start to use SkFont api (paint's equivalents are deprecated)

TBR=cjgrant

Bug: skia:2664
Change-Id: Ie2b941409bcd84d61c3bdad22d57f45c7089af70
Reviewed-on: https://chromium-review.googlesource.com/c/1306513
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Dominik Röttsches <drott@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Cr-Commit-Position: refs/heads/master@{#605322}
10 files changed