more powerful map()

Change-Id: Icbae002999a295e3a9d1d2e6046e686784d5f608
Reviewed-on: https://skia-review.googlesource.com/69901
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
1 file changed