53f09ee1f1
Bug: 73529437 Test: No change in behavior, no new tests Document that it can be inflated from xml, and reference the attributes that it supports. Add a comment describing what the class does with respect to animation. Update the comment for start() to better reflect when the callback is called. Change-Id: I660cbc4e185dca8bc7a43a185f91ae0485ef8753