hide drawpostext etc.

Bug: skia:
Change-Id: I918f732072af9a1f6f2ebd94cc53eeb5d6a0d5b8
Reviewed-on: https://skia-review.googlesource.com/c/180361
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Auto-Submit: Mike Reed <reed@google.com>
4 files changed