Use constexpr arrays to list the built-in types.

This is a step towards a followup CL which adds the private types to the
root symbol table.

Change-Id: Ieab35154aa48949fb83ea6631057c3593127bd3d
Bug: skia:12538
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/458977
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
1 file changed