Move label fetch logic into common utility class.

- Move logic from PhoneActionInflater and PhoneActionAltInflater into common
  utility method so it can be shared by PhoneNumberInteraction without going
  through account manager.
- Added unit tests.

Bug: 6993891
Change-Id: I53e74df02bea031886ee512360b9f1abc083d66c
2 files changed
tree: 7e2d8c248bedd2af748a787fff7b18e43e1d97ee
  1. src/
  2. TestCommon/
  3. tests/