The blend/compose shader's dump method will need to recursively call SkPaintParamsKey::DumpBlock
Bug: skia:12701
Change-Id: Iab7c26bf5410c2429e4932859b91d741caeed4b5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/496311
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>