[Signin Error Dialog] (2/3) Added handlers and UI constructors

chrome/browser/ui/BUILD.gn

Index: chrome/browser/ui/BUILD.gn
diff --git a/chrome/browser/ui/BUILD.gn b/chrome/browser/ui/BUILD.gn
index 5c640ac1f8dd662b9841337d9aaeebdcc17e31a2..ed676b850a4a5947de7a94f14b33eb4a18b6dfa6 100644
--- a/chrome/browser/ui/BUILD.gn
+++ b/chrome/browser/ui/BUILD.gn
@@ -1102,8 +1102,6 @@ split_static_library("ui") {
       "webui/settings/site_settings_handler.h",
       "webui/settings_utils.cc",
       "webui/settings_utils.h",
-      "webui/signin/get_auth_frame.cc",
-      "webui/signin/get_auth_frame.h",
       "webui/signin/login_ui_service.cc",
       "webui/signin/login_ui_service.h",
       "webui/signin/login_ui_service_factory.cc",
@@ -1112,6 +1110,8 @@ split_static_library("ui") {
       "webui/signin/profile_signin_confirmation_dialog.h",
       "webui/signin/profile_signin_confirmation_ui.cc",
       "webui/signin/profile_signin_confirmation_ui.h",
+      "webui/signin/signin_utils.cc",
+      "webui/signin/signin_utils.h",
       "webui/site_settings_helper.cc",
       "webui/site_settings_helper.h",
       "webui/sync_file_system_internals/dump_database_handler.cc",
@@ -1915,6 +1915,10 @@ split_static_library("ui") {
       "webui/signin/md_user_manager_ui.h",
       "webui/signin/signin_create_profile_handler.cc",
       "webui/signin/signin_create_profile_handler.h",
+      "webui/signin/signin_error_handler.cc",
+      "webui/signin/signin_error_handler.h",
+      "webui/signin/signin_error_ui.cc",
+      "webui/signin/signin_error_ui.h",
       "webui/signin/signin_supervised_user_import_handler.cc",
       "webui/signin/signin_supervised_user_import_handler.h",
       "webui/signin/sync_confirmation_handler.cc",