Update doc comments to match new enum structure.

Change-Id: I5b4fe40847112a11d6057ee7acd208879a71722f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/319190
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
4 files changed