[skotty] Pass animation frame/time as float

No reason to punt through SkMSec, we just lose precision.

TBR=
Change-Id: I2f61e49658701a3b5a675f3dd44543fd9aa98708
Reviewed-on: https://skia-review.googlesource.com/92600
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
2 files changed