[canvaskit] Add requestAnimationFrame to SkSurface

Bug: skia:
Change-Id: I8a15c10d0d8f20098d0e5357ffd602db97c50c84
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/201986
Reviewed-by: Mike Reed <reed@google.com>
6 files changed