SKIA_IMPLEMENTATION is only relevant in shared builds

Change-Id: If4ce780a74d59e5ec5c9d950a560527d4de7e030
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/210130
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2 files changed