remote fonts: Validate format on deserialized glyph.

R=mtklein@google.com, herb@google.com

Bug: 949000
Change-Id: Ib17635ea34db80987a1f2b3c0e6fcc33ab2b7a6b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/206173
Commit-Queue: Khushal Sagar <khushalsagar@chromium.org>
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Auto-Submit: Khushal Sagar <khushalsagar@chromium.org>
4 files changed