use font instead of paint

Bug: skia:
Change-Id: I653de31a22545cd78fba7e4aa7b7f85b6057a8e0
Reviewed-on: https://skia-review.googlesource.com/c/179984
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Auto-Submit: Mike Reed <reed@google.com>
7 files changed