drawText Cleanup, part 3

Change-Id: I17bdc317b2f22bb3d4c33785aa2163e8beb3b280
Reviewed-on: https://skia-review.googlesource.com/c/182201
Auto-Submit: Hal Canary <halcanary@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>
7 files changed