flag to convert to SkTextEncoding

Bug: skia:
Change-Id: I9628bcabc5c6f902b79009e4f21badff3e8cca94
Reviewed-on: https://skia-review.googlesource.com/c/173980
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>
41 files changed