Breaking functionality into separate steps

First try, all tests work.

Change-Id: Ifb1b102b3fc45d714d706e9c123d3ca0aeafd600
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/415156
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Julia Lavrova <jlavrova@google.com>
23 files changed