[MD Bookmarks] Add toasts.

chrome/browser/ui/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/chromecast_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 1053 matching lines @@
       "webui/options/startup_pages_handler.cc",
       "webui/options/startup_pages_handler.h",
       "webui/options/supervised_user_create_confirm_handler.cc",
       "webui/options/supervised_user_create_confirm_handler.h",
       "webui/options/supervised_user_import_handler.cc",
       "webui/options/supervised_user_import_handler.h",
       "webui/options/supervised_user_learn_more_handler.cc",
       "webui/options/supervised_user_learn_more_handler.h",
       "webui/options/sync_setup_handler.cc",
       "webui/options/sync_setup_handler.h",
+      "webui/plural_string_handler.cc",
+      "webui/plural_string_handler.h",
       "webui/policy_indicator_localized_strings_provider.cc",
       "webui/policy_indicator_localized_strings_provider.h",
       "webui/profile_helper.cc",
       "webui/profile_helper.h",
       "webui/profile_info_watcher.cc",
       "webui/profile_info_watcher.h",
       "webui/set_as_default_browser_ui_win.cc",
       "webui/set_as_default_browser_ui_win.h",
       "webui/settings/about_handler.cc",
       "webui/settings/about_handler.h",
@@ skipping 2519 matching lines @@
     deps += [
       "//chrome/test:test_support_ui",
       "//components/zoom",
     ]
   }
 
   if (enable_extensions) {
     deps += [ "//extensions/browser" ]
   }
 }