[cxxmodules] Add missing header file.
[cxxmodules] Add missing header file.

This reduces the duplications in all modules reducing the overall
modules size by 1MB.

root-mirror/root,olifre/root,olifre/root,karies/root,olifre/root,karies/root,olifre/root,olifre/root,root-mirror/root,karies/root,olifre/root,olifre/root,olifre/root,olifre/root,karies/root,root-mirror/root,karies/root,root-mirror/root,karies/root,karies/root,olifre/root,karies/root,karies/root,root-mirror/root,olifre/root,karies/root,root-mirror/root,root-mirror/root,root-mirror/root,root-mirror/root,root-mirror/root,karies/root,root-mirror/root