Add Skottie support to Fiddle

Change-Id: I2d89c1340215b43476337c354057328c1bb2b8ff
Reviewed-on: https://skia-review.googlesource.com/130720
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Klein <mtklein@google.com>
2 files changed