rm ok

I'm not really using it much anymore.
Time to dedup and fold its ideas into DM.

Change-Id: I40a238c9083460e1b7aee459757f867dfd3d79af
Reviewed-on: https://skia-review.googlesource.com/107800
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
8 files changed