virtual for saveCamera

Change-Id: Iff486ae8dbf94971cfd513954299e2635c13ef1e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/281585
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Reed <reed@google.com>
8 files changed