Migrate ChooseAccountFragment to PreferenceFragment

- Renamed ChooseAccountFragment to AddAccountFragment
- Refactored fragment to use Preference Controller framework
- Added tests

Fixes: 117336187
Test: Tested on device
Test: Existing and new Robolectric tests pass
Change-Id: I92508b5261ac0eb1556be73b8919e24ce9f9cd3f
12 files changed
tree: 77526c546ee68b41be9c8040d2b6ded70f6e754b
  1. res/
  2. src/
  3. tests/
  4. Android.mk
  5. AndroidManifest.xml
  6. PREUPLOAD.cfg