[gn build] Port 475cbf0

Author: llvmgnsyncbot

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

@@ -132,6 +132,7 @@ if (current_toolchain == default_toolchain) {
       "__algorithm/next_permutation.h",
       "__algorithm/none_of.h",
       "__algorithm/nth_element.h",
+      "__algorithm/out_value_result.h",
       "__algorithm/partial_sort.h",
       "__algorithm/partial_sort_copy.h",
       "__algorithm/partition.h",
@@ -1701,6 +1702,7 @@ if (current_toolchain == default_toolchain) {
       "__numeric/midpoint.h",
       "__numeric/partial_sum.h",
       "__numeric/pstl.h",
+      "__numeric/ranges_iota.h",
       "__numeric/reduce.h",
       "__numeric/saturation_arithmetic.h",
       "__numeric/transform_exclusive_scan.h",