[gn build] Port ca69709

Author: llvmgnsyncbot

llvm/utils/gn/secondary/libcxx/include/BUILD.gn

@@ -1168,13 +1168,19 @@ if (current_toolchain == default_toolchain) {
       "__iterator/unreachable_sentinel.h",
       "__iterator/wrap_iter.h",
       "__locale",
+      "__locale_dir/check_grouping.h",
+      "__locale_dir/get_c_locale.h",
       "__locale_dir/locale_base_api.h",
       "__locale_dir/locale_base_api/android.h",
       "__locale_dir/locale_base_api/bsd_locale_fallbacks.h",
       "__locale_dir/locale_base_api/ibm.h",
       "__locale_dir/locale_base_api/musl.h",
       "__locale_dir/locale_base_api/openbsd.h",
+      "__locale_dir/messages.h",
+      "__locale_dir/money.h",
+      "__locale_dir/num.h",
       "__locale_dir/pad_and_output.h",
+      "__locale_dir/scan_keyword.h",
       "__locale_dir/support/apple.h",
       "__locale_dir/support/bsd_like.h",
       "__locale_dir/support/freebsd.h",
@@ -1183,6 +1189,9 @@ if (current_toolchain == default_toolchain) {
       "__locale_dir/support/no_locale/characters.h",
       "__locale_dir/support/no_locale/strtonum.h",
       "__locale_dir/support/windows.h",
+      "__locale_dir/time.h",
+      "__locale_dir/wbuffer_convert.h",
+      "__locale_dir/wstring_convert.h",
       "__math/abs.h",
       "__math/copysign.h",
       "__math/error_functions.h",