[skottie-wasm-perf] Don't redraw unchanged frames

Bug: skia:9267
Change-Id: Ib10a0fd5829e61692b71e8d78c7ebee5a19a0a65
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/229013
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
1 file changed