Fix header includes for brillo/supprocess am: 4bd46b3a58 am: c8834b9303 am: f6e0c8503f am: fe54eec9d2

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/1428106

Change-Id: I33a48682739fcef1ff770b87fc05f85452a413a1