Switch SPIRV-Cross to use third_party GN template

Suppresses all warnings (nonportable include paths, etc.)

Change-Id: Ic1bbf2496a2fe259d5e7a9537e1d89ec74a99add
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/271857
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
1 file changed