Show error dialog and end call for service not supported error

Add another condition for which InCallActivity is launched so that
it can disconnect the call and show the error dialog.

Slight refactor of code that checks if a call has valid accounts so
that it can be shared.

Bug: 18781230
Change-Id: I83a9c4ee30f2a80168f3244f4929f70aa46b9d83
2 files changed
tree: 7520b8ccd3432aeb511f76fd9a98fe14a422c936
  1. InCallUI/