[skottie] Misc cleanup

  * pass inline defaults
  * log expressions

TBR=
Change-Id: I5e3ab038d612c738abb1bcf35b4cc492b9aaa6c1
Reviewed-on: https://skia-review.googlesource.com/140240
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
2 files changed