Restore affine bitmap procs

This effectively reverts http://review.skia.org/684577
When decoding images with EXIF rotation, we used to hit
this fast-path. When it was removed, some benchmarks
regressed significantly.

Bug: b/329003512
Change-Id: I941d7fb3e9760711cae643ea681218e1aeee4c64
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/841157
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
5 files changed