use SkFont for measuring and paths

Bug: skia:
Change-Id: I1810edfef6e04be0380bac0eeab5450fe302e078
Reviewed-on: https://skia-review.googlesource.com/c/179728
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
3 files changed