PreloadCheck class for extension pre-install checks

chrome/browser/extensions/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
 import("//extensions/features/features.gni")
 import("//media/media_options.gni")
 import("//rlz/features/features.gni")
@@ skipping 449 matching lines @@
     "api/webrtc_audio_private/webrtc_audio_private_api.h",
     "api/webrtc_desktop_capture_private/webrtc_desktop_capture_private_api.cc",
     "api/webrtc_desktop_capture_private/webrtc_desktop_capture_private_api.h",
     "api/webrtc_logging_private/webrtc_logging_private_api.h",
     "api/webstore_private/webstore_private_api.cc",
     "api/webstore_private/webstore_private_api.h",
     "app_data_migrator.cc",
     "app_data_migrator.h",
     "blacklist.cc",
     "blacklist.h",
+    "blacklist_check.cc",
+    "blacklist_check.h",
     "blacklist_factory.cc",
     "blacklist_factory.h",
     "blacklist_state_fetcher.cc",
     "blacklist_state_fetcher.h",
     "blob_reader.cc",
     "blob_reader.h",
     "bookmark_app_helper.cc",
     "bookmark_app_helper.h",
     "browser_action_test_util.h",
     "browser_context_keyed_service_factories.cc",
@@ skipping 704 matching lines @@
       "api/braille_display_private/brlapi_connection.cc",
       "api/braille_display_private/brlapi_connection.h",
       "api/braille_display_private/brlapi_keycode_map.cc",
       "api/braille_display_private/brlapi_keycode_map.h",
     ]
     deps += [ "//build/linux/libbrlapi" ]
   } else {
     sources += [ "api/braille_display_private/braille_controller_stub.cc" ]
   }
 }