SkPictureImageGenerator.h include guard

Change-Id: I6d9894ce3db427985c000b431fb79388c211b70c
Reviewed-on: https://skia-review.googlesource.com/8455
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
1 file changed