Check SKP file version, return error string to JS caller
bug:skia:10579

Change-Id: I1419febc4846e33bce293e14a4666337d7965305
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/310108
Commit-Queue: Nathaniel Nifong <nifong@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
2 files changed