Moved extern "C" conditional to a single file-wide condition.
Moved extern "C" conditional to a single file-wide condition.


Former-commit-id: 8045a02353bdfb24d095d287f3e6c1f39350f9de
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