Move ChromeRequirementsChecker to //extensions as a PreloadCheck

extensions/browser/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("//extensions/features/features.gni")
 
 group("browser") {
   public_deps = [
     "//extensions/browser:browser_context_keyed_service_factories",
@@ skipping 226 matching lines @@
       "process_manager_factory.h",
       "process_manager_observer.h",
       "process_map.cc",
       "process_map.h",
       "process_map_factory.cc",
       "process_map_factory.h",
       "quota_service.cc",
       "quota_service.h",
       "renderer_startup_helper.cc",
       "renderer_startup_helper.h",
+      "requirements_checker.cc",
       "requirements_checker.h",
       "runtime_data.cc",
       "runtime_data.h",
       "sandboxed_unpacker.cc",
       "sandboxed_unpacker.h",
       "script_execution_observer.h",
       "script_executor.cc",
       "script_executor.h",
       "serial_extension_host_queue.cc",
       "serial_extension_host_queue.h",
@@ skipping 186 matching lines @@
     "image_loader_unittest.cc",
     "info_map_unittest.cc",
     "lazy_background_task_queue_unittest.cc",
     "load_monitoring_extension_host_queue_unittest.cc",
     "management_policy_unittest.cc",
     "mojo/keep_alive_impl_unittest.cc",
     "policy_check_unittest.cc",
     "process_manager_unittest.cc",
     "process_map_unittest.cc",
     "quota_service_unittest.cc",
+    "requirements_checker_unittest.cc",
     "runtime_data_unittest.cc",
     "sandboxed_unpacker_unittest.cc",
     "updater/update_service_unittest.cc",
     "value_store/leveldb_scoped_database_unittest.cc",
     "value_store/leveldb_value_store_unittest.cc",
     "value_store/testing_value_store_unittest.cc",
     "value_store/value_store_change_unittest.cc",
     "value_store/value_store_frontend_unittest.cc",
     "value_store/value_store_unittest.cc",
     "value_store/value_store_unittest.h",
@@ skipping 30 matching lines @@
     "//net:test_support",
     "//third_party/leveldatabase",
     "//third_party/zlib:zip",
   ]
 
   if (is_chromeos) {
     sources += [ "api/webcam_private/visca_webcam_unittest.cc" ]
     deps += [ "//chromeos:test_support" ]
   }
 }