[gn build] Port 065dc48

Author: llvmgnsyncbot

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

@@ -670,6 +670,7 @@ if (current_toolchain == default_toolchain) {
       "__ranges/access.h",
       "__ranges/all.h",
       "__ranges/as_rvalue_view.h",
+      "__ranges/chunk_by_view.h",
       "__ranges/common_view.h",
       "__ranges/concepts.h",
       "__ranges/container_compatible_range.h",