commit da858bfcfacd749517324cdc8e48f7a7e8b4e240
author Ben Kwa <kenobi@google.com> Wed Dec 09 14:33:49 2015 -0800
committer Ben Kwa <kenobi@google.com> Mon Dec 14 11:47:27 2015 -0800
tree 2c60e4059529e83ec2869669b497330f895bafd6
parent d72a1daea7b7fd718985345a624ed749aa416f9e

Fix file deletion after the move to Model IDs.

- Add methods to the DocumentsAdatper to hide and unhide files.  This
  removes that burden from the Model.

- Remove clunky markForDeletion/finalizeDeletion and all related code
  from the Model.  Replace with a straight-up delete method.

- Modify deletion code in the DirectoryFragment.  Deletion now looks
  like:
  - user presses delete
  - DocumentsAdapter hides the deleted files
  - If the user presses cancel, the DocumentsAdapter unhides the files.
  - If the user doesn't cancel, Model.delete is called to delete the
    files.

- Fix deletion-related Model tests.

BUG=26024369

Change-Id: I02e2131c1aff1ebcd0bdb93d374675fd157d7f51