Implement asin and acos primitives in Raster Pipeline.

These follow the SkVM implementation very closely.

Change-Id: I0fb39f8c443e01de2140f8321c00375326be57bc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/658019
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
3 files changed