Separate SkUnicode bazel source sets

Change-Id: I45cdf0e063ad7f2c21922f6d2fe156ef512ff72d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/436569
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
1 file changed