add new entry-points for drawImage[rect] with samplingoptions

Change-Id: Icc2c2e4affbf4c4dba1983b069351f33487af81b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/339116
Reviewed-by: Florin Malita <fmalita@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Mike Reed <reed@google.com>
3 files changed