Add nbsp info to the cache

Change-Id: I9d4cd6f3d7c2871c1279c3a7190187bbfee1b56b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/383856
Commit-Queue: Julia Lavrova <jlavrova@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
9 files changed