cubicmap should pin its input -- I guess

Bug: skia:
Change-Id: I9abf6deb26f702186c6468cb20d0ec79d9bcab8a
Reviewed-on: https://skia-review.googlesource.com/c/170882
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed