* Adds the new route type LIVE_VIDEO
* Wireless displays support both LIVE_VIDEO and LIVE_AUDIO, making
wireless display routes valid selections in when apps make selecting
live audio routes available.
* MediaRouter will only report/manipulate wireless displays that have
already been paired at the system level.
Bug 7177920
Change-Id: Ic221b8687d77b4c0df9801c396b74870e86206e9