Put the necessary plumbing in place to notify of size change of the
video in TvView.
Put together the track related logic in TvInputManager.Session.
Protected track information with a lock.
Also modified debugging messages more consistently and fixed minor
warnings in TvView.
Bug: 17635300
Change-Id: I8d267d8a11056b5ccee1dacbf2d3391be16f811e
6320fc490f