Show correct call buttons depending on voice/video call.

Behaviors to be implemented in separate changelist.

Renamed some of the methods to reference buttons, and rearranged the
order in which buttons are listed and dealt with to be more
consistent with the order in the layout.

Bug: 16014280
Change-Id: I40a9137d222daf6959a869c11e6ac763baa61788
5 files changed
tree: ea1d779dba57c0abf25c8b3e03933e3a56e6c56a
  1. InCallUI/