Add test containing anonymous function parameters.

SkSL will reject ES2-compatible code because function parameters always
require a name in SkSL. (A followup CL relaxes this restriction and
allows anonymous parameters in SkSL.)

Change-Id: Ifdcf0fcbe0f52d16007c018b545631ca4033a8c4
Bug: skia:12769
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/489537
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
5 files changed