Use MakeForShader/ColorFilter in runtime effect tests

Bug: skia:11813
Change-Id: I9748a2806fe4636111fbb5740a3ebdb0814cfc35
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/401018
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2 files changed