Revert "Rearrange SkSL pre-include modules to hide things"

This reverts commit bea0dc67f47c4d5f52e2f25d4a03c9e7cbbda190.

No-Try: true
Change-Id: I7b000de199dc23bd3719a4ee835b2a8d3c93fefd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/332747
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
10 files changed