync_proto_sources_dir)/test.proto',
       '<(sync_proto_sources_dir)/theme_specifics.proto',
       '<(sync_proto_sources_dir)/typed_url_specifics.proto',
       '<(sync_proto_sources_dir)/unique_position.proto',
       '<(sync_proto_sources_dir)/wifi_credential_specifics.proto',
     ],
   },
 }