- Add UpdateManager - responsible for the update logic.
Now ui.MainActivity is responsible for only UI.
- Create sample test for UpdateManager
- Remove MainActivityTest - now MainActivity is really simple.
- Add separate callback for progress update.
- MainActivity: UpdateEngine#bind/unbind on pause/resume.
Test: manually on the device
Test: using JUnit4
Change-Id: I1dba7c4ec74b1afb520be762413cfc261ccfbc08
Signed-off-by: Zhomart Mukhamejanov <zhomart@google.com>