Roll HarfBuzz from 49c52fa9 to f94508ed (171 commits)

https://chromium.googlesource.com/external/github.com/harfbuzz/harfbuzz.git/+log/49c52fa95316042390bc07bc9fe9438b63cd3320..f94508edd60e26a015586c37c29104d6bdc26462

Change-Id: I9a333a5c960f21659b66b79b9cb15b45c82f78e2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/726459
Auto-Submit: Ben Wagner <bungeman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2 files changed