Make SwipeRefreshLayout play nice with AppBarLayout

It currently does not act as a NestedScrollingChild,
meaning that any events it recieves are not dispatched
up to it's parent. This CL makes SwipeRefreshLayout
act as a child, dispatching events up as necessary.

Change-Id: Ie4fb5e7c5d648e96e8bcb1ef9cd093ffa231bd52
2 files changed