SkCodec: Add Android-only CodecPreference

This allows the Android framework to choose a priority for HW or
SW codecs for formats for which Android has both options (e.g.
HEIF).

Bug: b/240347107
Change-Id: Ia804027d729dc0ff3b2dea947642df64fbc32bbc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/573639
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
3 files changed