am dc1c291a: Merge "Delete auxiliary action button in call button fragment." into lmp-dev

* commit 'dc1c291ab46388e6c1b5ff284cbddbc20544dd8b':
  Delete auxiliary action button in call button fragment.
tree: bc4f95a75e30638a87642b4a5051ed15c1b2b51a
  1. InCallUI/