This relands commit 4d6d9e3f89.
Original change's description:
> [skottie] Max lines text auto-sizing constraint
>
> Introduce a new text property ("xl"), to limit the number of lines when
> auto-sizing.
>
> This is a Skottie extension, pending UI/controls in Bodymovin.
>
> Change-Id: Id0f1e633e1b324a97b227d6b187cd540990796a7
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/518498
> Reviewed-by: Ben Wagner <bungeman@google.com>
> Reviewed-by: Jorge Betancourt <jmbetancourt@google.com>
> Commit-Queue: Florin Malita <fmalita@google.com>
Change-Id: Ib9d28366332866d8b787f89fa1dc13132c02b435
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/518699
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
762f8fbcad