Pass sampling to drawImageSet

Bug: skia:7650
Change-Id: I93d41ca6e5beb85e9924ea2f3e0a82c18ff51369
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/349617
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Mike Reed <reed@google.com>
26 files changed