Revert[4] "hide nested hinting enum"

This reverts commit 8e12cc6dfe3801e5a32b7bfa02a39c48fa03c207.

Bug: skia:
Change-Id: Ice5e3480adad75ab77d97f7366495015f36b15a6
Reviewed-on: https://skia-review.googlesource.com/c/169520
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
30 files changed