Remove advance[XY]Fixed getters.

Reverts https://codereview.chromium.org/1772863002 after updating Android.

BUG=skia:4632
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1842453002

Review URL: https://codereview.chromium.org/1842453002
1 file changed