Add Type::isArray and Type::isStruct helper methods.

These methods improve readability for simple, commonly-performed type
checks.

We already had a (very rarely-used) helper function `isArrayed` which
was only applicable to texture and sampler types. To avoid potential
confusion, this has been renamed to `isArrayedTexture`.

Change-Id: Ibec9d872ff3b415964b842c96ddc1b5b271ac883
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/340720
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
14 files changed