Add SK_NO_FONTS check around font uses in skottie

Prerequisite to cl/297131877

Change-Id: Icd58c69fd53b703e43d67f4a1a9bafe096943edc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/273765
Reviewed-by: Florin Malita <fmalita@chromium.org>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Nathaniel Nifong <nifong@google.com>
2 files changed