Disable RAW test on Chrome OS, Windows

TBR=scroggo@google.com

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1633763002

Review URL: https://codereview.chromium.org/1633763002
1 file changed