Shaper Tests: make a macro, rename test resources.

Change-Id: Ic7bfd4784d9b2031fdcbf57e730b8c738b9ac9d3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211990
Auto-Submit: Hal Canary <halcanary@google.com>
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Herb Derby <herb@google.com>
2 files changed