Support carrier presence-based video calling icon.

- Update SmartDial database to track carrier presence.
- Add video call style elements to dialer stylesheet.
- Tore out hair in frustration tracing through code.
- Add listeners to allow dialing of video calls from search results.

Bug: 20257833
Change-Id: I476cccb8c2805ae6f9949366fc5c2ce2669b7734