refactor paragraph samples

Change-Id: Ibcd93ccd2eef17728b0d2f0fb9f55b91cda93f3a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/229282
Reviewed-by: Julia Lavrova <jlavrova@google.com>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed