change default props for PictureImage to be unknown_pixel_geometry

Bug: skia:
Change-Id: Id61460dbe3f3d21207ae05ba5adf494b0a68fe31
Reviewed-on: https://skia-review.googlesource.com/68760
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
1 file changed