Add infrastructure for a USB device blocklist.

chrome/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/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 1266 matching lines @@
     "translate/language_model_factory.cc",
     "translate/language_model_factory.h",
     "translate/translate_accept_languages_factory.cc",
     "translate/translate_accept_languages_factory.h",
     "translate/translate_service.cc",
     "translate/translate_service.h",
     "undo/bookmark_undo_service_factory.cc",
     "undo/bookmark_undo_service_factory.h",
     "update_client/chrome_update_query_params_delegate.cc",
     "update_client/chrome_update_query_params_delegate.h",
+    "usb/usb_blocklist.cc",
+    "usb/usb_blocklist.h",
     "usb/usb_chooser_context.cc",
     "usb/usb_chooser_context.h",
     "usb/usb_chooser_context_factory.cc",
     "usb/usb_chooser_context_factory.h",
     "usb/usb_tab_helper.cc",
     "usb/usb_tab_helper.h",
     "usb/web_usb_histograms.cc",
     "usb/web_usb_histograms.h",
     "usb/web_usb_permission_provider.cc",
     "usb/web_usb_permission_provider.h",
@@ skipping 3150 matching lines @@
   # linking all of the test support.
   static_library("pepper_cdm_test_constants") {
     testonly = true
     visibility = [ "//chrome/*" ]
     sources = [
       "media/pepper_cdm_test_constants.cc",
       "media/pepper_cdm_test_constants.h",
     ]
   }
 }