remove breakText, and all utf cache accessors

Bug: skia:
Change-Id: Ib7219e0844a4401f12f89d91eab60dbb7dda0121
Reviewed-on: https://skia-review.googlesource.com/c/188580
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Auto-Submit: Mike Reed <reed@google.com>
11 files changed