Sets a few button to invisible by default.

- When user rejects an incoming call, the buttons wouldn't get
  initialized to be visible or invisible because the call state never
  gets to be processed.

- A few non-essential buttons (add call/swap call/merge call) are
  therefore defaulted to be inivisible.

Bug: 11028671
Change-Id: Ia2b800a80b83bd8212bef67834c9f5214e3090b5
1 file changed
tree: 87bb97122aa6037c1e90c21c035353d67008255c
  1. InCallUI/