expand flag to include all text-related paint fields

Bug: skia:
Change-Id: I8453a6d607df4902cd05c5c9bc6162feda04ef9c
Reviewed-on: https://skia-review.googlesource.com/c/182969
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Auto-Submit: Mike Reed <reed@google.com>
19 files changed