Fix b/5510870 by saving/restoring Activity states.

1. Filters implement Parcelable for saving/restoring states.
2. Extract Doodle for making doodling paths parcelable.

Change-Id: Ice8e6e068891da8a8f9251e62d95ea755fa99933
42 files changed
tree: d3984b476c56049afd695a25dae79397ad48ce00
  1. gallerycommon/
  2. src/
  3. src_pd/
  4. tests/