PreloadCheck class for extension pre-install checks

chrome/test/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/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 3498 matching lines @@
     "//components/webdata_services:test_support",
     "//content/app/resources",
     "//content/public/app:both",
     "//content/test:test_support",
     "//courgette:courgette_lib",
     "//crypto:platform",
     "//crypto:test_support",
     "//device/base:mocks",
     "//device/bluetooth:mocks",
     "//device/usb:test_support",
+    "//extensions/browser:test_support",
     "//extensions/features",
     "//google_apis",
     "//gpu:test_support",
     "//media:media_features",
     "//media:test_support",
     "//net",
     "//net:test_support",
     "//ppapi/features",
     "//skia",
     "//testing/gmock",
@@ skipping 375 matching lines @@
       "../browser/extensions/api/sockets_tcp_server/sockets_tcp_server_api_unittest.cc",
       "../browser/extensions/api/storage/policy_value_store_unittest.cc",
       "../browser/extensions/api/storage/settings_sync_unittest.cc",
       "../browser/extensions/api/streams_private/streams_private_manifest_unittest.cc",
       "../browser/extensions/api/tabs/tabs_api_unittest.cc",
       "../browser/extensions/api/web_navigation/frame_navigation_state_unittest.cc",
       "../browser/extensions/api/web_request/web_request_api_unittest.cc",
       "../browser/extensions/api/web_request/web_request_event_details_unittest.cc",
       "../browser/extensions/api/web_request/web_request_permissions_unittest.cc",
       "../browser/extensions/app_data_migrator_unittest.cc",
+      "../browser/extensions/blacklist_check_unittest.cc",
       "../browser/extensions/blacklist_state_fetcher_unittest.cc",
       "../browser/extensions/bookmark_app_helper_unittest.cc",
       "../browser/extensions/chrome_app_sorting_unittest.cc",
       "../browser/extensions/chrome_component_extension_resource_manager_unittest.cc",
       "../browser/extensions/chrome_extension_function_unittest.cc",
       "../browser/extensions/chrome_info_map_unittest.cc",
       "../browser/extensions/component_loader_unittest.cc",
       "../browser/extensions/convert_user_script_unittest.cc",
       "../browser/extensions/convert_web_app_unittest.cc",
       "../browser/extensions/default_apps_unittest.cc",
@@ skipping 1259 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }