Sample/Camera: make it work without /skimages

Change-Id: I7e876ffb7e59ccedb3da80ef3cd5ca385ab89873
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/225547
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
1 file changed