Move ChromeRequirementsChecker to //extensions as a PreloadCheck

chrome/common/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/buildflag_header.gni")
 import("//build/util/process_version.gni")
 import("//chrome/common/features.gni")
 import("//chrome/process_version_rc_template.gni")  # For branding_file_path.
 import("//extensions/features/features.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
@@ skipping 234 matching lines @@
       "cast_messages.cc",
       "cast_messages.h",
       "extensions/api/commands/commands_handler.cc",
       "extensions/api/commands/commands_handler.h",
       "extensions/api/extension_action/action_info.cc",
       "extensions/api/extension_action/action_info.h",
       "extensions/api/notifications/notification_style.cc",
       "extensions/api/notifications/notification_style.h",
       "extensions/api/omnibox/omnibox_handler.cc",
       "extensions/api/omnibox/omnibox_handler.h",
-      "extensions/api/plugins/plugins_handler.cc",
-      "extensions/api/plugins/plugins_handler.h",
       "extensions/api/speech/tts_engine_manifest_handler.cc",
       "extensions/api/speech/tts_engine_manifest_handler.h",
       "extensions/api/spellcheck/spellcheck_handler.cc",
       "extensions/api/spellcheck/spellcheck_handler.h",
       "extensions/api/storage/storage_schema_manifest_handler.cc",
       "extensions/api/storage/storage_schema_manifest_handler.h",
       "extensions/api/system_indicator/system_indicator_handler.cc",
       "extensions/api/system_indicator/system_indicator_handler.h",
       "extensions/api/url_handlers/url_handlers_parser.cc",
       "extensions/api/url_handlers/url_handlers_parser.h",
@@ skipping 464 matching lines @@
 mojom("instant_mojom") {
   sources = [
     "instant.mojom",
   ]
 
   public_deps = [
     "//mojo/common:common_custom_types",
     "//url/mojo:url_mojom_gurl",
   ]
 }