Revert nacl_demos.cpp to master.
Revert nacl_demos.cpp to master.


Former-commit-id: 7fbb696b535e3e9a3af8de28de8222a8e3778066
Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide