Switched SkSL parser APIs from char* + length to string_view

Change-Id: I9f4378b622699d80bef449f9857117e9cc437956
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/418140
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
10 files changed