Merge commit '19e516fbed80' from llvm.org/main into next

Author: git apple-llvm automerger

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

@@ -361,6 +361,7 @@ if (current_toolchain == default_toolchain) {
       "__chrono/parser_std_format_spec.h",
       "__chrono/statically_widen.h",
       "__chrono/steady_clock.h",
+      "__chrono/sys_info.h",
       "__chrono/system_clock.h",
       "__chrono/time_point.h",
       "__chrono/time_zone.h",