make color rotating a little less pointlessly slow

Change-Id: Ic9e6cfe82dd22ac01be7a51724efa4c00399cfef
Reviewed-on: https://skia-review.googlesource.com/65320
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
1 file changed