SkShaper: enable for unit and render tests

New tests that use skshaper should hide behind SK_USING_SKSHAPER define.

Change-Id: Ifcd726d931e3eb1ff209085a63e8129c9cd5596d
Reviewed-on: https://skia-review.googlesource.com/c/192026
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
3 files changed