[gn build] Port ee6ec2c

Author: llvmgnsyncbot

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

@@ -158,6 +158,7 @@ if (current_toolchain == default_toolchain) {
       "__algorithm/pstl_backends/cpu_backends/serial.h",
       "__algorithm/pstl_backends/cpu_backends/thread.h",
       "__algorithm/pstl_backends/cpu_backends/transform.h",
+      "__algorithm/pstl_backends/cpu_backends/transform_reduce.h",
       "__algorithm/pstl_copy.h",
       "__algorithm/pstl_fill.h",
       "__algorithm/pstl_find.h",
@@ -593,6 +594,8 @@ if (current_toolchain == default_toolchain) {
       "__numeric/iota.h",
       "__numeric/midpoint.h",
       "__numeric/partial_sum.h",
+      "__numeric/pstl_reduce.h",
+      "__numeric/pstl_transform_reduce.h",
       "__numeric/reduce.h",
       "__numeric/transform_exclusive_scan.h",
       "__numeric/transform_inclusive_scan.h",
@@ -860,6 +863,7 @@ if (current_toolchain == default_toolchain) {
       "__type_traits/nat.h",
       "__type_traits/negation.h",
       "__type_traits/noexcept_move_assign_container.h",
+      "__type_traits/operation_traits.h",
       "__type_traits/predicate_traits.h",
       "__type_traits/promote.h",
       "__type_traits/rank.h",