SkSL now detects modifiers used in incorrect contexts

Change-Id: I3847a17450c3185284961f35064c4f225aeb8b61
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/308769
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: Ethan Nicholas <ethannicholas@google.com>
5 files changed