use drawstring with font

Bug: skia:
Change-Id: I102f424b0f2beaf2ec5bef0fcdc0352f5766f490
Reviewed-on: https://skia-review.googlesource.com/c/181563
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Auto-Submit: Mike Reed <reed@google.com>
14 files changed