SkSL is now pickier about type conversions

Bug: skia:
Change-Id: I4e8b8f229f4e4344f160b0dbb41832764d0b75bd
Reviewed-on: https://skia-review.googlesource.com/c/188311
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
81 files changed