[skottie] Cleanup: convert shape stroke/fill to new adapter pattern

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Change-Id: If4b9e591fdd4349b6a06ce86ba5284ab43634a03
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/267447
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
8 files changed