[gn build] Port 7d426a3

Author: llvmgnsyncbot

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

@@ -183,6 +183,8 @@ if (current_toolchain == default_toolchain) {
       "__algorithm/ranges_replace.h",
       "__algorithm/ranges_replace_if.h",
       "__algorithm/ranges_reverse.h",
+      "__algorithm/ranges_reverse_copy.h",
+      "__algorithm/ranges_rotate_copy.h",
       "__algorithm/ranges_set_difference.h",
       "__algorithm/ranges_set_intersection.h",
       "__algorithm/ranges_sort.h",