1c0a20aeeb
A very simple application: one activity, with a few bits of persistent data that are updated live by the activity. To that are added a few alternative agent implementations, to illustrate various approaches and tradeoffs when implementing a backup/restore agent. In particular, there are example agents that do everything "by hand," either record-by-record or by directly backing up the app's entire persistent data file; plus an example agent that illustrates how very easy it is to implement the latter using the OS-provided helpers. Part of bug #2545514 Change-Id: Iaca33a5113406360c23d6e2e59eb012f9f1e9400