Add #include Objbase.h
Add #include Objbase.h

<windows.h> alone apparently isn’t good enough under some Bazel
configurations.


Former-commit-id: 6d3ac3e09609c39d93e75a1400188d76a6c82752
Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide