Fix windows DLL builds with shaper included

Change-Id: I7adc1e01f4f9cec56e53e620ba4d04eae61f0b9e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/254899
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
16 files changed