[graphite] Reduce maintainance issues wrt SkPaintParamKey dumping

Bug: skia:12701
Change-Id: I75afb5115743f59b0626d43c6ada4f5a3813422f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/494137
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
3 files changed