polish up gm/hsl.cpp

   - remove broken clip_color_KHR().
   - rearrange a little to match spec closer
   - remove some TODOs

Change-Id: I2de6aa3138455d5970e2cda74f5da6ffadc3db56
Reviewed-on: https://skia-review.googlesource.com/15681
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
1 file changed