Replace SkColor with SkColor4f in layer draw looper

Change-Id: I0eff3fd535472b97a9192de6ea87c2fab1d67568
Reviewed-on: https://skia-review.googlesource.com/151520
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
1 file changed